diff --git a/dist/esm/popper-utils.js b/dist/esm/popper-utils.js
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+/**!
+ * @fileOverview Kickass library to create and place poppers near their reference elements.
+ * @version 1.12.9
+ * @license
+ * Copyright (c) 2016 Federico Zivolo and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+/**
+ * Get CSS computed property of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Eement} element
+ * @argument {String} property
+ */
+function getStyleComputedProperty(element, property) {
+  if (element.nodeType !== 1) {
+    return [];
+  }
+  // NOTE: 1 DOM access here
+  var css = getComputedStyle(element, null);
+  return property ? css[property] : css;
+}
+
+/**
+ * Returns the parentNode or the host of the element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} parent
+ */
+function getParentNode(element) {
+  if (element.nodeName === 'HTML') {
+    return element;
+  }
+  return element.parentNode || element.host;
+}
+
+/**
+ * Returns the scrolling parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} scroll parent
+ */
+function getScrollParent(element) {
+  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
+  if (!element) {
+    return document.body;
+  }
+
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
+  // Firefox want us to check `-x` and `-y` variations as well
+
+  var _getStyleComputedProp = getStyleComputedProperty(element),
+      overflow = _getStyleComputedProp.overflow,
+      overflowX = _getStyleComputedProp.overflowX,
+      overflowY = _getStyleComputedProp.overflowY;
+
+  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
+    return element;
+  }
+
+  return getScrollParent(getParentNode(element));
+}
+
+/**
+ * Returns the offset parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} offset parent
+ */
+function getOffsetParent(element) {
+  // NOTE: 1 DOM access here
+  var offsetParent = element && element.offsetParent;
+  var nodeName = offsetParent && offsetParent.nodeName;
+
+  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
+    return document.documentElement;
+  }
+
+  // .offsetParent will return the closest TD or TABLE in case
+  // no offsetParent is present, I hate this job...
+  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+    return getOffsetParent(offsetParent);
+  }
+
+  return offsetParent;
+}
+
+function isOffsetContainer(element) {
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY') {
+    return false;
+  }
+  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
+}
+
+/**
+ * Finds the root node (document, shadowDOM root) of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} node
+ * @returns {Element} root node
+ */
+function getRoot(node) {
+  if (node.parentNode !== null) {
+    return getRoot(node.parentNode);
+  }
+
+  return node;
+}
+
+/**
+ * Finds the offset parent common to the two provided nodes
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element1
+ * @argument {Element} element2
+ * @returns {Element} common offset parent
+ */
+function findCommonOffsetParent(element1, element2) {
+  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
+  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
+    return document.documentElement;
+  }
+
+  // Here we make sure to give as "start" the element that comes first in the DOM
+  var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
+  var start = order ? element1 : element2;
+  var end = order ? element2 : element1;
+
+  // Get common ancestor container
+  var range = document.createRange();
+  range.setStart(start, 0);
+  range.setEnd(end, 0);
+  var commonAncestorContainer = range.commonAncestorContainer;
+
+  // Both nodes are inside #document
+
+  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
+    if (isOffsetContainer(commonAncestorContainer)) {
+      return commonAncestorContainer;
+    }
+
+    return getOffsetParent(commonAncestorContainer);
+  }
+
+  // one of the nodes is inside shadowDOM, find which one
+  var element1root = getRoot(element1);
+  if (element1root.host) {
+    return findCommonOffsetParent(element1root.host, element2);
+  } else {
+    return findCommonOffsetParent(element1, getRoot(element2).host);
+  }
+}
+
+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+function getScroll(element) {
+  var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
+
+  var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    var html = element.ownerDocument.documentElement;
+    var scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}
+
+/*
+ * Sum or subtract the element scroll values (left and top) from a given rect object
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} rect - Rect object you want to change
+ * @param {HTMLElement} element - The element from the function reads the scroll values
+ * @param {Boolean} subtract - set to true if you want to subtract the scroll values
+ * @return {Object} rect - The modifier rect object
+ */
+function includeScroll(rect, element) {
+  var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
+
+  var scrollTop = getScroll(element, 'top');
+  var scrollLeft = getScroll(element, 'left');
+  var modifier = subtract ? -1 : 1;
+  rect.top += scrollTop * modifier;
+  rect.bottom += scrollTop * modifier;
+  rect.left += scrollLeft * modifier;
+  rect.right += scrollLeft * modifier;
+  return rect;
+}
+
+/*
+ * Helper to detect borders of a given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {CSSStyleDeclaration} styles
+ * Result of `getStyleComputedProperty` on the given element
+ * @param {String} axis - `x` or `y`
+ * @return {number} borders - The borders size of the given axis
+ */
+
+function getBordersSize(styles, axis) {
+  var sideA = axis === 'x' ? 'Left' : 'Top';
+  var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
+
+  return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
+}
+
+/**
+ * Tells if you are running Internet Explorer 10
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean} isIE10
+ */
+var isIE10 = undefined;
+
+var isIE10$1 = function () {
+  if (isIE10 === undefined) {
+    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
+  }
+  return isIE10;
+};
+
+function getSize(axis, body, html, computedStyle) {
+  return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0);
+}
+
+function getWindowSizes() {
+  var body = document.body;
+  var html = document.documentElement;
+  var computedStyle = isIE10$1() && getComputedStyle(html);
+
+  return {
+    height: getSize('Height', body, html, computedStyle),
+    width: getSize('Width', body, html, computedStyle)
+  };
+}
+
+var _extends = Object.assign || function (target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+
+  return target;
+};
+
+/**
+ * Given element offsets, generate an output similar to getBoundingClientRect
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} offsets
+ * @returns {Object} ClientRect like output
+ */
+function getClientRect(offsets) {
+  return _extends({}, offsets, {
+    right: offsets.left + offsets.width,
+    bottom: offsets.top + offsets.height
+  });
+}
+
+/**
+ * Get bounding client rect of given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} element
+ * @return {Object} client rect
+ */
+function getBoundingClientRect(element) {
+  var rect = {};
+
+  // IE10 10 FIX: Please, don't ask, the element isn't
+  // considered in DOM in some circumstances...
+  // This isn't reproducible in IE10 compatibility mode of IE11
+  if (isIE10$1()) {
+    try {
+      rect = element.getBoundingClientRect();
+      var scrollTop = getScroll(element, 'top');
+      var scrollLeft = getScroll(element, 'left');
+      rect.top += scrollTop;
+      rect.left += scrollLeft;
+      rect.bottom += scrollTop;
+      rect.right += scrollLeft;
+    } catch (err) {}
+  } else {
+    rect = element.getBoundingClientRect();
+  }
+
+  var result = {
+    left: rect.left,
+    top: rect.top,
+    width: rect.right - rect.left,
+    height: rect.bottom - rect.top
+  };
+
+  // subtract scrollbar size from sizes
+  var sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
+  var width = sizes.width || element.clientWidth || result.right - result.left;
+  var height = sizes.height || element.clientHeight || result.bottom - result.top;
+
+  var horizScrollbar = element.offsetWidth - width;
+  var vertScrollbar = element.offsetHeight - height;
+
+  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
+  // we make this check conditional for performance reasons
+  if (horizScrollbar || vertScrollbar) {
+    var styles = getStyleComputedProperty(element);
+    horizScrollbar -= getBordersSize(styles, 'x');
+    vertScrollbar -= getBordersSize(styles, 'y');
+
+    result.width -= horizScrollbar;
+    result.height -= vertScrollbar;
+  }
+
+  return getClientRect(result);
+}
+
+function getOffsetRectRelativeToArbitraryNode(children, parent) {
+  var isIE10 = isIE10$1();
+  var isHTML = parent.nodeName === 'HTML';
+  var childrenRect = getBoundingClientRect(children);
+  var parentRect = getBoundingClientRect(parent);
+  var scrollParent = getScrollParent(children);
+
+  var styles = getStyleComputedProperty(parent);
+  var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
+  var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
+
+  var offsets = getClientRect({
+    top: childrenRect.top - parentRect.top - borderTopWidth,
+    left: childrenRect.left - parentRect.left - borderLeftWidth,
+    width: childrenRect.width,
+    height: childrenRect.height
+  });
+  offsets.marginTop = 0;
+  offsets.marginLeft = 0;
+
+  // Subtract margins of documentElement in case it's being used as parent
+  // we do this only on HTML because it's the only element that behaves
+  // differently when margins are applied to it. The margins are included in
+  // the box of the documentElement, in the other cases not.
+  if (!isIE10 && isHTML) {
+    var marginTop = parseFloat(styles.marginTop, 10);
+    var marginLeft = parseFloat(styles.marginLeft, 10);
+
+    offsets.top -= borderTopWidth - marginTop;
+    offsets.bottom -= borderTopWidth - marginTop;
+    offsets.left -= borderLeftWidth - marginLeft;
+    offsets.right -= borderLeftWidth - marginLeft;
+
+    // Attach marginTop and marginLeft because in some circumstances we may need them
+    offsets.marginTop = marginTop;
+    offsets.marginLeft = marginLeft;
+  }
+
+  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
+    offsets = includeScroll(offsets, parent);
+  }
+
+  return offsets;
+}
+
+function getViewportOffsetRectRelativeToArtbitraryNode(element) {
+  var html = element.ownerDocument.documentElement;
+  var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
+  var width = Math.max(html.clientWidth, window.innerWidth || 0);
+  var height = Math.max(html.clientHeight, window.innerHeight || 0);
+
+  var scrollTop = getScroll(html);
+  var scrollLeft = getScroll(html, 'left');
+
+  var offset = {
+    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
+    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
+    width: width,
+    height: height
+  };
+
+  return getClientRect(offset);
+}
+
+/**
+ * Check if the given element is fixed or is inside a fixed parent
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {Element} customContainer
+ * @returns {Boolean} answer to "isFixed?"
+ */
+function isFixed(element) {
+  var nodeName = element.nodeName;
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    return false;
+  }
+  if (getStyleComputedProperty(element, 'position') === 'fixed') {
+    return true;
+  }
+  return isFixed(getParentNode(element));
+}
+
+/**
+ * Computed the boundaries limits and return them
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} popper
+ * @param {HTMLElement} reference
+ * @param {number} padding
+ * @param {HTMLElement} boundariesElement - Element used to define the boundaries
+ * @returns {Object} Coordinates of the boundaries
+ */
+function getBoundaries(popper, reference, padding, boundariesElement) {
+  // NOTE: 1 DOM access here
+  var boundaries = { top: 0, left: 0 };
+  var offsetParent = findCommonOffsetParent(popper, reference);
+
+  // Handle viewport case
+  if (boundariesElement === 'viewport') {
+    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
+  } else {
+    // Handle other cases based on DOM element used as boundaries
+    var boundariesNode = void 0;
+    if (boundariesElement === 'scrollParent') {
+      boundariesNode = getScrollParent(getParentNode(reference));
+      if (boundariesNode.nodeName === 'BODY') {
+        boundariesNode = popper.ownerDocument.documentElement;
+      }
+    } else if (boundariesElement === 'window') {
+      boundariesNode = popper.ownerDocument.documentElement;
+    } else {
+      boundariesNode = boundariesElement;
+    }
+
+    var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
+
+    // In case of HTML, we need a different computation
+    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
+      var _getWindowSizes = getWindowSizes(),
+          height = _getWindowSizes.height,
+          width = _getWindowSizes.width;
+
+      boundaries.top += offsets.top - offsets.marginTop;
+      boundaries.bottom = height + offsets.top;
+      boundaries.left += offsets.left - offsets.marginLeft;
+      boundaries.right = width + offsets.left;
+    } else {
+      // for all the other DOM elements, this one is good
+      boundaries = offsets;
+    }
+  }
+
+  // Add paddings
+  boundaries.left += padding;
+  boundaries.top += padding;
+  boundaries.right -= padding;
+  boundaries.bottom -= padding;
+
+  return boundaries;
+}
+
+function getArea(_ref) {
+  var width = _ref.width,
+      height = _ref.height;
+
+  return width * height;
+}
+
+/**
+ * Utility used to transform the `auto` placement to the placement with more
+ * available space.
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
+  var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
+
+  if (placement.indexOf('auto') === -1) {
+    return placement;
+  }
+
+  var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
+
+  var rects = {
+    top: {
+      width: boundaries.width,
+      height: refRect.top - boundaries.top
+    },
+    right: {
+      width: boundaries.right - refRect.right,
+      height: boundaries.height
+    },
+    bottom: {
+      width: boundaries.width,
+      height: boundaries.bottom - refRect.bottom
+    },
+    left: {
+      width: refRect.left - boundaries.left,
+      height: boundaries.height
+    }
+  };
+
+  var sortedAreas = Object.keys(rects).map(function (key) {
+    return _extends({
+      key: key
+    }, rects[key], {
+      area: getArea(rects[key])
+    });
+  }).sort(function (a, b) {
+    return b.area - a.area;
+  });
+
+  var filteredAreas = sortedAreas.filter(function (_ref2) {
+    var width = _ref2.width,
+        height = _ref2.height;
+    return width >= popper.clientWidth && height >= popper.clientHeight;
+  });
+
+  var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
+
+  var variation = placement.split('-')[1];
+
+  return computedPlacement + (variation ? '-' + variation : '');
+}
+
+var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
+var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
+var timeoutDuration = 0;
+for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
+  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
+    timeoutDuration = 1;
+    break;
+  }
+}
+
+function microtaskDebounce(fn) {
+  var called = false;
+  return function () {
+    if (called) {
+      return;
+    }
+    called = true;
+    window.Promise.resolve().then(function () {
+      called = false;
+      fn();
+    });
+  };
+}
+
+function taskDebounce(fn) {
+  var scheduled = false;
+  return function () {
+    if (!scheduled) {
+      scheduled = true;
+      setTimeout(function () {
+        scheduled = false;
+        fn();
+      }, timeoutDuration);
+    }
+  };
+}
+
+var supportsMicroTasks = isBrowser && window.Promise;
+
+/**
+* Create a debounced version of a method, that's asynchronously deferred
+* but called in the minimum time possible.
+*
+* @method
+* @memberof Popper.Utils
+* @argument {Function} fn
+* @returns {Function}
+*/
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
+
+/**
+ * Mimics the `find` method of Array
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function find(arr, check) {
+  // use native find if supported
+  if (Array.prototype.find) {
+    return arr.find(check);
+  }
+
+  // use `filter` to obtain the same behavior of `find`
+  return arr.filter(check)[0];
+}
+
+/**
+ * Return the index of the matching object
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function findIndex(arr, prop, value) {
+  // use native findIndex if supported
+  if (Array.prototype.findIndex) {
+    return arr.findIndex(function (cur) {
+      return cur[prop] === value;
+    });
+  }
+
+  // use `find` + `indexOf` if `findIndex` isn't supported
+  var match = find(arr, function (obj) {
+    return obj[prop] === value;
+  });
+  return arr.indexOf(match);
+}
+
+/**
+ * Get the position of the given element, relative to its offset parent
+ * @method
+ * @memberof Popper.Utils
+ * @param {Element} element
+ * @return {Object} position - Coordinates of the element and its `scrollTop`
+ */
+function getOffsetRect(element) {
+  var elementRect = void 0;
+  if (element.nodeName === 'HTML') {
+    var _getWindowSizes = getWindowSizes(),
+        width = _getWindowSizes.width,
+        height = _getWindowSizes.height;
+
+    elementRect = {
+      width: width,
+      height: height,
+      left: 0,
+      top: 0
+    };
+  } else {
+    elementRect = {
+      width: element.offsetWidth,
+      height: element.offsetHeight,
+      left: element.offsetLeft,
+      top: element.offsetTop
+    };
+  }
+
+  // position
+  return getClientRect(elementRect);
+}
+
+/**
+ * Get the outer sizes of the given element (offset size + margins)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Object} object containing width and height properties
+ */
+function getOuterSizes(element) {
+  var styles = getComputedStyle(element);
+  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
+  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  var result = {
+    width: element.offsetWidth + y,
+    height: element.offsetHeight + x
+  };
+  return result;
+}
+
+/**
+ * Get the opposite placement of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement
+ * @returns {String} flipped placement
+ */
+function getOppositePlacement(placement) {
+  var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash[matched];
+  });
+}
+
+/**
+ * Get offsets to the popper
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} position - CSS position the Popper will get applied
+ * @param {HTMLElement} popper - the popper element
+ * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
+ * @param {String} placement - one of the valid placement options
+ * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
+ */
+function getPopperOffsets(popper, referenceOffsets, placement) {
+  placement = placement.split('-')[0];
+
+  // Get popper node sizes
+  var popperRect = getOuterSizes(popper);
+
+  // Add position, width and height to our offsets object
+  var popperOffsets = {
+    width: popperRect.width,
+    height: popperRect.height
+  };
+
+  // depending by the popper placement we have to compute its offsets slightly differently
+  var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
+  var mainSide = isHoriz ? 'top' : 'left';
+  var secondarySide = isHoriz ? 'left' : 'top';
+  var measurement = isHoriz ? 'height' : 'width';
+  var secondaryMeasurement = !isHoriz ? 'height' : 'width';
+
+  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
+  if (placement === secondarySide) {
+    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
+  } else {
+    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
+  }
+
+  return popperOffsets;
+}
+
+/**
+ * Get offsets to the reference element
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} state
+ * @param {Element} popper - the popper element
+ * @param {Element} reference - the reference element (the popper will be relative to this)
+ * @returns {Object} An object containing the offsets which will be applied to the popper
+ */
+function getReferenceOffsets(state, popper, reference) {
+  var commonOffsetParent = findCommonOffsetParent(popper, reference);
+  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
+}
+
+/**
+ * Get the prefixed supported property name
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} property (camelCase)
+ * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
+ */
+function getSupportedPropertyName(property) {
+  var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
+  var upperProp = property.charAt(0).toUpperCase() + property.slice(1);
+
+  for (var i = 0; i < prefixes.length - 1; i++) {
+    var prefix = prefixes[i];
+    var toCheck = prefix ? '' + prefix + upperProp : property;
+    if (typeof document.body.style[toCheck] !== 'undefined') {
+      return toCheck;
+    }
+  }
+  return null;
+}
+
+/**
+ * Check if the given variable is a function
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Any} functionToCheck - variable to check
+ * @returns {Boolean} answer to: is a function?
+ */
+function isFunction(functionToCheck) {
+  var getType = {};
+  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+}
+
+/**
+ * Helper used to know if the given modifier is enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean}
+ */
+function isModifierEnabled(modifiers, modifierName) {
+  return modifiers.some(function (_ref) {
+    var name = _ref.name,
+        enabled = _ref.enabled;
+    return enabled && name === modifierName;
+  });
+}
+
+/**
+ * Helper used to know if the given modifier depends from another one.<br />
+ * It checks if the needed modifier is listed and enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @param {Array} modifiers - list of modifiers
+ * @param {String} requestingName - name of requesting modifier
+ * @param {String} requestedName - name of requested modifier
+ * @returns {Boolean}
+ */
+function isModifierRequired(modifiers, requestingName, requestedName) {
+  var requesting = find(modifiers, function (_ref) {
+    var name = _ref.name;
+    return name === requestingName;
+  });
+
+  var isRequired = !!requesting && modifiers.some(function (modifier) {
+    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
+  });
+
+  if (!isRequired) {
+    var _requesting = '`' + requestingName + '`';
+    var requested = '`' + requestedName + '`';
+    console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
+  }
+  return isRequired;
+}
+
+/**
+ * Tells if a given input is a number
+ * @method
+ * @memberof Popper.Utils
+ * @param {*} input to check
+ * @return {Boolean}
+ */
+function isNumeric(n) {
+  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
+}
+
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  var ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
+/**
+ * Remove event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function removeEventListeners(reference, state) {
+  // Remove resize event listener on window
+  getWindow(reference).removeEventListener('resize', state.updateBound);
+
+  // Remove scroll event listener on scroll parents
+  state.scrollParents.forEach(function (target) {
+    target.removeEventListener('scroll', state.updateBound);
+  });
+
+  // Reset state
+  state.updateBound = null;
+  state.scrollParents = [];
+  state.scrollElement = null;
+  state.eventsEnabled = false;
+  return state;
+}
+
+/**
+ * Loop trough the list of modifiers and run them in order,
+ * each of them will then edit the data object.
+ * @method
+ * @memberof Popper.Utils
+ * @param {dataObject} data
+ * @param {Array} modifiers
+ * @param {String} ends - Optional modifier name used as stopper
+ * @returns {dataObject}
+ */
+function runModifiers(modifiers, data, ends) {
+  var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
+
+  modifiersToRun.forEach(function (modifier) {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
+      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
+    }
+    var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
+    if (modifier.enabled && isFunction(fn)) {
+      // Add properties to offsets to make them a complete clientRect object
+      // we do this before each modifier to make sure the previous one doesn't
+      // mess with these values
+      data.offsets.popper = getClientRect(data.offsets.popper);
+      data.offsets.reference = getClientRect(data.offsets.reference);
+
+      data = fn(data, modifier);
+    }
+  });
+
+  return data;
+}
+
+/**
+ * Set the attributes to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the attributes to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setAttributes(element, attributes) {
+  Object.keys(attributes).forEach(function (prop) {
+    var value = attributes[prop];
+    if (value !== false) {
+      element.setAttribute(prop, attributes[prop]);
+    } else {
+      element.removeAttribute(prop);
+    }
+  });
+}
+
+/**
+ * Set the style to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the style to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setStyles(element, styles) {
+  Object.keys(styles).forEach(function (prop) {
+    var unit = '';
+    // add unit if the value is numeric and is one of the following
+    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
+      unit = 'px';
+    }
+    element.style[prop] = styles[prop] + unit;
+  });
+}
+
+function attachToScrollParents(scrollParent, event, callback, scrollParents) {
+  var isBody = scrollParent.nodeName === 'BODY';
+  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
+  target.addEventListener(event, callback, { passive: true });
+
+  if (!isBody) {
+    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
+  }
+  scrollParents.push(target);
+}
+
+/**
+ * Setup needed event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function setupEventListeners(reference, options, state, updateBound) {
+  // Resize event listener on window
+  state.updateBound = updateBound;
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
+
+  // Scroll event listener on scroll parents
+  var scrollElement = getScrollParent(reference);
+  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
+  state.scrollElement = scrollElement;
+  state.eventsEnabled = true;
+
+  return state;
+}
+
+// This is here just for backward compatibility with versions lower than v1.10.3
+// you should import the utilities using named exports, if you want them all use:
+// ```
+// import * as PopperUtils from 'popper-utils';
+// ```
+// The default export will be removed in the next major version.
+var index = {
+  computeAutoPlacement: computeAutoPlacement,
+  debounce: debounce,
+  findIndex: findIndex,
+  getBordersSize: getBordersSize,
+  getBoundaries: getBoundaries,
+  getBoundingClientRect: getBoundingClientRect,
+  getClientRect: getClientRect,
+  getOffsetParent: getOffsetParent,
+  getOffsetRect: getOffsetRect,
+  getOffsetRectRelativeToArbitraryNode: getOffsetRectRelativeToArbitraryNode,
+  getOuterSizes: getOuterSizes,
+  getParentNode: getParentNode,
+  getPopperOffsets: getPopperOffsets,
+  getReferenceOffsets: getReferenceOffsets,
+  getScroll: getScroll,
+  getScrollParent: getScrollParent,
+  getStyleComputedProperty: getStyleComputedProperty,
+  getSupportedPropertyName: getSupportedPropertyName,
+  getWindowSizes: getWindowSizes,
+  isFixed: isFixed,
+  isFunction: isFunction,
+  isModifierEnabled: isModifierEnabled,
+  isModifierRequired: isModifierRequired,
+  isNumeric: isNumeric,
+  removeEventListeners: removeEventListeners,
+  runModifiers: runModifiers,
+  setAttributes: setAttributes,
+  setStyles: setStyles,
+  setupEventListeners: setupEventListeners
+};
+
+export { computeAutoPlacement, debounce, findIndex, getBordersSize, getBoundaries, getBoundingClientRect, getClientRect, getOffsetParent, getOffsetRect, getOffsetRectRelativeToArbitraryNode, getOuterSizes, getParentNode, getPopperOffsets, getReferenceOffsets, getScroll, getScrollParent, getStyleComputedProperty, getSupportedPropertyName, getWindowSizes, isFixed, isFunction, isModifierEnabled, isModifierRequired, isNumeric, removeEventListeners, runModifiers, setAttributes, setStyles, setupEventListeners };
+export default index;
+//# sourceMappingURL=popper-utils.js.map
diff --git a/dist/esm/popper-utils.js.map b/dist/esm/popper-utils.js.map
new file mode 100644
index 0000000..8d2f085
--- /dev/null
+++ b/dist/esm/popper-utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-utils.js","sources":["../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/isIE10.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/debounce.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/getOffsetRect.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getSupportedPropertyName.js","../../src/utils/isFunction.js","../../src/utils/isModifierEnabled.js","../../src/utils/isModifierRequired.js","../../src/utils/isNumeric.js","../../src/utils/getWindow.js","../../src/utils/removeEventListeners.js","../../src/utils/runModifiers.js","../../src/utils/setAttributes.js","../../src/utils/setStyles.js","../../src/utils/setupEventListeners.js","../../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n  let elementRect;\n  if (element.nodeName === 'HTML') {\n    const { width, height } = getWindowSizes();\n    elementRect = {\n      width,\n      height,\n      left: 0,\n      top: 0,\n    };\n  } else {\n    elementRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight,\n      left: element.offsetLeft,\n      top: element.offsetTop,\n    };\n  }\n\n  // position\n  return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from './isModifierEnabled';\nimport isModifierRequired from './isModifierRequired';\nimport isNumeric from './isNumeric';\nimport removeEventListeners from './removeEventListeners';\nimport runModifiers from './runModifiers';\nimport setAttributes from './setAttributes';\nimport setStyles from './setStyles';\nimport setupEventListeners from './setupEventListeners';\n\n/** @namespace Popper.Utils */\nexport {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  setupEventListeners,\n};\n\n// This is here just for backward compatibility with versions lower than v1.10.3\n// you should import the utilities using named exports, if you want them all use:\n// ```\n// import * as PopperUtils from 'popper-utils';\n// ```\n// The default export will be removed in the next major version.\nexport default {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  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\ No newline at end of file
diff --git a/dist/esm/popper-utils.min.js b/dist/esm/popper-utils.min.js
new file mode 100644
index 0000000..84100d1
--- /dev/null
+++ b/dist/esm/popper-utils.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2017
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
+ */function a(a,b){if(1!==a.nodeType)return[];var c=getComputedStyle(a,null);return b?c[b]:c}function b(a){return'HTML'===a.nodeName?a:a.parentNode||a.host}function c(d){if(!d)return document.body;switch(d.nodeName){case'HTML':case'BODY':return d.ownerDocument.body;case'#document':return d.body;}var e=a(d),f=e.overflow,g=e.overflowX,h=e.overflowY;return /(auto|scroll)/.test(f+h+g)?d:c(b(d))}function d(b){var c=b&&b.offsetParent,e=c&&c.nodeName;return e&&'BODY'!==e&&'HTML'!==e?-1!==['TD','TABLE'].indexOf(c.nodeName)&&'static'===a(c,'position')?d(c):c:b?b.ownerDocument.documentElement:document.documentElement}function e(a){var b=a.nodeName;return'BODY'!==b&&('HTML'===b||d(a.firstElementChild)===a)}function f(a){return null===a.parentNode?a:f(a.parentNode)}function g(a,b){if(!a||!a.nodeType||!b||!b.nodeType)return document.documentElement;var c=a.compareDocumentPosition(b)&Node.DOCUMENT_POSITION_FOLLOWING,h=c?a:b,i=c?b:a,j=document.createRange();j.setStart(h,0),j.setEnd(i,0);var 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p=a(b);l-=k(p,'x'),n-=k(p,'y'),f.width-=l,f.height-=n}return q(f)}function s(b,d){var e=m(),f='HTML'===d.nodeName,g=r(b),h=r(d),i=c(b),k=a(d),l=parseFloat(k.borderTopWidth,10),n=parseFloat(k.borderLeftWidth,10),o=q({top:g.top-h.top-l,left:g.left-h.left-n,width:g.width,height:g.height});if(o.marginTop=0,o.marginLeft=0,!e&&f){var p=parseFloat(k.marginTop,10),s=parseFloat(k.marginLeft,10);o.top-=l-p,o.bottom-=l-p,o.left-=n-s,o.right-=n-s,o.marginTop=p,o.marginLeft=s}return(e?d.contains(i):d===i&&'BODY'!==i.nodeName)&&(o=j(o,d)),o}function t(a){var b=Math.max,c=a.ownerDocument.documentElement,d=s(a,c),e=b(c.clientWidth,window.innerWidth||0),f=b(c.clientHeight,window.innerHeight||0),g=h(c),i=h(c,'left'),j={top:g-d.top+d.marginTop,left:i-d.left+d.marginLeft,width:e,height:f};return q(j)}function u(c){var d=c.nodeName;return'BODY'===d||'HTML'===d?!1:!('fixed'!==a(c,'position'))||u(b(c))}function v(a,d,e,f){var h={top:0,left:0},i=g(a,d);if('viewport'===f)h=t(i);else{var j;'scrollParent'===f?(j=c(b(d)),'BODY'===j.nodeName&&(j=a.ownerDocument.documentElement)):'window'===f?j=a.ownerDocument.documentElement:j=f;var k=s(j,i);if('HTML'===j.nodeName&&!u(i)){var l=o(),m=l.height,n=l.width;h.top+=k.top-k.marginTop,h.bottom=m+k.top,h.left+=k.left-k.marginLeft,h.right=n+k.left}else h=k}return h.left+=e,h.top+=e,h.right-=e,h.bottom-=e,h}function w(a){var b=a.width,c=a.height;return b*c}function x(a,b,c,d,e){var f=5<arguments.length&&arguments[5]!==void 0?arguments[5]:0;if(-1===a.indexOf('auto'))return a;var g=v(c,d,f,e),h={top:{width:g.width,height:b.top-g.top},right:{width:g.right-b.right,height:g.height},bottom:{width:g.width,height:g.bottom-b.bottom},left:{width:b.left-g.left,height:g.height}},i=Object.keys(h).map(function(a){return p({key:a},h[a],{area:w(h[a])})}).sort(function(c,a){return a.area-c.area}),j=i.filter(function(a){var b=a.width,d=a.height;return b>=c.clientWidth&&d>=c.clientHeight}),k=0<j.length?j[0].key:i[0].key,l=a.split('-')[1];return k+(l?'-'+l:'')}for(var y='undefined'!=typeof window&&'undefined'!=typeof document,z=['Edge','Trident','Firefox'],A=0,B=0;B<z.length;B+=1)if(y&&0<=navigator.userAgent.indexOf(z[B])){A=1;break}function i(a){var b=!1;return function(){b||(b=!0,window.Promise.resolve().then(function(){b=!1,a()}))}}function C(a){var b=!1;return function(){b||(b=!0,setTimeout(function(){b=!1,a()},A))}}var D=y&&window.Promise,E=D?i:C;function F(a,b){return Array.prototype.find?a.find(b):a.filter(b)[0]}function G(a,b,c){if(Array.prototype.findIndex)return a.findIndex(function(a){return a[b]===c});var d=F(a,function(a){return a[b]===c});return a.indexOf(d)}function H(a){var b;if('HTML'===a.nodeName){var c=o(),d=c.width,e=c.height;b={width:d,height:e,left:0,top:0}}else b={width:a.offsetWidth,height:a.offsetHeight,left:a.offsetLeft,top:a.offsetTop};return q(b)}function I(a){var b=getComputedStyle(a),c=parseFloat(b.marginTop)+parseFloat(b.marginBottom),d=parseFloat(b.marginLeft)+parseFloat(b.marginRight),e={width:a.offsetWidth+d,height:a.offsetHeight+c};return e}function J(a){var b={left:'right',right:'left',bottom:'top',top:'bottom'};return a.replace(/left|right|bottom|top/g,function(a){return b[a]})}function K(a,b,c){c=c.split('-')[0];var d=I(a),e={width:d.width,height:d.height},f=-1!==['right','left'].indexOf(c),g=f?'top':'left',h=f?'left':'top',i=f?'height':'width',j=f?'width':'height';return e[g]=b[g]+b[i]/2-d[i]/2,e[h]=c===h?b[h]-d[j]:b[J(h)],e}function L(a,b,c){var d=g(b,c);return s(c,d)}function M(a){for(var b=[!1,'ms','Webkit','Moz','O'],c=a.charAt(0).toUpperCase()+a.slice(1),d=0;d<b.length-1;d++){var e=b[d],f=e?''+e+c:a;if('undefined'!=typeof document.body.style[f])return f}return null}function N(a){return a&&'[object Function]'==={}.toString.call(a)}function O(a,b){return a.some(function(a){var c=a.name,d=a.enabled;return d&&c===b})}function P(a,b,c){var d=F(a,function(a){var c=a.name;return c===b}),e=!!d&&a.some(function(a){return a.name===c&&a.enabled&&a.order<d.order});if(!e){var f='`'+b+'`';console.warn('`'+c+'`'+' modifier is required by '+f+' modifier in order to work, be sure to include it before '+f+'!')}return e}function Q(a){return''!==a&&!isNaN(parseFloat(a))&&isFinite(a)}function R(a){var b=a.ownerDocument;return b?b.defaultView:window}function S(a,b){return R(a).removeEventListener('resize',b.updateBound),b.scrollParents.forEach(function(a){a.removeEventListener('scroll',b.updateBound)}),b.updateBound=null,b.scrollParents=[],b.scrollElement=null,b.eventsEnabled=!1,b}function T(a,b,c){var d=void 0===c?a:a.slice(0,G(a,'name',c));return d.forEach(function(a){a['function']&&console.warn('`modifier.function` is deprecated, use `modifier.fn`!');var c=a['function']||a.fn;a.enabled&&N(c)&&(b.offsets.popper=q(b.offsets.popper),b.offsets.reference=q(b.offsets.reference),b=c(b,a))}),b}function U(a,b){Object.keys(b).forEach(function(c){var d=b[c];!1===d?a.removeAttribute(c):a.setAttribute(c,b[c])})}function V(a,b){Object.keys(b).forEach(function(c){var d='';-1!==['width','height','top','right','bottom','left'].indexOf(c)&&Q(b[c])&&(d='px'),a.style[c]=b[c]+d})}function W(a,b,d,e){var f='BODY'===a.nodeName,g=f?a.ownerDocument.defaultView:a;g.addEventListener(b,d,{passive:!0}),f||W(c(g.parentNode),b,d,e),e.push(g)}function X(a,b,d,e){d.updateBound=e,R(a).addEventListener('resize',d.updateBound,{passive:!0});var f=c(a);return W(f,'scroll',d.updateBound,d.scrollParents),d.scrollElement=f,d.eventsEnabled=!0,d}var Y={computeAutoPlacement:x,debounce:E,findIndex:G,getBordersSize:k,getBoundaries:v,getBoundingClientRect:r,getClientRect:q,getOffsetParent:d,getOffsetRect:H,getOffsetRectRelativeToArbitraryNode:s,getOuterSizes:I,getParentNode:b,getPopperOffsets:K,getReferenceOffsets:L,getScroll:h,getScrollParent:c,getStyleComputedProperty:a,getSupportedPropertyName:M,getWindowSizes:o,isFixed:u,isFunction:N,isModifierEnabled:O,isModifierRequired:P,isNumeric:Q,removeEventListeners:S,runModifiers:T,setAttributes:U,setStyles:V,setupEventListeners:X};export{x as computeAutoPlacement,E as debounce,G as findIndex,k as getBordersSize,v as getBoundaries,r as getBoundingClientRect,q as getClientRect,d as getOffsetParent,H as getOffsetRect,s as getOffsetRectRelativeToArbitraryNode,I as getOuterSizes,b as getParentNode,K as getPopperOffsets,L as getReferenceOffsets,h as getScroll,c as getScrollParent,a as getStyleComputedProperty,M as getSupportedPropertyName,o as getWindowSizes,u as isFixed,N as isFunction,O as isModifierEnabled,P as isModifierRequired,Q as isNumeric,S as removeEventListeners,T as runModifiers,U as setAttributes,V as setStyles,X as setupEventListeners};export default Y;
+//# sourceMappingURL=popper-utils.min.js.map
diff --git a/dist/esm/popper-utils.min.js.map b/dist/esm/popper-utils.min.js.map
new file mode 100644
index 0000000..ee17a13
--- /dev/null
+++ b/dist/esm/popper-utils.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-utils.min.js","sources":["../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/isIE10.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/debounce.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/getOffsetRect.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getSupportedPropertyName.js","../../src/utils/isFunction.js","../../src/utils/isModifierEnabled.js","../../src/utils/isModifierRequired.js","../../src/utils/isNumeric.js","../../src/utils/getWindow.js","../../src/utils/removeEventListeners.js","../../src/utils/runModifiers.js","../../src/utils/setAttributes.js","../../src/utils/setStyles.js","../../src/utils/setupEventListeners.js","../../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n  let elementRect;\n  if (element.nodeName === 'HTML') {\n    const { width, height } = getWindowSizes();\n    elementRect = {\n      width,\n      height,\n      left: 0,\n      top: 0,\n    };\n  } else {\n    elementRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight,\n      left: element.offsetLeft,\n      top: element.offsetTop,\n    };\n  }\n\n  // position\n  return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from 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\ No newline at end of file
diff --git a/dist/esm/popper.js b/dist/esm/popper.js
new file mode 100644
index 0000000..6c4fcfd
--- /dev/null
+++ b/dist/esm/popper.js
@@ -0,0 +1,2437 @@
+/**!
+ * @fileOverview Kickass library to create and place poppers near their reference elements.
+ * @version 1.12.9
+ * @license
+ * Copyright (c) 2016 Federico Zivolo and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
+var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
+var timeoutDuration = 0;
+for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
+  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
+    timeoutDuration = 1;
+    break;
+  }
+}
+
+function microtaskDebounce(fn) {
+  var called = false;
+  return function () {
+    if (called) {
+      return;
+    }
+    called = true;
+    window.Promise.resolve().then(function () {
+      called = false;
+      fn();
+    });
+  };
+}
+
+function taskDebounce(fn) {
+  var scheduled = false;
+  return function () {
+    if (!scheduled) {
+      scheduled = true;
+      setTimeout(function () {
+        scheduled = false;
+        fn();
+      }, timeoutDuration);
+    }
+  };
+}
+
+var supportsMicroTasks = isBrowser && window.Promise;
+
+/**
+* Create a debounced version of a method, that's asynchronously deferred
+* but called in the minimum time possible.
+*
+* @method
+* @memberof Popper.Utils
+* @argument {Function} fn
+* @returns {Function}
+*/
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
+
+/**
+ * Check if the given variable is a function
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Any} functionToCheck - variable to check
+ * @returns {Boolean} answer to: is a function?
+ */
+function isFunction(functionToCheck) {
+  var getType = {};
+  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+}
+
+/**
+ * Get CSS computed property of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Eement} element
+ * @argument {String} property
+ */
+function getStyleComputedProperty(element, property) {
+  if (element.nodeType !== 1) {
+    return [];
+  }
+  // NOTE: 1 DOM access here
+  var css = getComputedStyle(element, null);
+  return property ? css[property] : css;
+}
+
+/**
+ * Returns the parentNode or the host of the element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} parent
+ */
+function getParentNode(element) {
+  if (element.nodeName === 'HTML') {
+    return element;
+  }
+  return element.parentNode || element.host;
+}
+
+/**
+ * Returns the scrolling parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} scroll parent
+ */
+function getScrollParent(element) {
+  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
+  if (!element) {
+    return document.body;
+  }
+
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
+  // Firefox want us to check `-x` and `-y` variations as well
+
+  var _getStyleComputedProp = getStyleComputedProperty(element),
+      overflow = _getStyleComputedProp.overflow,
+      overflowX = _getStyleComputedProp.overflowX,
+      overflowY = _getStyleComputedProp.overflowY;
+
+  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
+    return element;
+  }
+
+  return getScrollParent(getParentNode(element));
+}
+
+/**
+ * Returns the offset parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} offset parent
+ */
+function getOffsetParent(element) {
+  // NOTE: 1 DOM access here
+  var offsetParent = element && element.offsetParent;
+  var nodeName = offsetParent && offsetParent.nodeName;
+
+  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
+    return document.documentElement;
+  }
+
+  // .offsetParent will return the closest TD or TABLE in case
+  // no offsetParent is present, I hate this job...
+  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+    return getOffsetParent(offsetParent);
+  }
+
+  return offsetParent;
+}
+
+function isOffsetContainer(element) {
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY') {
+    return false;
+  }
+  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
+}
+
+/**
+ * Finds the root node (document, shadowDOM root) of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} node
+ * @returns {Element} root node
+ */
+function getRoot(node) {
+  if (node.parentNode !== null) {
+    return getRoot(node.parentNode);
+  }
+
+  return node;
+}
+
+/**
+ * Finds the offset parent common to the two provided nodes
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element1
+ * @argument {Element} element2
+ * @returns {Element} common offset parent
+ */
+function findCommonOffsetParent(element1, element2) {
+  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
+  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
+    return document.documentElement;
+  }
+
+  // Here we make sure to give as "start" the element that comes first in the DOM
+  var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
+  var start = order ? element1 : element2;
+  var end = order ? element2 : element1;
+
+  // Get common ancestor container
+  var range = document.createRange();
+  range.setStart(start, 0);
+  range.setEnd(end, 0);
+  var commonAncestorContainer = range.commonAncestorContainer;
+
+  // Both nodes are inside #document
+
+  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
+    if (isOffsetContainer(commonAncestorContainer)) {
+      return commonAncestorContainer;
+    }
+
+    return getOffsetParent(commonAncestorContainer);
+  }
+
+  // one of the nodes is inside shadowDOM, find which one
+  var element1root = getRoot(element1);
+  if (element1root.host) {
+    return findCommonOffsetParent(element1root.host, element2);
+  } else {
+    return findCommonOffsetParent(element1, getRoot(element2).host);
+  }
+}
+
+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+function getScroll(element) {
+  var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
+
+  var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    var html = element.ownerDocument.documentElement;
+    var scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}
+
+/*
+ * Sum or subtract the element scroll values (left and top) from a given rect object
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} rect - Rect object you want to change
+ * @param {HTMLElement} element - The element from the function reads the scroll values
+ * @param {Boolean} subtract - set to true if you want to subtract the scroll values
+ * @return {Object} rect - The modifier rect object
+ */
+function includeScroll(rect, element) {
+  var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
+
+  var scrollTop = getScroll(element, 'top');
+  var scrollLeft = getScroll(element, 'left');
+  var modifier = subtract ? -1 : 1;
+  rect.top += scrollTop * modifier;
+  rect.bottom += scrollTop * modifier;
+  rect.left += scrollLeft * modifier;
+  rect.right += scrollLeft * modifier;
+  return rect;
+}
+
+/*
+ * Helper to detect borders of a given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {CSSStyleDeclaration} styles
+ * Result of `getStyleComputedProperty` on the given element
+ * @param {String} axis - `x` or `y`
+ * @return {number} borders - The borders size of the given axis
+ */
+
+function getBordersSize(styles, axis) {
+  var sideA = axis === 'x' ? 'Left' : 'Top';
+  var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
+
+  return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
+}
+
+/**
+ * Tells if you are running Internet Explorer 10
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean} isIE10
+ */
+var isIE10 = undefined;
+
+var isIE10$1 = function () {
+  if (isIE10 === undefined) {
+    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
+  }
+  return isIE10;
+};
+
+function getSize(axis, body, html, computedStyle) {
+  return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0);
+}
+
+function getWindowSizes() {
+  var body = document.body;
+  var html = document.documentElement;
+  var computedStyle = isIE10$1() && getComputedStyle(html);
+
+  return {
+    height: getSize('Height', body, html, computedStyle),
+    width: getSize('Width', body, html, computedStyle)
+  };
+}
+
+var classCallCheck = function (instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+};
+
+var createClass = function () {
+  function defineProperties(target, props) {
+    for (var i = 0; i < props.length; i++) {
+      var descriptor = props[i];
+      descriptor.enumerable = descriptor.enumerable || false;
+      descriptor.configurable = true;
+      if ("value" in descriptor) descriptor.writable = true;
+      Object.defineProperty(target, descriptor.key, descriptor);
+    }
+  }
+
+  return function (Constructor, protoProps, staticProps) {
+    if (protoProps) defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) defineProperties(Constructor, staticProps);
+    return Constructor;
+  };
+}();
+
+
+
+
+
+var defineProperty = function (obj, key, value) {
+  if (key in obj) {
+    Object.defineProperty(obj, key, {
+      value: value,
+      enumerable: true,
+      configurable: true,
+      writable: true
+    });
+  } else {
+    obj[key] = value;
+  }
+
+  return obj;
+};
+
+var _extends = Object.assign || function (target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+
+  return target;
+};
+
+/**
+ * Given element offsets, generate an output similar to getBoundingClientRect
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} offsets
+ * @returns {Object} ClientRect like output
+ */
+function getClientRect(offsets) {
+  return _extends({}, offsets, {
+    right: offsets.left + offsets.width,
+    bottom: offsets.top + offsets.height
+  });
+}
+
+/**
+ * Get bounding client rect of given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} element
+ * @return {Object} client rect
+ */
+function getBoundingClientRect(element) {
+  var rect = {};
+
+  // IE10 10 FIX: Please, don't ask, the element isn't
+  // considered in DOM in some circumstances...
+  // This isn't reproducible in IE10 compatibility mode of IE11
+  if (isIE10$1()) {
+    try {
+      rect = element.getBoundingClientRect();
+      var scrollTop = getScroll(element, 'top');
+      var scrollLeft = getScroll(element, 'left');
+      rect.top += scrollTop;
+      rect.left += scrollLeft;
+      rect.bottom += scrollTop;
+      rect.right += scrollLeft;
+    } catch (err) {}
+  } else {
+    rect = element.getBoundingClientRect();
+  }
+
+  var result = {
+    left: rect.left,
+    top: rect.top,
+    width: rect.right - rect.left,
+    height: rect.bottom - rect.top
+  };
+
+  // subtract scrollbar size from sizes
+  var sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
+  var width = sizes.width || element.clientWidth || result.right - result.left;
+  var height = sizes.height || element.clientHeight || result.bottom - result.top;
+
+  var horizScrollbar = element.offsetWidth - width;
+  var vertScrollbar = element.offsetHeight - height;
+
+  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
+  // we make this check conditional for performance reasons
+  if (horizScrollbar || vertScrollbar) {
+    var styles = getStyleComputedProperty(element);
+    horizScrollbar -= getBordersSize(styles, 'x');
+    vertScrollbar -= getBordersSize(styles, 'y');
+
+    result.width -= horizScrollbar;
+    result.height -= vertScrollbar;
+  }
+
+  return getClientRect(result);
+}
+
+function getOffsetRectRelativeToArbitraryNode(children, parent) {
+  var isIE10 = isIE10$1();
+  var isHTML = parent.nodeName === 'HTML';
+  var childrenRect = getBoundingClientRect(children);
+  var parentRect = getBoundingClientRect(parent);
+  var scrollParent = getScrollParent(children);
+
+  var styles = getStyleComputedProperty(parent);
+  var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
+  var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
+
+  var offsets = getClientRect({
+    top: childrenRect.top - parentRect.top - borderTopWidth,
+    left: childrenRect.left - parentRect.left - borderLeftWidth,
+    width: childrenRect.width,
+    height: childrenRect.height
+  });
+  offsets.marginTop = 0;
+  offsets.marginLeft = 0;
+
+  // Subtract margins of documentElement in case it's being used as parent
+  // we do this only on HTML because it's the only element that behaves
+  // differently when margins are applied to it. The margins are included in
+  // the box of the documentElement, in the other cases not.
+  if (!isIE10 && isHTML) {
+    var marginTop = parseFloat(styles.marginTop, 10);
+    var marginLeft = parseFloat(styles.marginLeft, 10);
+
+    offsets.top -= borderTopWidth - marginTop;
+    offsets.bottom -= borderTopWidth - marginTop;
+    offsets.left -= borderLeftWidth - marginLeft;
+    offsets.right -= borderLeftWidth - marginLeft;
+
+    // Attach marginTop and marginLeft because in some circumstances we may need them
+    offsets.marginTop = marginTop;
+    offsets.marginLeft = marginLeft;
+  }
+
+  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
+    offsets = includeScroll(offsets, parent);
+  }
+
+  return offsets;
+}
+
+function getViewportOffsetRectRelativeToArtbitraryNode(element) {
+  var html = element.ownerDocument.documentElement;
+  var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
+  var width = Math.max(html.clientWidth, window.innerWidth || 0);
+  var height = Math.max(html.clientHeight, window.innerHeight || 0);
+
+  var scrollTop = getScroll(html);
+  var scrollLeft = getScroll(html, 'left');
+
+  var offset = {
+    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
+    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
+    width: width,
+    height: height
+  };
+
+  return getClientRect(offset);
+}
+
+/**
+ * Check if the given element is fixed or is inside a fixed parent
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {Element} customContainer
+ * @returns {Boolean} answer to "isFixed?"
+ */
+function isFixed(element) {
+  var nodeName = element.nodeName;
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    return false;
+  }
+  if (getStyleComputedProperty(element, 'position') === 'fixed') {
+    return true;
+  }
+  return isFixed(getParentNode(element));
+}
+
+/**
+ * Computed the boundaries limits and return them
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} popper
+ * @param {HTMLElement} reference
+ * @param {number} padding
+ * @param {HTMLElement} boundariesElement - Element used to define the boundaries
+ * @returns {Object} Coordinates of the boundaries
+ */
+function getBoundaries(popper, reference, padding, boundariesElement) {
+  // NOTE: 1 DOM access here
+  var boundaries = { top: 0, left: 0 };
+  var offsetParent = findCommonOffsetParent(popper, reference);
+
+  // Handle viewport case
+  if (boundariesElement === 'viewport') {
+    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
+  } else {
+    // Handle other cases based on DOM element used as boundaries
+    var boundariesNode = void 0;
+    if (boundariesElement === 'scrollParent') {
+      boundariesNode = getScrollParent(getParentNode(reference));
+      if (boundariesNode.nodeName === 'BODY') {
+        boundariesNode = popper.ownerDocument.documentElement;
+      }
+    } else if (boundariesElement === 'window') {
+      boundariesNode = popper.ownerDocument.documentElement;
+    } else {
+      boundariesNode = boundariesElement;
+    }
+
+    var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
+
+    // In case of HTML, we need a different computation
+    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
+      var _getWindowSizes = getWindowSizes(),
+          height = _getWindowSizes.height,
+          width = _getWindowSizes.width;
+
+      boundaries.top += offsets.top - offsets.marginTop;
+      boundaries.bottom = height + offsets.top;
+      boundaries.left += offsets.left - offsets.marginLeft;
+      boundaries.right = width + offsets.left;
+    } else {
+      // for all the other DOM elements, this one is good
+      boundaries = offsets;
+    }
+  }
+
+  // Add paddings
+  boundaries.left += padding;
+  boundaries.top += padding;
+  boundaries.right -= padding;
+  boundaries.bottom -= padding;
+
+  return boundaries;
+}
+
+function getArea(_ref) {
+  var width = _ref.width,
+      height = _ref.height;
+
+  return width * height;
+}
+
+/**
+ * Utility used to transform the `auto` placement to the placement with more
+ * available space.
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
+  var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
+
+  if (placement.indexOf('auto') === -1) {
+    return placement;
+  }
+
+  var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
+
+  var rects = {
+    top: {
+      width: boundaries.width,
+      height: refRect.top - boundaries.top
+    },
+    right: {
+      width: boundaries.right - refRect.right,
+      height: boundaries.height
+    },
+    bottom: {
+      width: boundaries.width,
+      height: boundaries.bottom - refRect.bottom
+    },
+    left: {
+      width: refRect.left - boundaries.left,
+      height: boundaries.height
+    }
+  };
+
+  var sortedAreas = Object.keys(rects).map(function (key) {
+    return _extends({
+      key: key
+    }, rects[key], {
+      area: getArea(rects[key])
+    });
+  }).sort(function (a, b) {
+    return b.area - a.area;
+  });
+
+  var filteredAreas = sortedAreas.filter(function (_ref2) {
+    var width = _ref2.width,
+        height = _ref2.height;
+    return width >= popper.clientWidth && height >= popper.clientHeight;
+  });
+
+  var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
+
+  var variation = placement.split('-')[1];
+
+  return computedPlacement + (variation ? '-' + variation : '');
+}
+
+/**
+ * Get offsets to the reference element
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} state
+ * @param {Element} popper - the popper element
+ * @param {Element} reference - the reference element (the popper will be relative to this)
+ * @returns {Object} An object containing the offsets which will be applied to the popper
+ */
+function getReferenceOffsets(state, popper, reference) {
+  var commonOffsetParent = findCommonOffsetParent(popper, reference);
+  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
+}
+
+/**
+ * Get the outer sizes of the given element (offset size + margins)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Object} object containing width and height properties
+ */
+function getOuterSizes(element) {
+  var styles = getComputedStyle(element);
+  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
+  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  var result = {
+    width: element.offsetWidth + y,
+    height: element.offsetHeight + x
+  };
+  return result;
+}
+
+/**
+ * Get the opposite placement of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement
+ * @returns {String} flipped placement
+ */
+function getOppositePlacement(placement) {
+  var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash[matched];
+  });
+}
+
+/**
+ * Get offsets to the popper
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} position - CSS position the Popper will get applied
+ * @param {HTMLElement} popper - the popper element
+ * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
+ * @param {String} placement - one of the valid placement options
+ * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
+ */
+function getPopperOffsets(popper, referenceOffsets, placement) {
+  placement = placement.split('-')[0];
+
+  // Get popper node sizes
+  var popperRect = getOuterSizes(popper);
+
+  // Add position, width and height to our offsets object
+  var popperOffsets = {
+    width: popperRect.width,
+    height: popperRect.height
+  };
+
+  // depending by the popper placement we have to compute its offsets slightly differently
+  var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
+  var mainSide = isHoriz ? 'top' : 'left';
+  var secondarySide = isHoriz ? 'left' : 'top';
+  var measurement = isHoriz ? 'height' : 'width';
+  var secondaryMeasurement = !isHoriz ? 'height' : 'width';
+
+  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
+  if (placement === secondarySide) {
+    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
+  } else {
+    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
+  }
+
+  return popperOffsets;
+}
+
+/**
+ * Mimics the `find` method of Array
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function find(arr, check) {
+  // use native find if supported
+  if (Array.prototype.find) {
+    return arr.find(check);
+  }
+
+  // use `filter` to obtain the same behavior of `find`
+  return arr.filter(check)[0];
+}
+
+/**
+ * Return the index of the matching object
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function findIndex(arr, prop, value) {
+  // use native findIndex if supported
+  if (Array.prototype.findIndex) {
+    return arr.findIndex(function (cur) {
+      return cur[prop] === value;
+    });
+  }
+
+  // use `find` + `indexOf` if `findIndex` isn't supported
+  var match = find(arr, function (obj) {
+    return obj[prop] === value;
+  });
+  return arr.indexOf(match);
+}
+
+/**
+ * Loop trough the list of modifiers and run them in order,
+ * each of them will then edit the data object.
+ * @method
+ * @memberof Popper.Utils
+ * @param {dataObject} data
+ * @param {Array} modifiers
+ * @param {String} ends - Optional modifier name used as stopper
+ * @returns {dataObject}
+ */
+function runModifiers(modifiers, data, ends) {
+  var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
+
+  modifiersToRun.forEach(function (modifier) {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
+      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
+    }
+    var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
+    if (modifier.enabled && isFunction(fn)) {
+      // Add properties to offsets to make them a complete clientRect object
+      // we do this before each modifier to make sure the previous one doesn't
+      // mess with these values
+      data.offsets.popper = getClientRect(data.offsets.popper);
+      data.offsets.reference = getClientRect(data.offsets.reference);
+
+      data = fn(data, modifier);
+    }
+  });
+
+  return data;
+}
+
+/**
+ * Updates the position of the popper, computing the new offsets and applying
+ * the new style.<br />
+ * Prefer `scheduleUpdate` over `update` because of performance reasons.
+ * @method
+ * @memberof Popper
+ */
+function update() {
+  // if popper is destroyed, don't perform any further update
+  if (this.state.isDestroyed) {
+    return;
+  }
+
+  var data = {
+    instance: this,
+    styles: {},
+    arrowStyles: {},
+    attributes: {},
+    flipped: false,
+    offsets: {}
+  };
+
+  // compute reference element offsets
+  data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference);
+
+  // compute auto placement, store placement inside the data object,
+  // modifiers will be able to edit `placement` if needed
+  // and refer to originalPlacement to know the original value
+  data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);
+
+  // store the computed placement inside `originalPlacement`
+  data.originalPlacement = data.placement;
+
+  // compute the popper offsets
+  data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);
+  data.offsets.popper.position = 'absolute';
+
+  // run the modifiers
+  data = runModifiers(this.modifiers, data);
+
+  // the first `update` will call `onCreate` callback
+  // the other ones will call `onUpdate` callback
+  if (!this.state.isCreated) {
+    this.state.isCreated = true;
+    this.options.onCreate(data);
+  } else {
+    this.options.onUpdate(data);
+  }
+}
+
+/**
+ * Helper used to know if the given modifier is enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean}
+ */
+function isModifierEnabled(modifiers, modifierName) {
+  return modifiers.some(function (_ref) {
+    var name = _ref.name,
+        enabled = _ref.enabled;
+    return enabled && name === modifierName;
+  });
+}
+
+/**
+ * Get the prefixed supported property name
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} property (camelCase)
+ * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
+ */
+function getSupportedPropertyName(property) {
+  var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
+  var upperProp = property.charAt(0).toUpperCase() + property.slice(1);
+
+  for (var i = 0; i < prefixes.length - 1; i++) {
+    var prefix = prefixes[i];
+    var toCheck = prefix ? '' + prefix + upperProp : property;
+    if (typeof document.body.style[toCheck] !== 'undefined') {
+      return toCheck;
+    }
+  }
+  return null;
+}
+
+/**
+ * Destroy the popper
+ * @method
+ * @memberof Popper
+ */
+function destroy() {
+  this.state.isDestroyed = true;
+
+  // touch DOM only if `applyStyle` modifier is enabled
+  if (isModifierEnabled(this.modifiers, 'applyStyle')) {
+    this.popper.removeAttribute('x-placement');
+    this.popper.style.left = '';
+    this.popper.style.position = '';
+    this.popper.style.top = '';
+    this.popper.style[getSupportedPropertyName('transform')] = '';
+  }
+
+  this.disableEventListeners();
+
+  // remove the popper if user explicity asked for the deletion on destroy
+  // do not use `remove` because IE11 doesn't support it
+  if (this.options.removeOnDestroy) {
+    this.popper.parentNode.removeChild(this.popper);
+  }
+  return this;
+}
+
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  var ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
+function attachToScrollParents(scrollParent, event, callback, scrollParents) {
+  var isBody = scrollParent.nodeName === 'BODY';
+  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
+  target.addEventListener(event, callback, { passive: true });
+
+  if (!isBody) {
+    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
+  }
+  scrollParents.push(target);
+}
+
+/**
+ * Setup needed event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function setupEventListeners(reference, options, state, updateBound) {
+  // Resize event listener on window
+  state.updateBound = updateBound;
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
+
+  // Scroll event listener on scroll parents
+  var scrollElement = getScrollParent(reference);
+  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
+  state.scrollElement = scrollElement;
+  state.eventsEnabled = true;
+
+  return state;
+}
+
+/**
+ * It will add resize/scroll events and start recalculating
+ * position of the popper element when they are triggered.
+ * @method
+ * @memberof Popper
+ */
+function enableEventListeners() {
+  if (!this.state.eventsEnabled) {
+    this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
+  }
+}
+
+/**
+ * Remove event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function removeEventListeners(reference, state) {
+  // Remove resize event listener on window
+  getWindow(reference).removeEventListener('resize', state.updateBound);
+
+  // Remove scroll event listener on scroll parents
+  state.scrollParents.forEach(function (target) {
+    target.removeEventListener('scroll', state.updateBound);
+  });
+
+  // Reset state
+  state.updateBound = null;
+  state.scrollParents = [];
+  state.scrollElement = null;
+  state.eventsEnabled = false;
+  return state;
+}
+
+/**
+ * It will remove resize/scroll events and won't recalculate popper position
+ * when they are triggered. It also won't trigger onUpdate callback anymore,
+ * unless you call `update` method manually.
+ * @method
+ * @memberof Popper
+ */
+function disableEventListeners() {
+  if (this.state.eventsEnabled) {
+    cancelAnimationFrame(this.scheduleUpdate);
+    this.state = removeEventListeners(this.reference, this.state);
+  }
+}
+
+/**
+ * Tells if a given input is a number
+ * @method
+ * @memberof Popper.Utils
+ * @param {*} input to check
+ * @return {Boolean}
+ */
+function isNumeric(n) {
+  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
+}
+
+/**
+ * Set the style to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the style to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setStyles(element, styles) {
+  Object.keys(styles).forEach(function (prop) {
+    var unit = '';
+    // add unit if the value is numeric and is one of the following
+    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
+      unit = 'px';
+    }
+    element.style[prop] = styles[prop] + unit;
+  });
+}
+
+/**
+ * Set the attributes to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the attributes to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setAttributes(element, attributes) {
+  Object.keys(attributes).forEach(function (prop) {
+    var value = attributes[prop];
+    if (value !== false) {
+      element.setAttribute(prop, attributes[prop]);
+    } else {
+      element.removeAttribute(prop);
+    }
+  });
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} data.styles - List of style properties - values to apply to popper element
+ * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The same data object
+ */
+function applyStyle(data) {
+  // any property present in `data.styles` will be applied to the popper,
+  // in this way we can make the 3rd party modifiers add custom styles to it
+  // Be aware, modifiers could override the properties defined in the previous
+  // lines of this modifier!
+  setStyles(data.instance.popper, data.styles);
+
+  // any property present in `data.attributes` will be applied to the popper,
+  // they will be set as HTML attributes of the element
+  setAttributes(data.instance.popper, data.attributes);
+
+  // if arrowElement is defined and arrowStyles has some properties
+  if (data.arrowElement && Object.keys(data.arrowStyles).length) {
+    setStyles(data.arrowElement, data.arrowStyles);
+  }
+
+  return data;
+}
+
+/**
+ * Set the x-placement attribute before everything else because it could be used
+ * to add margins to the popper margins needs to be calculated to get the
+ * correct popper offsets.
+ * @method
+ * @memberof Popper.modifiers
+ * @param {HTMLElement} reference - The reference element used to position the popper
+ * @param {HTMLElement} popper - The HTML element used as popper.
+ * @param {Object} options - Popper.js options
+ */
+function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
+  // compute reference element offsets
+  var referenceOffsets = getReferenceOffsets(state, popper, reference);
+
+  // compute auto placement, store placement inside the data object,
+  // modifiers will be able to edit `placement` if needed
+  // and refer to originalPlacement to know the original value
+  var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);
+
+  popper.setAttribute('x-placement', placement);
+
+  // Apply `position` to popper before anything else because
+  // without the position applied we can't guarantee correct computations
+  setStyles(popper, { position: 'absolute' });
+
+  return options;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeStyle(data, options) {
+  var x = options.x,
+      y = options.y;
+  var popper = data.offsets.popper;
+
+  // Remove this legacy support in Popper.js v2
+
+  var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {
+    return modifier.name === 'applyStyle';
+  }).gpuAcceleration;
+  if (legacyGpuAccelerationOption !== undefined) {
+    console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
+  }
+  var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;
+
+  var offsetParent = getOffsetParent(data.instance.popper);
+  var offsetParentRect = getBoundingClientRect(offsetParent);
+
+  // Styles
+  var styles = {
+    position: popper.position
+  };
+
+  // floor sides to avoid blurry text
+  var offsets = {
+    left: Math.floor(popper.left),
+    top: Math.floor(popper.top),
+    bottom: Math.floor(popper.bottom),
+    right: Math.floor(popper.right)
+  };
+
+  var sideA = x === 'bottom' ? 'top' : 'bottom';
+  var sideB = y === 'right' ? 'left' : 'right';
+
+  // if gpuAcceleration is set to `true` and transform is supported,
+  //  we use `translate3d` to apply the position to the popper we
+  // automatically use the supported prefixed version if needed
+  var prefixedProperty = getSupportedPropertyName('transform');
+
+  // now, let's make a step back and look at this code closely (wtf?)
+  // If the content of the popper grows once it's been positioned, it
+  // may happen that the popper gets misplaced because of the new content
+  // overflowing its reference element
+  // To avoid this problem, we provide two options (x and y), which allow
+  // the consumer to define the offset origin.
+  // If we position a popper on top of a reference element, we can set
+  // `x` to `top` to make the popper grow towards its top instead of
+  // its bottom.
+  var left = void 0,
+      top = void 0;
+  if (sideA === 'bottom') {
+    top = -offsetParentRect.height + offsets.bottom;
+  } else {
+    top = offsets.top;
+  }
+  if (sideB === 'right') {
+    left = -offsetParentRect.width + offsets.right;
+  } else {
+    left = offsets.left;
+  }
+  if (gpuAcceleration && prefixedProperty) {
+    styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';
+    styles[sideA] = 0;
+    styles[sideB] = 0;
+    styles.willChange = 'transform';
+  } else {
+    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
+    var invertTop = sideA === 'bottom' ? -1 : 1;
+    var invertLeft = sideB === 'right' ? -1 : 1;
+    styles[sideA] = top * invertTop;
+    styles[sideB] = left * invertLeft;
+    styles.willChange = sideA + ', ' + sideB;
+  }
+
+  // Attributes
+  var attributes = {
+    'x-placement': data.placement
+  };
+
+  // Update `data` attributes, styles and arrowStyles
+  data.attributes = _extends({}, attributes, data.attributes);
+  data.styles = _extends({}, styles, data.styles);
+  data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);
+
+  return data;
+}
+
+/**
+ * Helper used to know if the given modifier depends from another one.<br />
+ * It checks if the needed modifier is listed and enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @param {Array} modifiers - list of modifiers
+ * @param {String} requestingName - name of requesting modifier
+ * @param {String} requestedName - name of requested modifier
+ * @returns {Boolean}
+ */
+function isModifierRequired(modifiers, requestingName, requestedName) {
+  var requesting = find(modifiers, function (_ref) {
+    var name = _ref.name;
+    return name === requestingName;
+  });
+
+  var isRequired = !!requesting && modifiers.some(function (modifier) {
+    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
+  });
+
+  if (!isRequired) {
+    var _requesting = '`' + requestingName + '`';
+    var requested = '`' + requestedName + '`';
+    console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
+  }
+  return isRequired;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function arrow(data, options) {
+  var _data$offsets$arrow;
+
+  // arrow depends on keepTogether in order to work
+  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
+    return data;
+  }
+
+  var arrowElement = options.element;
+
+  // if arrowElement is a string, suppose it's a CSS selector
+  if (typeof arrowElement === 'string') {
+    arrowElement = data.instance.popper.querySelector(arrowElement);
+
+    // if arrowElement is not found, don't run the modifier
+    if (!arrowElement) {
+      return data;
+    }
+  } else {
+    // if the arrowElement isn't a query selector we must check that the
+    // provided DOM node is child of its popper node
+    if (!data.instance.popper.contains(arrowElement)) {
+      console.warn('WARNING: `arrow.element` must be child of its popper element!');
+      return data;
+    }
+  }
+
+  var placement = data.placement.split('-')[0];
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var isVertical = ['left', 'right'].indexOf(placement) !== -1;
+
+  var len = isVertical ? 'height' : 'width';
+  var sideCapitalized = isVertical ? 'Top' : 'Left';
+  var side = sideCapitalized.toLowerCase();
+  var altSide = isVertical ? 'left' : 'top';
+  var opSide = isVertical ? 'bottom' : 'right';
+  var arrowElementSize = getOuterSizes(arrowElement)[len];
+
+  //
+  // extends keepTogether behavior making sure the popper and its
+  // reference have enough pixels in conjuction
+  //
+
+  // top/left side
+  if (reference[opSide] - arrowElementSize < popper[side]) {
+    data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
+  }
+  // bottom/right side
+  if (reference[side] + arrowElementSize > popper[opSide]) {
+    data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
+  }
+  data.offsets.popper = getClientRect(data.offsets.popper);
+
+  // compute center of the popper
+  var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;
+
+  // Compute the sideValue using the updated popper offsets
+  // take popper margin in account because we don't have this info available
+  var css = getStyleComputedProperty(data.instance.popper);
+  var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);
+  var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);
+  var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;
+
+  // prevent arrowElement from being placed not contiguously to its popper
+  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);
+
+  data.arrowElement = arrowElement;
+  data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);
+
+  return data;
+}
+
+/**
+ * Get the opposite placement variation of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement variation
+ * @returns {String} flipped placement variation
+ */
+function getOppositeVariation(variation) {
+  if (variation === 'end') {
+    return 'start';
+  } else if (variation === 'start') {
+    return 'end';
+  }
+  return variation;
+}
+
+/**
+ * List of accepted placements to use as values of the `placement` option.<br />
+ * Valid placements are:
+ * - `auto`
+ * - `top`
+ * - `right`
+ * - `bottom`
+ * - `left`
+ *
+ * Each placement can have a variation from this list:
+ * - `-start`
+ * - `-end`
+ *
+ * Variations are interpreted easily if you think of them as the left to right
+ * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
+ * is right.<br />
+ * Vertically (`left` and `right`), `start` is top and `end` is bottom.
+ *
+ * Some valid examples are:
+ * - `top-end` (on top of reference, right aligned)
+ * - `right-start` (on right of reference, top aligned)
+ * - `bottom` (on bottom, centered)
+ * - `auto-right` (on the side with more space available, alignment depends by placement)
+ *
+ * @static
+ * @type {Array}
+ * @enum {String}
+ * @readonly
+ * @method placements
+ * @memberof Popper
+ */
+var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];
+
+// Get rid of `auto` `auto-start` and `auto-end`
+var validPlacements = placements.slice(3);
+
+/**
+ * Given an initial placement, returns all the subsequent placements
+ * clockwise (or counter-clockwise).
+ *
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement - A valid placement (it accepts variations)
+ * @argument {Boolean} counter - Set to true to walk the placements counterclockwise
+ * @returns {Array} placements including their variations
+ */
+function clockwise(placement) {
+  var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
+
+  var index = validPlacements.indexOf(placement);
+  var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
+  return counter ? arr.reverse() : arr;
+}
+
+var BEHAVIORS = {
+  FLIP: 'flip',
+  CLOCKWISE: 'clockwise',
+  COUNTERCLOCKWISE: 'counterclockwise'
+};
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function flip(data, options) {
+  // if `inner` modifier is enabled, we can't use the `flip` modifier
+  if (isModifierEnabled(data.instance.modifiers, 'inner')) {
+    return data;
+  }
+
+  if (data.flipped && data.placement === data.originalPlacement) {
+    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
+    return data;
+  }
+
+  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement);
+
+  var placement = data.placement.split('-')[0];
+  var placementOpposite = getOppositePlacement(placement);
+  var variation = data.placement.split('-')[1] || '';
+
+  var flipOrder = [];
+
+  switch (options.behavior) {
+    case BEHAVIORS.FLIP:
+      flipOrder = [placement, placementOpposite];
+      break;
+    case BEHAVIORS.CLOCKWISE:
+      flipOrder = clockwise(placement);
+      break;
+    case BEHAVIORS.COUNTERCLOCKWISE:
+      flipOrder = clockwise(placement, true);
+      break;
+    default:
+      flipOrder = options.behavior;
+  }
+
+  flipOrder.forEach(function (step, index) {
+    if (placement !== step || flipOrder.length === index + 1) {
+      return data;
+    }
+
+    placement = data.placement.split('-')[0];
+    placementOpposite = getOppositePlacement(placement);
+
+    var popperOffsets = data.offsets.popper;
+    var refOffsets = data.offsets.reference;
+
+    // using floor because the reference offsets may contain decimals we are not going to consider here
+    var floor = Math.floor;
+    var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);
+
+    var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
+    var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
+    var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
+    var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);
+
+    var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;
+
+    // flip the variation if required
+    var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
+    var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
+
+    if (overlapsRef || overflowsBoundaries || flippedVariation) {
+      // this boolean to detect any flip loop
+      data.flipped = true;
+
+      if (overlapsRef || overflowsBoundaries) {
+        placement = flipOrder[index + 1];
+      }
+
+      if (flippedVariation) {
+        variation = getOppositeVariation(variation);
+      }
+
+      data.placement = placement + (variation ? '-' + variation : '');
+
+      // this object contains `position`, we want to preserve it along with
+      // any additional property we may add in the future
+      data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));
+
+      data = runModifiers(data.instance.modifiers, data, 'flip');
+    }
+  });
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function keepTogether(data) {
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var placement = data.placement.split('-')[0];
+  var floor = Math.floor;
+  var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
+  var side = isVertical ? 'right' : 'bottom';
+  var opSide = isVertical ? 'left' : 'top';
+  var measurement = isVertical ? 'width' : 'height';
+
+  if (popper[side] < floor(reference[opSide])) {
+    data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
+  }
+  if (popper[opSide] > floor(reference[side])) {
+    data.offsets.popper[opSide] = floor(reference[side]);
+  }
+
+  return data;
+}
+
+/**
+ * Converts a string containing value + unit into a px value number
+ * @function
+ * @memberof {modifiers~offset}
+ * @private
+ * @argument {String} str - Value + unit string
+ * @argument {String} measurement - `height` or `width`
+ * @argument {Object} popperOffsets
+ * @argument {Object} referenceOffsets
+ * @returns {Number|String}
+ * Value in pixels, or original string if no values were extracted
+ */
+function toValue(str, measurement, popperOffsets, referenceOffsets) {
+  // separate value from unit
+  var split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
+  var value = +split[1];
+  var unit = split[2];
+
+  // If it's not a number it's an operator, I guess
+  if (!value) {
+    return str;
+  }
+
+  if (unit.indexOf('%') === 0) {
+    var element = void 0;
+    switch (unit) {
+      case '%p':
+        element = popperOffsets;
+        break;
+      case '%':
+      case '%r':
+      default:
+        element = referenceOffsets;
+    }
+
+    var rect = getClientRect(element);
+    return rect[measurement] / 100 * value;
+  } else if (unit === 'vh' || unit === 'vw') {
+    // if is a vh or vw, we calculate the size based on the viewport
+    var size = void 0;
+    if (unit === 'vh') {
+      size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
+    } else {
+      size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
+    }
+    return size / 100 * value;
+  } else {
+    // if is an explicit pixel unit, we get rid of the unit and keep the value
+    // if is an implicit unit, it's px, and we return just the value
+    return value;
+  }
+}
+
+/**
+ * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
+ * @function
+ * @memberof {modifiers~offset}
+ * @private
+ * @argument {String} offset
+ * @argument {Object} popperOffsets
+ * @argument {Object} referenceOffsets
+ * @argument {String} basePlacement
+ * @returns {Array} a two cells array with x and y offsets in numbers
+ */
+function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {
+  var offsets = [0, 0];
+
+  // Use height if placement is left or right and index is 0 otherwise use width
+  // in this way the first offset will use an axis and the second one
+  // will use the other one
+  var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;
+
+  // Split the offset string to obtain a list of values and operands
+  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)
+  var fragments = offset.split(/(\+|\-)/).map(function (frag) {
+    return frag.trim();
+  });
+
+  // Detect if the offset string contains a pair of values or a single one
+  // they could be separated by comma or space
+  var divider = fragments.indexOf(find(fragments, function (frag) {
+    return frag.search(/,|\s/) !== -1;
+  }));
+
+  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
+    console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
+  }
+
+  // If divider is found, we divide the list of values and operands to divide
+  // them by ofset X and Y.
+  var splitRegex = /\s*,\s*|\s+/;
+  var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];
+
+  // Convert the values with units to absolute pixels to allow our computations
+  ops = ops.map(function (op, index) {
+    // Most of the units rely on the orientation of the popper
+    var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
+    var mergeWithPrevious = false;
+    return op
+    // This aggregates any `+` or `-` sign that aren't considered operators
+    // e.g.: 10 + +5 => [10, +, +5]
+    .reduce(function (a, b) {
+      if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
+        a[a.length - 1] = b;
+        mergeWithPrevious = true;
+        return a;
+      } else if (mergeWithPrevious) {
+        a[a.length - 1] += b;
+        mergeWithPrevious = false;
+        return a;
+      } else {
+        return a.concat(b);
+      }
+    }, [])
+    // Here we convert the string values into number values (in px)
+    .map(function (str) {
+      return toValue(str, measurement, popperOffsets, referenceOffsets);
+    });
+  });
+
+  // Loop trough the offsets arrays and execute the operations
+  ops.forEach(function (op, index) {
+    op.forEach(function (frag, index2) {
+      if (isNumeric(frag)) {
+        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
+      }
+    });
+  });
+  return offsets;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @argument {Number|String} options.offset=0
+ * The offset value as described in the modifier description
+ * @returns {Object} The data object, properly modified
+ */
+function offset(data, _ref) {
+  var offset = _ref.offset;
+  var placement = data.placement,
+      _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var basePlacement = placement.split('-')[0];
+
+  var offsets = void 0;
+  if (isNumeric(+offset)) {
+    offsets = [+offset, 0];
+  } else {
+    offsets = parseOffset(offset, popper, reference, basePlacement);
+  }
+
+  if (basePlacement === 'left') {
+    popper.top += offsets[0];
+    popper.left -= offsets[1];
+  } else if (basePlacement === 'right') {
+    popper.top += offsets[0];
+    popper.left += offsets[1];
+  } else if (basePlacement === 'top') {
+    popper.left += offsets[0];
+    popper.top -= offsets[1];
+  } else if (basePlacement === 'bottom') {
+    popper.left += offsets[0];
+    popper.top += offsets[1];
+  }
+
+  data.popper = popper;
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function preventOverflow(data, options) {
+  var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);
+
+  // If offsetParent is the reference element, we really want to
+  // go one step up and use the next offsetParent as reference to
+  // avoid to make this modifier completely useless and look like broken
+  if (data.instance.reference === boundariesElement) {
+    boundariesElement = getOffsetParent(boundariesElement);
+  }
+
+  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement);
+  options.boundaries = boundaries;
+
+  var order = options.priority;
+  var popper = data.offsets.popper;
+
+  var check = {
+    primary: function primary(placement) {
+      var value = popper[placement];
+      if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
+        value = Math.max(popper[placement], boundaries[placement]);
+      }
+      return defineProperty({}, placement, value);
+    },
+    secondary: function secondary(placement) {
+      var mainSide = placement === 'right' ? 'left' : 'top';
+      var value = popper[mainSide];
+      if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
+        value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
+      }
+      return defineProperty({}, mainSide, value);
+    }
+  };
+
+  order.forEach(function (placement) {
+    var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
+    popper = _extends({}, popper, check[side](placement));
+  });
+
+  data.offsets.popper = popper;
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function shift(data) {
+  var placement = data.placement;
+  var basePlacement = placement.split('-')[0];
+  var shiftvariation = placement.split('-')[1];
+
+  // if shift shiftvariation is specified, run the modifier
+  if (shiftvariation) {
+    var _data$offsets = data.offsets,
+        reference = _data$offsets.reference,
+        popper = _data$offsets.popper;
+
+    var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
+    var side = isVertical ? 'left' : 'top';
+    var measurement = isVertical ? 'width' : 'height';
+
+    var shiftOffsets = {
+      start: defineProperty({}, side, reference[side]),
+      end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
+    };
+
+    data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
+  }
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function hide(data) {
+  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
+    return data;
+  }
+
+  var refRect = data.offsets.reference;
+  var bound = find(data.instance.modifiers, function (modifier) {
+    return modifier.name === 'preventOverflow';
+  }).boundaries;
+
+  if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
+    // Avoid unnecessary DOM access if visibility hasn't changed
+    if (data.hide === true) {
+      return data;
+    }
+
+    data.hide = true;
+    data.attributes['x-out-of-boundaries'] = '';
+  } else {
+    // Avoid unnecessary DOM access if visibility hasn't changed
+    if (data.hide === false) {
+      return data;
+    }
+
+    data.hide = false;
+    data.attributes['x-out-of-boundaries'] = false;
+  }
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function inner(data) {
+  var placement = data.placement;
+  var basePlacement = placement.split('-')[0];
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
+
+  var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
+
+  popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
+
+  data.placement = getOppositePlacement(placement);
+  data.offsets.popper = getClientRect(popper);
+
+  return data;
+}
+
+/**
+ * Modifier function, each modifier can have a function of this type assigned
+ * to its `fn` property.<br />
+ * These functions will be called on each update, this means that you must
+ * make sure they are performant enough to avoid performance bottlenecks.
+ *
+ * @function ModifierFn
+ * @argument {dataObject} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {dataObject} The data object, properly modified
+ */
+
+/**
+ * Modifiers are plugins used to alter the behavior of your poppers.<br />
+ * Popper.js uses a set of 9 modifiers to provide all the basic functionalities
+ * needed by the library.
+ *
+ * Usually you don't want to override the `order`, `fn` and `onLoad` props.
+ * All the other properties are configurations that could be tweaked.
+ * @namespace modifiers
+ */
+var modifiers = {
+  /**
+   * Modifier used to shift the popper on the start or end of its reference
+   * element.<br />
+   * It will read the variation of the `placement` property.<br />
+   * It can be one either `-end` or `-start`.
+   * @memberof modifiers
+   * @inner
+   */
+  shift: {
+    /** @prop {number} order=100 - Index used to define the order of execution */
+    order: 100,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: shift
+  },
+
+  /**
+   * The `offset` modifier can shift your popper on both its axis.
+   *
+   * It accepts the following units:
+   * - `px` or unitless, interpreted as pixels
+   * - `%` or `%r`, percentage relative to the length of the reference element
+   * - `%p`, percentage relative to the length of the popper element
+   * - `vw`, CSS viewport width unit
+   * - `vh`, CSS viewport height unit
+   *
+   * For length is intended the main axis relative to the placement of the popper.<br />
+   * This means that if the placement is `top` or `bottom`, the length will be the
+   * `width`. In case of `left` or `right`, it will be the height.
+   *
+   * You can provide a single value (as `Number` or `String`), or a pair of values
+   * as `String` divided by a comma or one (or more) white spaces.<br />
+   * The latter is a deprecated method because it leads to confusion and will be
+   * removed in v2.<br />
+   * Additionally, it accepts additions and subtractions between different units.
+   * Note that multiplications and divisions aren't supported.
+   *
+   * Valid examples are:
+   * ```
+   * 10
+   * '10%'
+   * '10, 10'
+   * '10%, 10'
+   * '10 + 10%'
+   * '10 - 5vh + 3%'
+   * '-10px + 5vh, 5px - 6%'
+   * ```
+   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
+   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.
+   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  offset: {
+    /** @prop {number} order=200 - Index used to define the order of execution */
+    order: 200,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: offset,
+    /** @prop {Number|String} offset=0
+     * The offset value as described in the modifier description
+     */
+    offset: 0
+  },
+
+  /**
+   * Modifier used to prevent the popper from being positioned outside the boundary.
+   *
+   * An scenario exists where the reference itself is not within the boundaries.<br />
+   * We can say it has "escaped the boundaries" — or just "escaped".<br />
+   * In this case we need to decide whether the popper should either:
+   *
+   * - detach from the reference and remain "trapped" in the boundaries, or
+   * - if it should ignore the boundary and "escape with its reference"
+   *
+   * When `escapeWithReference` is set to`true` and reference is completely
+   * outside its boundaries, the popper will overflow (or completely leave)
+   * the boundaries in order to remain attached to the edge of the reference.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  preventOverflow: {
+    /** @prop {number} order=300 - Index used to define the order of execution */
+    order: 300,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: preventOverflow,
+    /**
+     * @prop {Array} [priority=['left','right','top','bottom']]
+     * Popper will try to prevent overflow following these priorities by default,
+     * then, it could overflow on the left and on top of the `boundariesElement`
+     */
+    priority: ['left', 'right', 'top', 'bottom'],
+    /**
+     * @prop {number} padding=5
+     * Amount of pixel used to define a minimum distance between the boundaries
+     * and the popper this makes sure the popper has always a little padding
+     * between the edges of its container
+     */
+    padding: 5,
+    /**
+     * @prop {String|HTMLElement} boundariesElement='scrollParent'
+     * Boundaries used by the modifier, can be `scrollParent`, `window`,
+     * `viewport` or any DOM element.
+     */
+    boundariesElement: 'scrollParent'
+  },
+
+  /**
+   * Modifier used to make sure the reference and its popper stay near eachothers
+   * without leaving any gap between the two. Expecially useful when the arrow is
+   * enabled and you want to assure it to point to its reference element.
+   * It cares only about the first axis, you can still have poppers with margin
+   * between the popper and its reference element.
+   * @memberof modifiers
+   * @inner
+   */
+  keepTogether: {
+    /** @prop {number} order=400 - Index used to define the order of execution */
+    order: 400,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: keepTogether
+  },
+
+  /**
+   * This modifier is used to move the `arrowElement` of the popper to make
+   * sure it is positioned between the reference element and its popper element.
+   * It will read the outer size of the `arrowElement` node to detect how many
+   * pixels of conjuction are needed.
+   *
+   * It has no effect if no `arrowElement` is provided.
+   * @memberof modifiers
+   * @inner
+   */
+  arrow: {
+    /** @prop {number} order=500 - Index used to define the order of execution */
+    order: 500,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: arrow,
+    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
+    element: '[x-arrow]'
+  },
+
+  /**
+   * Modifier used to flip the popper's placement when it starts to overlap its
+   * reference element.
+   *
+   * Requires the `preventOverflow` modifier before it in order to work.
+   *
+   * **NOTE:** this modifier will interrupt the current update cycle and will
+   * restart it if it detects the need to flip the placement.
+   * @memberof modifiers
+   * @inner
+   */
+  flip: {
+    /** @prop {number} order=600 - Index used to define the order of execution */
+    order: 600,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: flip,
+    /**
+     * @prop {String|Array} behavior='flip'
+     * The behavior used to change the popper's placement. It can be one of
+     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
+     * placements (with optional variations).
+     */
+    behavior: 'flip',
+    /**
+     * @prop {number} padding=5
+     * The popper will flip if it hits the edges of the `boundariesElement`
+     */
+    padding: 5,
+    /**
+     * @prop {String|HTMLElement} boundariesElement='viewport'
+     * The element which will define the boundaries of the popper position,
+     * the popper will never be placed outside of the defined boundaries
+     * (except if keepTogether is enabled)
+     */
+    boundariesElement: 'viewport'
+  },
+
+  /**
+   * Modifier used to make the popper flow toward the inner of the reference element.
+   * By default, when this modifier is disabled, the popper will be placed outside
+   * the reference element.
+   * @memberof modifiers
+   * @inner
+   */
+  inner: {
+    /** @prop {number} order=700 - Index used to define the order of execution */
+    order: 700,
+    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
+    enabled: false,
+    /** @prop {ModifierFn} */
+    fn: inner
+  },
+
+  /**
+   * Modifier used to hide the popper when its reference element is outside of the
+   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can
+   * be used to hide with a CSS selector the popper when its reference is
+   * out of boundaries.
+   *
+   * Requires the `preventOverflow` modifier before it in order to work.
+   * @memberof modifiers
+   * @inner
+   */
+  hide: {
+    /** @prop {number} order=800 - Index used to define the order of execution */
+    order: 800,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: hide
+  },
+
+  /**
+   * Computes the style that will be applied to the popper element to gets
+   * properly positioned.
+   *
+   * Note that this modifier will not touch the DOM, it just prepares the styles
+   * so that `applyStyle` modifier can apply it. This separation is useful
+   * in case you need to replace `applyStyle` with a custom implementation.
+   *
+   * This modifier has `850` as `order` value to maintain backward compatibility
+   * with previous versions of Popper.js. Expect the modifiers ordering method
+   * to change in future major versions of the library.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  computeStyle: {
+    /** @prop {number} order=850 - Index used to define the order of execution */
+    order: 850,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: computeStyle,
+    /**
+     * @prop {Boolean} gpuAcceleration=true
+     * If true, it uses the CSS 3d transformation to position the popper.
+     * Otherwise, it will use the `top` and `left` properties.
+     */
+    gpuAcceleration: true,
+    /**
+     * @prop {string} [x='bottom']
+     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
+     * Change this if your popper should grow in a direction different from `bottom`
+     */
+    x: 'bottom',
+    /**
+     * @prop {string} [x='left']
+     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
+     * Change this if your popper should grow in a direction different from `right`
+     */
+    y: 'right'
+  },
+
+  /**
+   * Applies the computed styles to the popper element.
+   *
+   * All the DOM manipulations are limited to this modifier. This is useful in case
+   * you want to integrate Popper.js inside a framework or view library and you
+   * want to delegate all the DOM manipulations to it.
+   *
+   * Note that if you disable this modifier, you must make sure the popper element
+   * has its position set to `absolute` before Popper.js can do its work!
+   *
+   * Just disable this modifier and define you own to achieve the desired effect.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  applyStyle: {
+    /** @prop {number} order=900 - Index used to define the order of execution */
+    order: 900,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: applyStyle,
+    /** @prop {Function} */
+    onLoad: applyStyleOnLoad,
+    /**
+     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
+     * @prop {Boolean} gpuAcceleration=true
+     * If true, it uses the CSS 3d transformation to position the popper.
+     * Otherwise, it will use the `top` and `left` properties.
+     */
+    gpuAcceleration: undefined
+  }
+};
+
+/**
+ * The `dataObject` is an object containing all the informations used by Popper.js
+ * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
+ * @name dataObject
+ * @property {Object} data.instance The Popper.js instance
+ * @property {String} data.placement Placement applied to popper
+ * @property {String} data.originalPlacement Placement originally defined on init
+ * @property {Boolean} data.flipped True if popper has been flipped by flip modifier
+ * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.
+ * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
+ * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)
+ * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)
+ * @property {Object} data.boundaries Offsets of the popper boundaries
+ * @property {Object} data.offsets The measurements of popper, reference and arrow elements.
+ * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
+ * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
+ * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
+ */
+
+/**
+ * Default options provided to Popper.js constructor.<br />
+ * These can be overriden using the `options` argument of Popper.js.<br />
+ * To override an option, simply pass as 3rd argument an object with the same
+ * structure of this object, example:
+ * ```
+ * new Popper(ref, pop, {
+ *   modifiers: {
+ *     preventOverflow: { enabled: false }
+ *   }
+ * })
+ * ```
+ * @type {Object}
+ * @static
+ * @memberof Popper
+ */
+var Defaults = {
+  /**
+   * Popper's placement
+   * @prop {Popper.placements} placement='bottom'
+   */
+  placement: 'bottom',
+
+  /**
+   * Whether events (resize, scroll) are initially enabled
+   * @prop {Boolean} eventsEnabled=true
+   */
+  eventsEnabled: true,
+
+  /**
+   * Set to true if you want to automatically remove the popper when
+   * you call the `destroy` method.
+   * @prop {Boolean} removeOnDestroy=false
+   */
+  removeOnDestroy: false,
+
+  /**
+   * Callback called when the popper is created.<br />
+   * By default, is set to no-op.<br />
+   * Access Popper.js instance with `data.instance`.
+   * @prop {onCreate}
+   */
+  onCreate: function onCreate() {},
+
+  /**
+   * Callback called when the popper is updated, this callback is not called
+   * on the initialization/creation of the popper, but only on subsequent
+   * updates.<br />
+   * By default, is set to no-op.<br />
+   * Access Popper.js instance with `data.instance`.
+   * @prop {onUpdate}
+   */
+  onUpdate: function onUpdate() {},
+
+  /**
+   * List of modifiers used to modify the offsets before they are applied to the popper.
+   * They provide most of the functionalities of Popper.js
+   * @prop {modifiers}
+   */
+  modifiers: modifiers
+};
+
+/**
+ * @callback onCreate
+ * @param {dataObject} data
+ */
+
+/**
+ * @callback onUpdate
+ * @param {dataObject} data
+ */
+
+// Utils
+// Methods
+var Popper = function () {
+  /**
+   * Create a new Popper.js instance
+   * @class Popper
+   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper
+   * @param {HTMLElement} popper - The HTML element used as popper.
+   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
+   * @return {Object} instance - The generated Popper.js instance
+   */
+  function Popper(reference, popper) {
+    var _this = this;
+
+    var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+    classCallCheck(this, Popper);
+
+    this.scheduleUpdate = function () {
+      return requestAnimationFrame(_this.update);
+    };
+
+    // make update() debounced, so that it only runs at most once-per-tick
+    this.update = debounce(this.update.bind(this));
+
+    // with {} we create a new object with the options inside it
+    this.options = _extends({}, Popper.Defaults, options);
+
+    // init state
+    this.state = {
+      isDestroyed: false,
+      isCreated: false,
+      scrollParents: []
+    };
+
+    // get reference and popper elements (allow jQuery wrappers)
+    this.reference = reference && reference.jquery ? reference[0] : reference;
+    this.popper = popper && popper.jquery ? popper[0] : popper;
+
+    // Deep merge modifiers options
+    this.options.modifiers = {};
+    Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {
+      _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
+    });
+
+    // Refactoring modifiers' list (Object => Array)
+    this.modifiers = Object.keys(this.options.modifiers).map(function (name) {
+      return _extends({
+        name: name
+      }, _this.options.modifiers[name]);
+    })
+    // sort the modifiers by order
+    .sort(function (a, b) {
+      return a.order - b.order;
+    });
+
+    // modifiers have the ability to execute arbitrary code when Popper.js get inited
+    // such code is executed in the same order of its modifier
+    // they could add new properties to their options configuration
+    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
+    this.modifiers.forEach(function (modifierOptions) {
+      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
+        modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);
+      }
+    });
+
+    // fire the first update to position the popper in the right place
+    this.update();
+
+    var eventsEnabled = this.options.eventsEnabled;
+    if (eventsEnabled) {
+      // setup event listeners, they will take care of update the position in specific situations
+      this.enableEventListeners();
+    }
+
+    this.state.eventsEnabled = eventsEnabled;
+  }
+
+  // We can't use class properties because they don't get listed in the
+  // class prototype and break stuff like Sinon stubs
+
+
+  createClass(Popper, [{
+    key: 'update',
+    value: function update$$1() {
+      return update.call(this);
+    }
+  }, {
+    key: 'destroy',
+    value: function destroy$$1() {
+      return destroy.call(this);
+    }
+  }, {
+    key: 'enableEventListeners',
+    value: function enableEventListeners$$1() {
+      return enableEventListeners.call(this);
+    }
+  }, {
+    key: 'disableEventListeners',
+    value: function disableEventListeners$$1() {
+      return disableEventListeners.call(this);
+    }
+
+    /**
+     * Schedule an update, it will run on the next UI update available
+     * @method scheduleUpdate
+     * @memberof Popper
+     */
+
+
+    /**
+     * Collection of utilities useful when writing custom modifiers.
+     * Starting from version 1.7, this method is available only if you
+     * include `popper-utils.js` before `popper.js`.
+     *
+     * **DEPRECATION**: This way to access PopperUtils is deprecated
+     * and will be removed in v2! Use the PopperUtils module directly instead.
+     * Due to the high instability of the methods contained in Utils, we can't
+     * guarantee them to follow semver. Use them at your own risk!
+     * @static
+     * @private
+     * @type {Object}
+     * @deprecated since version 1.8
+     * @member Utils
+     * @memberof Popper
+     */
+
+  }]);
+  return Popper;
+}();
+
+/**
+ * The `referenceObject` is an object that provides an interface compatible with Popper.js
+ * and lets you use it as replacement of a real DOM node.<br />
+ * You can use this method to position a popper relatively to a set of coordinates
+ * in case you don't have a DOM node to use as reference.
+ *
+ * ```
+ * new Popper(referenceObject, popperNode);
+ * ```
+ *
+ * NB: This feature isn't supported in Internet Explorer 10
+ * @name referenceObject
+ * @property {Function} data.getBoundingClientRect
+ * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
+ * @property {number} data.clientWidth
+ * An ES6 getter that will return the width of the virtual reference element.
+ * @property {number} data.clientHeight
+ * An ES6 getter that will return the height of the virtual reference element.
+ */
+
+
+Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
+Popper.placements = placements;
+Popper.Defaults = Defaults;
+
+export default Popper;
+//# sourceMappingURL=popper.js.map
diff --git a/dist/esm/popper.js.map b/dist/esm/popper.js.map
new file mode 100644
index 0000000..d3ae302
--- /dev/null
+++ b/dist/esm/popper.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.js","sources":["../../src/utils/debounce.js","../../src/utils/isFunction.js","../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/isIE10.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/runModifiers.js","../../src/methods/update.js","../../src/utils/isModifierEnabled.js","../../src/utils/getSupportedPropertyName.js","../../src/methods/destroy.js","../../src/utils/getWindow.js","../../src/utils/setupEventListeners.js","../../src/methods/enableEventListeners.js","../../src/utils/removeEventListeners.js","../../src/methods/disableEventListeners.js","../../src/utils/isNumeric.js","../../src/utils/setStyles.js","../../src/utils/setAttributes.js","../../src/modifiers/applyStyle.js","../../src/modifiers/computeStyle.js","../../src/utils/isModifierRequired.js","../../src/modifiers/arrow.js","../../src/utils/getOppositeVariation.js","../../src/methods/placements.js","../../src/utils/clockwise.js","../../src/modifiers/flip.js","../../src/modifiers/keepTogether.js","../../src/modifiers/offset.js","../../src/modifiers/preventOverflow.js","../../src/modifiers/shift.js","../../src/modifiers/hide.js","../../src/modifiers/inner.js","../../src/modifiers/index.js","../../src/methods/defaults.js","../../src/index.js"],"sourcesContent":["const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n  data.offsets.popper.position = 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroy the popper\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicity asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper.\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n  reference,\n  popper,\n  options,\n  modifierOptions,\n  state\n) {\n  // compute reference element offsets\n  const referenceOffsets = getReferenceOffsets(state, popper, reference);\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  const placement = computeAutoPlacement(\n    options.placement,\n    referenceOffsets,\n    popper,\n    reference,\n    options.modifiers.flip.boundariesElement,\n    options.modifiers.flip.padding\n  );\n\n  popper.setAttribute('x-placement', placement);\n\n  // Apply `position` to popper before anything else because\n  // without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: 'absolute' });\n\n  return options;\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  // floor sides to avoid blurry text\n  const offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right),\n  };\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjuction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.<br />\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br />\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-right` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n  'auto-start',\n  'auto',\n  'auto-end',\n  'top-start',\n  'top',\n  'top-end',\n  'right-start',\n  'right',\n  'right-end',\n  'bottom-end',\n  'bottom',\n  'bottom-start',\n  'left-end',\n  'left',\n  'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    const flippedVariation =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement\n  );\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side = ['left', 'top'].indexOf(placement) !== -1\n      ? 'primary'\n      : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     */\n    boundariesElement: 'viewport',\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overriden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param 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diff --git a/dist/esm/popper.min.js b/dist/esm/popper.min.js
new file mode 100644
index 0000000..0daa06d
--- /dev/null
+++ b/dist/esm/popper.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2017
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
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n=e.placement.split('-')[0],r=e.offsets,p=r.popper,s=r.reference,d=-1!==['left','right'].indexOf(n),l=d?'height':'width',f=d?'Top':'Left',m=f.toLowerCase(),h=d?'left':'top',c=d?'bottom':'right',g=I(i)[l];s[c]-g<p[m]&&(e.offsets.popper[m]-=p[m]-(s[c]-g)),s[m]+g>p[c]&&(e.offsets.popper[m]+=s[m]+g-p[c]),e.offsets.popper=D(e.offsets.popper);var u=s[m]+s[l]/2-g/2,b=a(e.instance.popper),w=parseFloat(b['margin'+f],10),y=parseFloat(b['border'+f+'Width'],10),E=u-e.offsets.popper[m]-w-y;return E=Math.max(Math.min(p[l]-g,E),0),e.arrowElement=i,e.offsets.arrow=(o={},S(o,m,Math.round(E)),S(o,h,''),o),e}function pe(e){if('end'===e)return'start';return'start'===e?'end':e}var se=['auto-start','auto','auto-end','top-start','top','top-end','right-start','right','right-end','bottom-end','bottom','bottom-start','left-end','left','left-start'],de=se.slice(3);function ae(e){var t=1<arguments.length&&arguments[1]!==void 0&&arguments[1],o=de.indexOf(e),i=de.slice(o+1).concat(de.slice(0,o));return 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r=this.options.eventsEnabled;r&&this.enableEventListeners(),this.state.eventsEnabled=r}return L(e,[{key:'update',value:function(){return K.call(this)}},{key:'destroy',value:function(){return V.call(this)}},{key:'enableEventListeners',value:function(){return X.call(this)}},{key:'disableEventListeners',value:function(){return Q.call(this)}}]),e}();Oe.Utils=('undefined'==typeof window?global:window).PopperUtils,Oe.placements=se,Oe.Defaults=ve;export default Oe;
+//# sourceMappingURL=popper.min.js.map
diff --git a/dist/esm/popper.min.js.map b/dist/esm/popper.min.js.map
new file mode 100644
index 0000000..2652c1a
--- /dev/null
+++ b/dist/esm/popper.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.min.js","sources":["../../src/utils/debounce.js","../../src/utils/isFunction.js","../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/isIE10.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/runModifiers.js","../../src/methods/update.js","../../src/utils/isModifierEnabled.js","../../src/utils/getSupportedPropertyName.js","../../src/methods/destroy.js","../../src/utils/getWindow.js","../../src/utils/setupEventListeners.js","../../src/methods/enableEventListeners.js","../../src/utils/removeEventListeners.js","../../src/methods/disableEventListeners.js","../../src/utils/isNumeric.js","../../src/utils/setStyles.js","../../src/utils/setAttributes.js","../../src/modifiers/applyStyle.js","../../src/modifiers/computeStyle.js","../../src/utils/isModifierRequired.js","../../src/modifiers/arrow.js","../../src/utils/getOppositeVariation.js","../../src/methods/placements.js","../../src/utils/clockwise.js","../../src/modifiers/flip.js","../../src/modifiers/keepTogether.js","../../src/modifiers/offset.js","../../src/modifiers/preventOverflow.js","../../src/modifiers/shift.js","../../src/modifiers/hide.js","../../src/modifiers/inner.js","../../src/modifiers/index.js","../../src/methods/defaults.js","../../src/index.js"],"sourcesContent":["const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n  data.offsets.popper.position = 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroy the popper\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicity asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper.\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n  reference,\n  popper,\n  options,\n  modifierOptions,\n  state\n) {\n  // compute reference element offsets\n  const referenceOffsets = getReferenceOffsets(state, popper, reference);\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  const placement = computeAutoPlacement(\n    options.placement,\n    referenceOffsets,\n    popper,\n    reference,\n    options.modifiers.flip.boundariesElement,\n    options.modifiers.flip.padding\n  );\n\n  popper.setAttribute('x-placement', placement);\n\n  // Apply `position` to popper before anything else because\n  // without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: 'absolute' });\n\n  return options;\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  // floor sides to avoid blurry text\n  const offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right),\n  };\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjuction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.<br />\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br />\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-right` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n  'auto-start',\n  'auto',\n  'auto-end',\n  'top-start',\n  'top',\n  'top-end',\n  'right-start',\n  'right',\n  'right-end',\n  'bottom-end',\n  'bottom',\n  'bottom-start',\n  'left-end',\n  'left',\n  'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    const flippedVariation =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement\n  );\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side = ['left', 'top'].indexOf(placement) !== -1\n      ? 'primary'\n      : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     */\n    boundariesElement: 'viewport',\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overriden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper\n   * @param {HTMLElement} popper - The HTML element used as popper.\n   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n   * @return {Object} instance - The generated Popper.js instance\n   */\n  constructor(reference, popper, options = {}) {\n    // make update() debounced, so that it only runs at most once-per-tick\n    this.update = debounce(this.update.bind(this));\n\n    // with {} we create a new object with the options inside it\n    this.options = { ...Popper.Defaults, ...options };\n\n    // init state\n    this.state = {\n      isDestroyed: false,\n      isCreated: false,\n      scrollParents: [],\n    };\n\n    // get reference and popper elements (allow jQuery wrappers)\n    this.reference = reference && reference.jquery ? reference[0] : reference;\n    this.popper = popper && popper.jquery ? popper[0] : popper;\n\n    // Deep merge modifiers options\n    this.options.modifiers = {};\n    Object.keys({\n      ...Popper.Defaults.modifiers,\n      ...options.modifiers,\n    }).forEach(name => {\n      this.options.modifiers[name] = {\n        // If it's a built-in modifier, use it as base\n        ...(Popper.Defaults.modifiers[name] || {}),\n        // If there are custom options, override and merge with default ones\n        ...(options.modifiers ? options.modifiers[name] : {}),\n      };\n    });\n\n    // Refactoring modifiers' list (Object => Array)\n    this.modifiers = Object.keys(this.options.modifiers)\n      .map(name => ({\n        name,\n        ...this.options.modifiers[name],\n      }))\n      // sort the modifiers by order\n      .sort((a, b) => a.order - b.order);\n\n    // modifiers have the ability to execute arbitrary code when Popper.js get inited\n    // such code is executed in the same order of its modifier\n    // they could add new properties to their options configuration\n    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n    this.modifiers.forEach(modifierOptions => {\n      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n        modifierOptions.onLoad(\n          this.reference,\n          this.popper,\n          this.options,\n          modifierOptions,\n          this.state\n        );\n      }\n    });\n\n    // fire the first update to position the popper in the right place\n    this.update();\n\n    const eventsEnabled = this.options.eventsEnabled;\n    if (eventsEnabled) {\n      // setup event listeners, they will take care of update the position in specific situations\n      this.enableEventListeners();\n    }\n\n    this.state.eventsEnabled = eventsEnabled;\n  }\n\n  // We can't use class properties because they don't get listed in the\n  // class prototype and break stuff like Sinon stubs\n  update() {\n    return update.call(this);\n  }\n  destroy() {\n    return destroy.call(this);\n  }\n  enableEventListeners() {\n    return enableEventListeners.call(this);\n  }\n  disableEventListeners() {\n    return disableEventListeners.call(this);\n  }\n\n  /**\n   * Schedule an update, it will run on the next UI update available\n   * @method scheduleUpdate\n   * @memberof Popper\n   */\n  scheduleUpdate = () => requestAnimationFrame(this.update);\n\n  /**\n   * Collection of utilities useful when writing custom modifiers.\n   * Starting from version 1.7, this method is available only if you\n   * include `popper-utils.js` before `popper.js`.\n   *\n   * **DEPRECATION**: This way to access PopperUtils is deprecated\n   * and will be removed in v2! Use the PopperUtils module directly instead.\n   * Due to the high instability of the methods contained in Utils, we can't\n   * guarantee them to follow semver. Use them at your own risk!\n   * @static\n   * @private\n   * @type {Object}\n   * @deprecated since version 1.8\n   * @member Utils\n   * @memberof Popper\n   */\n  static Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\n\n  static placements = placements;\n\n  static Defaults = Defaults;\n}\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.<br />\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter 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\ No newline at end of file
diff --git a/dist/popper-utils.js b/dist/popper-utils.js
new file mode 100644
index 0000000..1ab9470
--- /dev/null
+++ b/dist/popper-utils.js
@@ -0,0 +1,1001 @@
+/**!
+ * @fileOverview Kickass library to create and place poppers near their reference elements.
+ * @version 1.12.9
+ * @license
+ * Copyright (c) 2016 Federico Zivolo and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+/**
+ * Get CSS computed property of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Eement} element
+ * @argument {String} property
+ */
+function getStyleComputedProperty(element, property) {
+  if (element.nodeType !== 1) {
+    return [];
+  }
+  // NOTE: 1 DOM access here
+  const css = getComputedStyle(element, null);
+  return property ? css[property] : css;
+}
+
+/**
+ * Returns the parentNode or the host of the element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} parent
+ */
+function getParentNode(element) {
+  if (element.nodeName === 'HTML') {
+    return element;
+  }
+  return element.parentNode || element.host;
+}
+
+/**
+ * Returns the scrolling parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} scroll parent
+ */
+function getScrollParent(element) {
+  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
+  if (!element) {
+    return document.body;
+  }
+
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
+  // Firefox want us to check `-x` and `-y` variations as well
+  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);
+  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
+    return element;
+  }
+
+  return getScrollParent(getParentNode(element));
+}
+
+/**
+ * Returns the offset parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} offset parent
+ */
+function getOffsetParent(element) {
+  // NOTE: 1 DOM access here
+  const offsetParent = element && element.offsetParent;
+  const nodeName = offsetParent && offsetParent.nodeName;
+
+  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
+    return document.documentElement;
+  }
+
+  // .offsetParent will return the closest TD or TABLE in case
+  // no offsetParent is present, I hate this job...
+  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+    return getOffsetParent(offsetParent);
+  }
+
+  return offsetParent;
+}
+
+function isOffsetContainer(element) {
+  const { nodeName } = element;
+  if (nodeName === 'BODY') {
+    return false;
+  }
+  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
+}
+
+/**
+ * Finds the root node (document, shadowDOM root) of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} node
+ * @returns {Element} root node
+ */
+function getRoot(node) {
+  if (node.parentNode !== null) {
+    return getRoot(node.parentNode);
+  }
+
+  return node;
+}
+
+/**
+ * Finds the offset parent common to the two provided nodes
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element1
+ * @argument {Element} element2
+ * @returns {Element} common offset parent
+ */
+function findCommonOffsetParent(element1, element2) {
+  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
+  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
+    return document.documentElement;
+  }
+
+  // Here we make sure to give as "start" the element that comes first in the DOM
+  const order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
+  const start = order ? element1 : element2;
+  const end = order ? element2 : element1;
+
+  // Get common ancestor container
+  const range = document.createRange();
+  range.setStart(start, 0);
+  range.setEnd(end, 0);
+  const { commonAncestorContainer } = range;
+
+  // Both nodes are inside #document
+  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
+    if (isOffsetContainer(commonAncestorContainer)) {
+      return commonAncestorContainer;
+    }
+
+    return getOffsetParent(commonAncestorContainer);
+  }
+
+  // one of the nodes is inside shadowDOM, find which one
+  const element1root = getRoot(element1);
+  if (element1root.host) {
+    return findCommonOffsetParent(element1root.host, element2);
+  } else {
+    return findCommonOffsetParent(element1, getRoot(element2).host);
+  }
+}
+
+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+function getScroll(element, side = 'top') {
+  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  const nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    const html = element.ownerDocument.documentElement;
+    const scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}
+
+/*
+ * Sum or subtract the element scroll values (left and top) from a given rect object
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} rect - Rect object you want to change
+ * @param {HTMLElement} element - The element from the function reads the scroll values
+ * @param {Boolean} subtract - set to true if you want to subtract the scroll values
+ * @return {Object} rect - The modifier rect object
+ */
+function includeScroll(rect, element, subtract = false) {
+  const scrollTop = getScroll(element, 'top');
+  const scrollLeft = getScroll(element, 'left');
+  const modifier = subtract ? -1 : 1;
+  rect.top += scrollTop * modifier;
+  rect.bottom += scrollTop * modifier;
+  rect.left += scrollLeft * modifier;
+  rect.right += scrollLeft * modifier;
+  return rect;
+}
+
+/*
+ * Helper to detect borders of a given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {CSSStyleDeclaration} styles
+ * Result of `getStyleComputedProperty` on the given element
+ * @param {String} axis - `x` or `y`
+ * @return {number} borders - The borders size of the given axis
+ */
+
+function getBordersSize(styles, axis) {
+  const sideA = axis === 'x' ? 'Left' : 'Top';
+  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';
+
+  return parseFloat(styles[`border${sideA}Width`], 10) + parseFloat(styles[`border${sideB}Width`], 10);
+}
+
+/**
+ * Tells if you are running Internet Explorer 10
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean} isIE10
+ */
+let isIE10 = undefined;
+
+var isIE10$1 = function () {
+  if (isIE10 === undefined) {
+    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
+  }
+  return isIE10;
+};
+
+function getSize(axis, body, html, computedStyle) {
+  return Math.max(body[`offset${axis}`], body[`scroll${axis}`], html[`client${axis}`], html[`offset${axis}`], html[`scroll${axis}`], isIE10$1() ? html[`offset${axis}`] + computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] + computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`] : 0);
+}
+
+function getWindowSizes() {
+  const body = document.body;
+  const html = document.documentElement;
+  const computedStyle = isIE10$1() && getComputedStyle(html);
+
+  return {
+    height: getSize('Height', body, html, computedStyle),
+    width: getSize('Width', body, html, computedStyle)
+  };
+}
+
+var _extends = Object.assign || function (target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+
+  return target;
+};
+
+/**
+ * Given element offsets, generate an output similar to getBoundingClientRect
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} offsets
+ * @returns {Object} ClientRect like output
+ */
+function getClientRect(offsets) {
+  return _extends({}, offsets, {
+    right: offsets.left + offsets.width,
+    bottom: offsets.top + offsets.height
+  });
+}
+
+/**
+ * Get bounding client rect of given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} element
+ * @return {Object} client rect
+ */
+function getBoundingClientRect(element) {
+  let rect = {};
+
+  // IE10 10 FIX: Please, don't ask, the element isn't
+  // considered in DOM in some circumstances...
+  // This isn't reproducible in IE10 compatibility mode of IE11
+  if (isIE10$1()) {
+    try {
+      rect = element.getBoundingClientRect();
+      const scrollTop = getScroll(element, 'top');
+      const scrollLeft = getScroll(element, 'left');
+      rect.top += scrollTop;
+      rect.left += scrollLeft;
+      rect.bottom += scrollTop;
+      rect.right += scrollLeft;
+    } catch (err) {}
+  } else {
+    rect = element.getBoundingClientRect();
+  }
+
+  const result = {
+    left: rect.left,
+    top: rect.top,
+    width: rect.right - rect.left,
+    height: rect.bottom - rect.top
+  };
+
+  // subtract scrollbar size from sizes
+  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
+  const width = sizes.width || element.clientWidth || result.right - result.left;
+  const height = sizes.height || element.clientHeight || result.bottom - result.top;
+
+  let horizScrollbar = element.offsetWidth - width;
+  let vertScrollbar = element.offsetHeight - height;
+
+  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
+  // we make this check conditional for performance reasons
+  if (horizScrollbar || vertScrollbar) {
+    const styles = getStyleComputedProperty(element);
+    horizScrollbar -= getBordersSize(styles, 'x');
+    vertScrollbar -= getBordersSize(styles, 'y');
+
+    result.width -= horizScrollbar;
+    result.height -= vertScrollbar;
+  }
+
+  return getClientRect(result);
+}
+
+function getOffsetRectRelativeToArbitraryNode(children, parent) {
+  const isIE10 = isIE10$1();
+  const isHTML = parent.nodeName === 'HTML';
+  const childrenRect = getBoundingClientRect(children);
+  const parentRect = getBoundingClientRect(parent);
+  const scrollParent = getScrollParent(children);
+
+  const styles = getStyleComputedProperty(parent);
+  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);
+  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
+
+  let offsets = getClientRect({
+    top: childrenRect.top - parentRect.top - borderTopWidth,
+    left: childrenRect.left - parentRect.left - borderLeftWidth,
+    width: childrenRect.width,
+    height: childrenRect.height
+  });
+  offsets.marginTop = 0;
+  offsets.marginLeft = 0;
+
+  // Subtract margins of documentElement in case it's being used as parent
+  // we do this only on HTML because it's the only element that behaves
+  // differently when margins are applied to it. The margins are included in
+  // the box of the documentElement, in the other cases not.
+  if (!isIE10 && isHTML) {
+    const marginTop = parseFloat(styles.marginTop, 10);
+    const marginLeft = parseFloat(styles.marginLeft, 10);
+
+    offsets.top -= borderTopWidth - marginTop;
+    offsets.bottom -= borderTopWidth - marginTop;
+    offsets.left -= borderLeftWidth - marginLeft;
+    offsets.right -= borderLeftWidth - marginLeft;
+
+    // Attach marginTop and marginLeft because in some circumstances we may need them
+    offsets.marginTop = marginTop;
+    offsets.marginLeft = marginLeft;
+  }
+
+  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
+    offsets = includeScroll(offsets, parent);
+  }
+
+  return offsets;
+}
+
+function getViewportOffsetRectRelativeToArtbitraryNode(element) {
+  const html = element.ownerDocument.documentElement;
+  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
+  const width = Math.max(html.clientWidth, window.innerWidth || 0);
+  const height = Math.max(html.clientHeight, window.innerHeight || 0);
+
+  const scrollTop = getScroll(html);
+  const scrollLeft = getScroll(html, 'left');
+
+  const offset = {
+    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
+    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
+    width,
+    height
+  };
+
+  return getClientRect(offset);
+}
+
+/**
+ * Check if the given element is fixed or is inside a fixed parent
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {Element} customContainer
+ * @returns {Boolean} answer to "isFixed?"
+ */
+function isFixed(element) {
+  const nodeName = element.nodeName;
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    return false;
+  }
+  if (getStyleComputedProperty(element, 'position') === 'fixed') {
+    return true;
+  }
+  return isFixed(getParentNode(element));
+}
+
+/**
+ * Computed the boundaries limits and return them
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} popper
+ * @param {HTMLElement} reference
+ * @param {number} padding
+ * @param {HTMLElement} boundariesElement - Element used to define the boundaries
+ * @returns {Object} Coordinates of the boundaries
+ */
+function getBoundaries(popper, reference, padding, boundariesElement) {
+  // NOTE: 1 DOM access here
+  let boundaries = { top: 0, left: 0 };
+  const offsetParent = findCommonOffsetParent(popper, reference);
+
+  // Handle viewport case
+  if (boundariesElement === 'viewport') {
+    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
+  } else {
+    // Handle other cases based on DOM element used as boundaries
+    let boundariesNode;
+    if (boundariesElement === 'scrollParent') {
+      boundariesNode = getScrollParent(getParentNode(reference));
+      if (boundariesNode.nodeName === 'BODY') {
+        boundariesNode = popper.ownerDocument.documentElement;
+      }
+    } else if (boundariesElement === 'window') {
+      boundariesNode = popper.ownerDocument.documentElement;
+    } else {
+      boundariesNode = boundariesElement;
+    }
+
+    const offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
+
+    // In case of HTML, we need a different computation
+    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
+      const { height, width } = getWindowSizes();
+      boundaries.top += offsets.top - offsets.marginTop;
+      boundaries.bottom = height + offsets.top;
+      boundaries.left += offsets.left - offsets.marginLeft;
+      boundaries.right = width + offsets.left;
+    } else {
+      // for all the other DOM elements, this one is good
+      boundaries = offsets;
+    }
+  }
+
+  // Add paddings
+  boundaries.left += padding;
+  boundaries.top += padding;
+  boundaries.right -= padding;
+  boundaries.bottom -= padding;
+
+  return boundaries;
+}
+
+function getArea({ width, height }) {
+  return width * height;
+}
+
+/**
+ * Utility used to transform the `auto` placement to the placement with more
+ * available space.
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement, padding = 0) {
+  if (placement.indexOf('auto') === -1) {
+    return placement;
+  }
+
+  const boundaries = getBoundaries(popper, reference, padding, boundariesElement);
+
+  const rects = {
+    top: {
+      width: boundaries.width,
+      height: refRect.top - boundaries.top
+    },
+    right: {
+      width: boundaries.right - refRect.right,
+      height: boundaries.height
+    },
+    bottom: {
+      width: boundaries.width,
+      height: boundaries.bottom - refRect.bottom
+    },
+    left: {
+      width: refRect.left - boundaries.left,
+      height: boundaries.height
+    }
+  };
+
+  const sortedAreas = Object.keys(rects).map(key => _extends({
+    key
+  }, rects[key], {
+    area: getArea(rects[key])
+  })).sort((a, b) => b.area - a.area);
+
+  const filteredAreas = sortedAreas.filter(({ width, height }) => width >= popper.clientWidth && height >= popper.clientHeight);
+
+  const computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
+
+  const variation = placement.split('-')[1];
+
+  return computedPlacement + (variation ? `-${variation}` : '');
+}
+
+const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
+const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
+let timeoutDuration = 0;
+for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {
+  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
+    timeoutDuration = 1;
+    break;
+  }
+}
+
+function microtaskDebounce(fn) {
+  let called = false;
+  return () => {
+    if (called) {
+      return;
+    }
+    called = true;
+    window.Promise.resolve().then(() => {
+      called = false;
+      fn();
+    });
+  };
+}
+
+function taskDebounce(fn) {
+  let scheduled = false;
+  return () => {
+    if (!scheduled) {
+      scheduled = true;
+      setTimeout(() => {
+        scheduled = false;
+        fn();
+      }, timeoutDuration);
+    }
+  };
+}
+
+const supportsMicroTasks = isBrowser && window.Promise;
+
+/**
+* Create a debounced version of a method, that's asynchronously deferred
+* but called in the minimum time possible.
+*
+* @method
+* @memberof Popper.Utils
+* @argument {Function} fn
+* @returns {Function}
+*/
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
+
+/**
+ * Mimics the `find` method of Array
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function find(arr, check) {
+  // use native find if supported
+  if (Array.prototype.find) {
+    return arr.find(check);
+  }
+
+  // use `filter` to obtain the same behavior of `find`
+  return arr.filter(check)[0];
+}
+
+/**
+ * Return the index of the matching object
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function findIndex(arr, prop, value) {
+  // use native findIndex if supported
+  if (Array.prototype.findIndex) {
+    return arr.findIndex(cur => cur[prop] === value);
+  }
+
+  // use `find` + `indexOf` if `findIndex` isn't supported
+  const match = find(arr, obj => obj[prop] === value);
+  return arr.indexOf(match);
+}
+
+/**
+ * Get the position of the given element, relative to its offset parent
+ * @method
+ * @memberof Popper.Utils
+ * @param {Element} element
+ * @return {Object} position - Coordinates of the element and its `scrollTop`
+ */
+function getOffsetRect(element) {
+  let elementRect;
+  if (element.nodeName === 'HTML') {
+    const { width, height } = getWindowSizes();
+    elementRect = {
+      width,
+      height,
+      left: 0,
+      top: 0
+    };
+  } else {
+    elementRect = {
+      width: element.offsetWidth,
+      height: element.offsetHeight,
+      left: element.offsetLeft,
+      top: element.offsetTop
+    };
+  }
+
+  // position
+  return getClientRect(elementRect);
+}
+
+/**
+ * Get the outer sizes of the given element (offset size + margins)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Object} object containing width and height properties
+ */
+function getOuterSizes(element) {
+  const styles = getComputedStyle(element);
+  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
+  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  const result = {
+    width: element.offsetWidth + y,
+    height: element.offsetHeight + x
+  };
+  return result;
+}
+
+/**
+ * Get the opposite placement of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement
+ * @returns {String} flipped placement
+ */
+function getOppositePlacement(placement) {
+  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);
+}
+
+/**
+ * Get offsets to the popper
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} position - CSS position the Popper will get applied
+ * @param {HTMLElement} popper - the popper element
+ * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
+ * @param {String} placement - one of the valid placement options
+ * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
+ */
+function getPopperOffsets(popper, referenceOffsets, placement) {
+  placement = placement.split('-')[0];
+
+  // Get popper node sizes
+  const popperRect = getOuterSizes(popper);
+
+  // Add position, width and height to our offsets object
+  const popperOffsets = {
+    width: popperRect.width,
+    height: popperRect.height
+  };
+
+  // depending by the popper placement we have to compute its offsets slightly differently
+  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;
+  const mainSide = isHoriz ? 'top' : 'left';
+  const secondarySide = isHoriz ? 'left' : 'top';
+  const measurement = isHoriz ? 'height' : 'width';
+  const secondaryMeasurement = !isHoriz ? 'height' : 'width';
+
+  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
+  if (placement === secondarySide) {
+    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
+  } else {
+    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
+  }
+
+  return popperOffsets;
+}
+
+/**
+ * Get offsets to the reference element
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} state
+ * @param {Element} popper - the popper element
+ * @param {Element} reference - the reference element (the popper will be relative to this)
+ * @returns {Object} An object containing the offsets which will be applied to the popper
+ */
+function getReferenceOffsets(state, popper, reference) {
+  const commonOffsetParent = findCommonOffsetParent(popper, reference);
+  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
+}
+
+/**
+ * Get the prefixed supported property name
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} property (camelCase)
+ * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
+ */
+function getSupportedPropertyName(property) {
+  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
+  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);
+
+  for (let i = 0; i < prefixes.length - 1; i++) {
+    const prefix = prefixes[i];
+    const toCheck = prefix ? `${prefix}${upperProp}` : property;
+    if (typeof document.body.style[toCheck] !== 'undefined') {
+      return toCheck;
+    }
+  }
+  return null;
+}
+
+/**
+ * Check if the given variable is a function
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Any} functionToCheck - variable to check
+ * @returns {Boolean} answer to: is a function?
+ */
+function isFunction(functionToCheck) {
+  const getType = {};
+  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+}
+
+/**
+ * Helper used to know if the given modifier is enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean}
+ */
+function isModifierEnabled(modifiers, modifierName) {
+  return modifiers.some(({ name, enabled }) => enabled && name === modifierName);
+}
+
+/**
+ * Helper used to know if the given modifier depends from another one.<br />
+ * It checks if the needed modifier is listed and enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @param {Array} modifiers - list of modifiers
+ * @param {String} requestingName - name of requesting modifier
+ * @param {String} requestedName - name of requested modifier
+ * @returns {Boolean}
+ */
+function isModifierRequired(modifiers, requestingName, requestedName) {
+  const requesting = find(modifiers, ({ name }) => name === requestingName);
+
+  const isRequired = !!requesting && modifiers.some(modifier => {
+    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
+  });
+
+  if (!isRequired) {
+    const requesting = `\`${requestingName}\``;
+    const requested = `\`${requestedName}\``;
+    console.warn(`${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`);
+  }
+  return isRequired;
+}
+
+/**
+ * Tells if a given input is a number
+ * @method
+ * @memberof Popper.Utils
+ * @param {*} input to check
+ * @return {Boolean}
+ */
+function isNumeric(n) {
+  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
+}
+
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  const ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
+/**
+ * Remove event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function removeEventListeners(reference, state) {
+  // Remove resize event listener on window
+  getWindow(reference).removeEventListener('resize', state.updateBound);
+
+  // Remove scroll event listener on scroll parents
+  state.scrollParents.forEach(target => {
+    target.removeEventListener('scroll', state.updateBound);
+  });
+
+  // Reset state
+  state.updateBound = null;
+  state.scrollParents = [];
+  state.scrollElement = null;
+  state.eventsEnabled = false;
+  return state;
+}
+
+/**
+ * Loop trough the list of modifiers and run them in order,
+ * each of them will then edit the data object.
+ * @method
+ * @memberof Popper.Utils
+ * @param {dataObject} data
+ * @param {Array} modifiers
+ * @param {String} ends - Optional modifier name used as stopper
+ * @returns {dataObject}
+ */
+function runModifiers(modifiers, data, ends) {
+  const modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
+
+  modifiersToRun.forEach(modifier => {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
+      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
+    }
+    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
+    if (modifier.enabled && isFunction(fn)) {
+      // Add properties to offsets to make them a complete clientRect object
+      // we do this before each modifier to make sure the previous one doesn't
+      // mess with these values
+      data.offsets.popper = getClientRect(data.offsets.popper);
+      data.offsets.reference = getClientRect(data.offsets.reference);
+
+      data = fn(data, modifier);
+    }
+  });
+
+  return data;
+}
+
+/**
+ * Set the attributes to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the attributes to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setAttributes(element, attributes) {
+  Object.keys(attributes).forEach(function (prop) {
+    const value = attributes[prop];
+    if (value !== false) {
+      element.setAttribute(prop, attributes[prop]);
+    } else {
+      element.removeAttribute(prop);
+    }
+  });
+}
+
+/**
+ * Set the style to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the style to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setStyles(element, styles) {
+  Object.keys(styles).forEach(prop => {
+    let unit = '';
+    // add unit if the value is numeric and is one of the following
+    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
+      unit = 'px';
+    }
+    element.style[prop] = styles[prop] + unit;
+  });
+}
+
+function attachToScrollParents(scrollParent, event, callback, scrollParents) {
+  const isBody = scrollParent.nodeName === 'BODY';
+  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
+  target.addEventListener(event, callback, { passive: true });
+
+  if (!isBody) {
+    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
+  }
+  scrollParents.push(target);
+}
+
+/**
+ * Setup needed event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function setupEventListeners(reference, options, state, updateBound) {
+  // Resize event listener on window
+  state.updateBound = updateBound;
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
+
+  // Scroll event listener on scroll parents
+  const scrollElement = getScrollParent(reference);
+  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
+  state.scrollElement = scrollElement;
+  state.eventsEnabled = true;
+
+  return state;
+}
+
+// This is here just for backward compatibility with versions lower than v1.10.3
+// you should import the utilities using named exports, if you want them all use:
+// ```
+// import * as PopperUtils from 'popper-utils';
+// ```
+// The default export will be removed in the next major version.
+var index = {
+  computeAutoPlacement,
+  debounce,
+  findIndex,
+  getBordersSize,
+  getBoundaries,
+  getBoundingClientRect,
+  getClientRect,
+  getOffsetParent,
+  getOffsetRect,
+  getOffsetRectRelativeToArbitraryNode,
+  getOuterSizes,
+  getParentNode,
+  getPopperOffsets,
+  getReferenceOffsets,
+  getScroll,
+  getScrollParent,
+  getStyleComputedProperty,
+  getSupportedPropertyName,
+  getWindowSizes,
+  isFixed,
+  isFunction,
+  isModifierEnabled,
+  isModifierRequired,
+  isNumeric,
+  removeEventListeners,
+  runModifiers,
+  setAttributes,
+  setStyles,
+  setupEventListeners
+};
+
+export { computeAutoPlacement, debounce, findIndex, getBordersSize, getBoundaries, getBoundingClientRect, getClientRect, getOffsetParent, getOffsetRect, getOffsetRectRelativeToArbitraryNode, getOuterSizes, getParentNode, getPopperOffsets, getReferenceOffsets, getScroll, getScrollParent, getStyleComputedProperty, getSupportedPropertyName, getWindowSizes, isFixed, isFunction, isModifierEnabled, isModifierRequired, isNumeric, removeEventListeners, runModifiers, setAttributes, setStyles, setupEventListeners };
+export default index;
+//# sourceMappingURL=popper-utils.js.map
diff --git a/dist/popper-utils.js.map b/dist/popper-utils.js.map
new file mode 100644
index 0000000..4d1defe
--- /dev/null
+++ b/dist/popper-utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-utils.js","sources":["../src/utils/getStyleComputedProperty.js","../src/utils/getParentNode.js","../src/utils/getScrollParent.js","../src/utils/getOffsetParent.js","../src/utils/isOffsetContainer.js","../src/utils/getRoot.js","../src/utils/findCommonOffsetParent.js","../src/utils/getScroll.js","../src/utils/includeScroll.js","../src/utils/getBordersSize.js","../src/utils/isIE10.js","../src/utils/getWindowSizes.js","../src/utils/getClientRect.js","../src/utils/getBoundingClientRect.js","../src/utils/getOffsetRectRelativeToArbitraryNode.js","../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../src/utils/isFixed.js","../src/utils/getBoundaries.js","../src/utils/computeAutoPlacement.js","../src/utils/debounce.js","../src/utils/find.js","../src/utils/findIndex.js","../src/utils/getOffsetRect.js","../src/utils/getOuterSizes.js","../src/utils/getOppositePlacement.js","../src/utils/getPopperOffsets.js","../src/utils/getReferenceOffsets.js","../src/utils/getSupportedPropertyName.js","../src/utils/isFunction.js","../src/utils/isModifierEnabled.js","../src/utils/isModifierRequired.js","../src/utils/isNumeric.js","../src/utils/getWindow.js","../src/utils/removeEventListeners.js","../src/utils/runModifiers.js","../src/utils/setAttributes.js","../src/utils/setStyles.js","../src/utils/setupEventListeners.js","../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n  let elementRect;\n  if (element.nodeName === 'HTML') {\n    const { width, height } = getWindowSizes();\n    elementRect = {\n      width,\n      height,\n      left: 0,\n      top: 0,\n    };\n  } else {\n    elementRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight,\n      left: element.offsetLeft,\n      top: element.offsetTop,\n    };\n  }\n\n  // position\n  return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from './isModifierEnabled';\nimport isModifierRequired from './isModifierRequired';\nimport isNumeric from './isNumeric';\nimport removeEventListeners from './removeEventListeners';\nimport runModifiers from './runModifiers';\nimport setAttributes from './setAttributes';\nimport setStyles from './setStyles';\nimport setupEventListeners from './setupEventListeners';\n\n/** @namespace Popper.Utils */\nexport {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  setupEventListeners,\n};\n\n// This is here just for backward compatibility with versions lower than v1.10.3\n// you should import the utilities using named exports, if you want them all use:\n// ```\n// import * as PopperUtils from 'popper-utils';\n// ```\n// The default export will be removed in the next major version.\nexport default {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  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\ No newline at end of file
diff --git a/dist/popper-utils.min.js b/dist/popper-utils.min.js
new file mode 100644
index 0000000..d3011d6
--- /dev/null
+++ b/dist/popper-utils.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2017
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
+ */function a(a,b){if(1!==a.nodeType)return[];const c=getComputedStyle(a,null);return b?c[b]:c}function b(a){return'HTML'===a.nodeName?a:a.parentNode||a.host}function c(d){if(!d)return document.body;switch(d.nodeName){case'HTML':case'BODY':return d.ownerDocument.body;case'#document':return d.body;}const{overflow:e,overflowX:f,overflowY:g}=a(d);return /(auto|scroll)/.test(e+g+f)?d:c(b(d))}function d(b){const c=b&&b.offsetParent,e=c&&c.nodeName;return e&&'BODY'!==e&&'HTML'!==e?-1!==['TD','TABLE'].indexOf(c.nodeName)&&'static'===a(c,'position')?d(c):c:b?b.ownerDocument.documentElement:document.documentElement}function e(a){const{nodeName:b}=a;return'BODY'!==b&&('HTML'===b||d(a.firstElementChild)===a)}function f(a){return null===a.parentNode?a:f(a.parentNode)}function g(a,b){if(!a||!a.nodeType||!b||!b.nodeType)return document.documentElement;const 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i=b.offsetWidth-f,k=b.offsetHeight-g;if(i||k){const c=a(b);i-=j(c,'x'),k-=j(c,'y'),d.width-=i,d.height-=k}return p(d)}function r(b,d){const e=l(),f='HTML'===d.nodeName,g=q(b),h=q(d),j=c(b),k=a(d),m=parseFloat(k.borderTopWidth,10),n=parseFloat(k.borderLeftWidth,10);let o=p({top:g.top-h.top-m,left:g.left-h.left-n,width:g.width,height:g.height});if(o.marginTop=0,o.marginLeft=0,!e&&f){const a=parseFloat(k.marginTop,10),b=parseFloat(k.marginLeft,10);o.top-=m-a,o.bottom-=m-a,o.left-=n-b,o.right-=n-b,o.marginTop=a,o.marginLeft=b}return(e?d.contains(j):d===j&&'BODY'!==j.nodeName)&&(o=i(o,d)),o}function s(a){var b=Math.max;const c=a.ownerDocument.documentElement,d=r(a,c),e=b(c.clientWidth,window.innerWidth||0),f=b(c.clientHeight,window.innerHeight||0),g=h(c),i=h(c,'left'),j={top:g-d.top+d.marginTop,left:i-d.left+d.marginLeft,width:e,height:f};return p(j)}function t(c){const d=c.nodeName;return'BODY'===d||'HTML'===d?!1:!('fixed'!==a(c,'position'))||t(b(c))}function u(a,d,e,f){let h={top:0,left:0};const i=g(a,d);if('viewport'===f)h=s(i);else{let e;'scrollParent'===f?(e=c(b(d)),'BODY'===e.nodeName&&(e=a.ownerDocument.documentElement)):'window'===f?e=a.ownerDocument.documentElement:e=f;const g=r(e,i);if('HTML'===e.nodeName&&!t(i)){const{height:a,width:b}=n();h.top+=g.top-g.marginTop,h.bottom=a+g.top,h.left+=g.left-g.marginLeft,h.right=b+g.left}else h=g}return h.left+=e,h.top+=e,h.right-=e,h.bottom-=e,h}function v({width:a,height:b}){return a*b}function w(a,b,c,d,e,f=0){if(-1===a.indexOf('auto'))return a;const g=u(c,d,f,e),h={top:{width:g.width,height:b.top-g.top},right:{width:g.right-b.right,height:g.height},bottom:{width:g.width,height:g.bottom-b.bottom},left:{width:b.left-g.left,height:g.height}},i=Object.keys(h).map((a)=>o({key:a},h[a],{area:v(h[a])})).sort((c,a)=>a.area-c.area),j=i.filter(({width:a,height:b})=>a>=c.clientWidth&&b>=c.clientHeight),k=0<j.length?j[0].key:i[0].key,l=a.split('-')[1];return k+(l?`-${l}`:'')}const x='undefined'!=typeof window&&'undefined'!=typeof document,y=['Edge','Trident','Firefox'];let z=0;for(let a=0;a<y.length;a+=1)if(x&&0<=navigator.userAgent.indexOf(y[a])){z=1;break}function A(a){let b=!1;return()=>{b||(b=!0,window.Promise.resolve().then(()=>{b=!1,a()}))}}function B(a){let b=!1;return()=>{b||(b=!0,setTimeout(()=>{b=!1,a()},z))}}const C=x&&window.Promise;var D=C?A:B;function E(a,b){return Array.prototype.find?a.find(b):a.filter(b)[0]}function F(a,b,c){if(Array.prototype.findIndex)return a.findIndex((a)=>a[b]===c);const d=E(a,(a)=>a[b]===c);return a.indexOf(d)}function G(a){let b;if('HTML'===a.nodeName){const{width:a,height:c}=n();b={width:a,height:c,left:0,top:0}}else b={width:a.offsetWidth,height:a.offsetHeight,left:a.offsetLeft,top:a.offsetTop};return p(b)}function H(a){const b=getComputedStyle(a),c=parseFloat(b.marginTop)+parseFloat(b.marginBottom),d=parseFloat(b.marginLeft)+parseFloat(b.marginRight),e={width:a.offsetWidth+d,height:a.offsetHeight+c};return e}function I(a){const b={left:'right',right:'left',bottom:'top',top:'bottom'};return a.replace(/left|right|bottom|top/g,(a)=>b[a])}function J(a,b,c){c=c.split('-')[0];const d=H(a),e={width:d.width,height:d.height},f=-1!==['right','left'].indexOf(c),g=f?'top':'left',h=f?'left':'top',i=f?'height':'width',j=f?'width':'height';return e[g]=b[g]+b[i]/2-d[i]/2,e[h]=c===h?b[h]-d[j]:b[I(h)],e}function K(a,b,c){const d=g(b,c);return r(c,d)}function L(a){const b=[!1,'ms','Webkit','Moz','O'],c=a.charAt(0).toUpperCase()+a.slice(1);for(let d=0;d<b.length-1;d++){const e=b[d],f=e?`${e}${c}`:a;if('undefined'!=typeof document.body.style[f])return f}return null}function M(a){return a&&'[object Function]'==={}.toString.call(a)}function N(a,b){return a.some(({name:a,enabled:c})=>c&&a===b)}function O(a,b,c){const d=E(a,({name:a})=>a===b),e=!!d&&a.some((a)=>a.name===c&&a.enabled&&a.order<d.order);if(!e){const a=`\`${b}\``,d=`\`${c}\``;console.warn(`${d} modifier is required by ${a} modifier in order to work, be sure to include it before ${a}!`)}return e}function P(a){return''!==a&&!isNaN(parseFloat(a))&&isFinite(a)}function Q(a){const b=a.ownerDocument;return b?b.defaultView:window}function R(a,b){return Q(a).removeEventListener('resize',b.updateBound),b.scrollParents.forEach((a)=>{a.removeEventListener('scroll',b.updateBound)}),b.updateBound=null,b.scrollParents=[],b.scrollElement=null,b.eventsEnabled=!1,b}function S(a,b,c){const d=void 0===c?a:a.slice(0,F(a,'name',c));return d.forEach((a)=>{a['function']&&console.warn('`modifier.function` is deprecated, use `modifier.fn`!');const c=a['function']||a.fn;a.enabled&&M(c)&&(b.offsets.popper=p(b.offsets.popper),b.offsets.reference=p(b.offsets.reference),b=c(b,a))}),b}function T(a,b){Object.keys(b).forEach(function(c){const d=b[c];!1===d?a.removeAttribute(c):a.setAttribute(c,b[c])})}function U(a,b){Object.keys(b).forEach((c)=>{let d='';-1!==['width','height','top','right','bottom','left'].indexOf(c)&&P(b[c])&&(d='px'),a.style[c]=b[c]+d})}function V(a,b,d,e){const f='BODY'===a.nodeName,g=f?a.ownerDocument.defaultView:a;g.addEventListener(b,d,{passive:!0}),f||V(c(g.parentNode),b,d,e),e.push(g)}function W(a,b,d,e){d.updateBound=e,Q(a).addEventListener('resize',d.updateBound,{passive:!0});const f=c(a);return V(f,'scroll',d.updateBound,d.scrollParents),d.scrollElement=f,d.eventsEnabled=!0,d}var X={computeAutoPlacement:w,debounce:D,findIndex:F,getBordersSize:j,getBoundaries:u,getBoundingClientRect:q,getClientRect:p,getOffsetParent:d,getOffsetRect:G,getOffsetRectRelativeToArbitraryNode:r,getOuterSizes:H,getParentNode:b,getPopperOffsets:J,getReferenceOffsets:K,getScroll:h,getScrollParent:c,getStyleComputedProperty:a,getSupportedPropertyName:L,getWindowSizes:n,isFixed:t,isFunction:M,isModifierEnabled:N,isModifierRequired:O,isNumeric:P,removeEventListeners:R,runModifiers:S,setAttributes:T,setStyles:U,setupEventListeners:W};export{w as computeAutoPlacement,D as debounce,F as findIndex,j as getBordersSize,u as getBoundaries,q as getBoundingClientRect,p as getClientRect,d as getOffsetParent,G as getOffsetRect,r as getOffsetRectRelativeToArbitraryNode,H as getOuterSizes,b as getParentNode,J as getPopperOffsets,K as getReferenceOffsets,h as getScroll,c as getScrollParent,a as getStyleComputedProperty,L as getSupportedPropertyName,n as getWindowSizes,t as isFixed,M as isFunction,N as isModifierEnabled,O as isModifierRequired,P as isNumeric,R as removeEventListeners,S as runModifiers,T as setAttributes,U as setStyles,W as setupEventListeners};export default X;
+//# sourceMappingURL=popper-utils.min.js.map
diff --git a/dist/popper-utils.min.js.map b/dist/popper-utils.min.js.map
new file mode 100644
index 0000000..4ed1964
--- /dev/null
+++ b/dist/popper-utils.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-utils.min.js","sources":["../src/utils/getStyleComputedProperty.js","../src/utils/getParentNode.js","../src/utils/getScrollParent.js","../src/utils/getOffsetParent.js","../src/utils/isOffsetContainer.js","../src/utils/getRoot.js","../src/utils/findCommonOffsetParent.js","../src/utils/getScroll.js","../src/utils/includeScroll.js","../src/utils/getBordersSize.js","../src/utils/isIE10.js","../src/utils/getWindowSizes.js","../src/utils/getClientRect.js","../src/utils/getBoundingClientRect.js","../src/utils/getOffsetRectRelativeToArbitraryNode.js","../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../src/utils/isFixed.js","../src/utils/getBoundaries.js","../src/utils/computeAutoPlacement.js","../src/utils/debounce.js","../src/utils/find.js","../src/utils/findIndex.js","../src/utils/getOffsetRect.js","../src/utils/getOuterSizes.js","../src/utils/getOppositePlacement.js","../src/utils/getPopperOffsets.js","../src/utils/getReferenceOffsets.js","../src/utils/getSupportedPropertyName.js","../src/utils/isFunction.js","../src/utils/isModifierEnabled.js","../src/utils/isModifierRequired.js","../src/utils/isNumeric.js","../src/utils/getWindow.js","../src/utils/removeEventListeners.js","../src/utils/runModifiers.js","../src/utils/setAttributes.js","../src/utils/setStyles.js","../src/utils/setupEventListeners.js","../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n  let elementRect;\n  if (element.nodeName === 'HTML') {\n    const { width, height } = getWindowSizes();\n    elementRect = {\n      width,\n      height,\n      left: 0,\n      top: 0,\n    };\n  } else {\n    elementRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight,\n      left: element.offsetLeft,\n      top: element.offsetTop,\n    };\n  }\n\n  // position\n  return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from 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\ No newline at end of file
diff --git a/dist/popper.js b/dist/popper.js
new file mode 100644
index 0000000..db69baa
--- /dev/null
+++ b/dist/popper.js
@@ -0,0 +1,2300 @@
+/**!
+ * @fileOverview Kickass library to create and place poppers near their reference elements.
+ * @version 1.12.9
+ * @license
+ * Copyright (c) 2016 Federico Zivolo and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
+const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
+let timeoutDuration = 0;
+for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {
+  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
+    timeoutDuration = 1;
+    break;
+  }
+}
+
+function microtaskDebounce(fn) {
+  let called = false;
+  return () => {
+    if (called) {
+      return;
+    }
+    called = true;
+    window.Promise.resolve().then(() => {
+      called = false;
+      fn();
+    });
+  };
+}
+
+function taskDebounce(fn) {
+  let scheduled = false;
+  return () => {
+    if (!scheduled) {
+      scheduled = true;
+      setTimeout(() => {
+        scheduled = false;
+        fn();
+      }, timeoutDuration);
+    }
+  };
+}
+
+const supportsMicroTasks = isBrowser && window.Promise;
+
+/**
+* Create a debounced version of a method, that's asynchronously deferred
+* but called in the minimum time possible.
+*
+* @method
+* @memberof Popper.Utils
+* @argument {Function} fn
+* @returns {Function}
+*/
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
+
+/**
+ * Check if the given variable is a function
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Any} functionToCheck - variable to check
+ * @returns {Boolean} answer to: is a function?
+ */
+function isFunction(functionToCheck) {
+  const getType = {};
+  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+}
+
+/**
+ * Get CSS computed property of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Eement} element
+ * @argument {String} property
+ */
+function getStyleComputedProperty(element, property) {
+  if (element.nodeType !== 1) {
+    return [];
+  }
+  // NOTE: 1 DOM access here
+  const css = getComputedStyle(element, null);
+  return property ? css[property] : css;
+}
+
+/**
+ * Returns the parentNode or the host of the element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} parent
+ */
+function getParentNode(element) {
+  if (element.nodeName === 'HTML') {
+    return element;
+  }
+  return element.parentNode || element.host;
+}
+
+/**
+ * Returns the scrolling parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} scroll parent
+ */
+function getScrollParent(element) {
+  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
+  if (!element) {
+    return document.body;
+  }
+
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
+  // Firefox want us to check `-x` and `-y` variations as well
+  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);
+  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
+    return element;
+  }
+
+  return getScrollParent(getParentNode(element));
+}
+
+/**
+ * Returns the offset parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} offset parent
+ */
+function getOffsetParent(element) {
+  // NOTE: 1 DOM access here
+  const offsetParent = element && element.offsetParent;
+  const nodeName = offsetParent && offsetParent.nodeName;
+
+  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
+    return document.documentElement;
+  }
+
+  // .offsetParent will return the closest TD or TABLE in case
+  // no offsetParent is present, I hate this job...
+  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+    return getOffsetParent(offsetParent);
+  }
+
+  return offsetParent;
+}
+
+function isOffsetContainer(element) {
+  const { nodeName } = element;
+  if (nodeName === 'BODY') {
+    return false;
+  }
+  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
+}
+
+/**
+ * Finds the root node (document, shadowDOM root) of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} node
+ * @returns {Element} root node
+ */
+function getRoot(node) {
+  if (node.parentNode !== null) {
+    return getRoot(node.parentNode);
+  }
+
+  return node;
+}
+
+/**
+ * Finds the offset parent common to the two provided nodes
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element1
+ * @argument {Element} element2
+ * @returns {Element} common offset parent
+ */
+function findCommonOffsetParent(element1, element2) {
+  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
+  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
+    return document.documentElement;
+  }
+
+  // Here we make sure to give as "start" the element that comes first in the DOM
+  const order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
+  const start = order ? element1 : element2;
+  const end = order ? element2 : element1;
+
+  // Get common ancestor container
+  const range = document.createRange();
+  range.setStart(start, 0);
+  range.setEnd(end, 0);
+  const { commonAncestorContainer } = range;
+
+  // Both nodes are inside #document
+  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
+    if (isOffsetContainer(commonAncestorContainer)) {
+      return commonAncestorContainer;
+    }
+
+    return getOffsetParent(commonAncestorContainer);
+  }
+
+  // one of the nodes is inside shadowDOM, find which one
+  const element1root = getRoot(element1);
+  if (element1root.host) {
+    return findCommonOffsetParent(element1root.host, element2);
+  } else {
+    return findCommonOffsetParent(element1, getRoot(element2).host);
+  }
+}
+
+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+function getScroll(element, side = 'top') {
+  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  const nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    const html = element.ownerDocument.documentElement;
+    const scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}
+
+/*
+ * Sum or subtract the element scroll values (left and top) from a given rect object
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} rect - Rect object you want to change
+ * @param {HTMLElement} element - The element from the function reads the scroll values
+ * @param {Boolean} subtract - set to true if you want to subtract the scroll values
+ * @return {Object} rect - The modifier rect object
+ */
+function includeScroll(rect, element, subtract = false) {
+  const scrollTop = getScroll(element, 'top');
+  const scrollLeft = getScroll(element, 'left');
+  const modifier = subtract ? -1 : 1;
+  rect.top += scrollTop * modifier;
+  rect.bottom += scrollTop * modifier;
+  rect.left += scrollLeft * modifier;
+  rect.right += scrollLeft * modifier;
+  return rect;
+}
+
+/*
+ * Helper to detect borders of a given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {CSSStyleDeclaration} styles
+ * Result of `getStyleComputedProperty` on the given element
+ * @param {String} axis - `x` or `y`
+ * @return {number} borders - The borders size of the given axis
+ */
+
+function getBordersSize(styles, axis) {
+  const sideA = axis === 'x' ? 'Left' : 'Top';
+  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';
+
+  return parseFloat(styles[`border${sideA}Width`], 10) + parseFloat(styles[`border${sideB}Width`], 10);
+}
+
+/**
+ * Tells if you are running Internet Explorer 10
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean} isIE10
+ */
+let isIE10 = undefined;
+
+var isIE10$1 = function () {
+  if (isIE10 === undefined) {
+    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
+  }
+  return isIE10;
+};
+
+function getSize(axis, body, html, computedStyle) {
+  return Math.max(body[`offset${axis}`], body[`scroll${axis}`], html[`client${axis}`], html[`offset${axis}`], html[`scroll${axis}`], isIE10$1() ? html[`offset${axis}`] + computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] + computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`] : 0);
+}
+
+function getWindowSizes() {
+  const body = document.body;
+  const html = document.documentElement;
+  const computedStyle = isIE10$1() && getComputedStyle(html);
+
+  return {
+    height: getSize('Height', body, html, computedStyle),
+    width: getSize('Width', body, html, computedStyle)
+  };
+}
+
+var _extends = Object.assign || function (target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+
+  return target;
+};
+
+/**
+ * Given element offsets, generate an output similar to getBoundingClientRect
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} offsets
+ * @returns {Object} ClientRect like output
+ */
+function getClientRect(offsets) {
+  return _extends({}, offsets, {
+    right: offsets.left + offsets.width,
+    bottom: offsets.top + offsets.height
+  });
+}
+
+/**
+ * Get bounding client rect of given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} element
+ * @return {Object} client rect
+ */
+function getBoundingClientRect(element) {
+  let rect = {};
+
+  // IE10 10 FIX: Please, don't ask, the element isn't
+  // considered in DOM in some circumstances...
+  // This isn't reproducible in IE10 compatibility mode of IE11
+  if (isIE10$1()) {
+    try {
+      rect = element.getBoundingClientRect();
+      const scrollTop = getScroll(element, 'top');
+      const scrollLeft = getScroll(element, 'left');
+      rect.top += scrollTop;
+      rect.left += scrollLeft;
+      rect.bottom += scrollTop;
+      rect.right += scrollLeft;
+    } catch (err) {}
+  } else {
+    rect = element.getBoundingClientRect();
+  }
+
+  const result = {
+    left: rect.left,
+    top: rect.top,
+    width: rect.right - rect.left,
+    height: rect.bottom - rect.top
+  };
+
+  // subtract scrollbar size from sizes
+  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
+  const width = sizes.width || element.clientWidth || result.right - result.left;
+  const height = sizes.height || element.clientHeight || result.bottom - result.top;
+
+  let horizScrollbar = element.offsetWidth - width;
+  let vertScrollbar = element.offsetHeight - height;
+
+  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
+  // we make this check conditional for performance reasons
+  if (horizScrollbar || vertScrollbar) {
+    const styles = getStyleComputedProperty(element);
+    horizScrollbar -= getBordersSize(styles, 'x');
+    vertScrollbar -= getBordersSize(styles, 'y');
+
+    result.width -= horizScrollbar;
+    result.height -= vertScrollbar;
+  }
+
+  return getClientRect(result);
+}
+
+function getOffsetRectRelativeToArbitraryNode(children, parent) {
+  const isIE10 = isIE10$1();
+  const isHTML = parent.nodeName === 'HTML';
+  const childrenRect = getBoundingClientRect(children);
+  const parentRect = getBoundingClientRect(parent);
+  const scrollParent = getScrollParent(children);
+
+  const styles = getStyleComputedProperty(parent);
+  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);
+  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
+
+  let offsets = getClientRect({
+    top: childrenRect.top - parentRect.top - borderTopWidth,
+    left: childrenRect.left - parentRect.left - borderLeftWidth,
+    width: childrenRect.width,
+    height: childrenRect.height
+  });
+  offsets.marginTop = 0;
+  offsets.marginLeft = 0;
+
+  // Subtract margins of documentElement in case it's being used as parent
+  // we do this only on HTML because it's the only element that behaves
+  // differently when margins are applied to it. The margins are included in
+  // the box of the documentElement, in the other cases not.
+  if (!isIE10 && isHTML) {
+    const marginTop = parseFloat(styles.marginTop, 10);
+    const marginLeft = parseFloat(styles.marginLeft, 10);
+
+    offsets.top -= borderTopWidth - marginTop;
+    offsets.bottom -= borderTopWidth - marginTop;
+    offsets.left -= borderLeftWidth - marginLeft;
+    offsets.right -= borderLeftWidth - marginLeft;
+
+    // Attach marginTop and marginLeft because in some circumstances we may need them
+    offsets.marginTop = marginTop;
+    offsets.marginLeft = marginLeft;
+  }
+
+  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
+    offsets = includeScroll(offsets, parent);
+  }
+
+  return offsets;
+}
+
+function getViewportOffsetRectRelativeToArtbitraryNode(element) {
+  const html = element.ownerDocument.documentElement;
+  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
+  const width = Math.max(html.clientWidth, window.innerWidth || 0);
+  const height = Math.max(html.clientHeight, window.innerHeight || 0);
+
+  const scrollTop = getScroll(html);
+  const scrollLeft = getScroll(html, 'left');
+
+  const offset = {
+    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
+    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
+    width,
+    height
+  };
+
+  return getClientRect(offset);
+}
+
+/**
+ * Check if the given element is fixed or is inside a fixed parent
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {Element} customContainer
+ * @returns {Boolean} answer to "isFixed?"
+ */
+function isFixed(element) {
+  const nodeName = element.nodeName;
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    return false;
+  }
+  if (getStyleComputedProperty(element, 'position') === 'fixed') {
+    return true;
+  }
+  return isFixed(getParentNode(element));
+}
+
+/**
+ * Computed the boundaries limits and return them
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} popper
+ * @param {HTMLElement} reference
+ * @param {number} padding
+ * @param {HTMLElement} boundariesElement - Element used to define the boundaries
+ * @returns {Object} Coordinates of the boundaries
+ */
+function getBoundaries(popper, reference, padding, boundariesElement) {
+  // NOTE: 1 DOM access here
+  let boundaries = { top: 0, left: 0 };
+  const offsetParent = findCommonOffsetParent(popper, reference);
+
+  // Handle viewport case
+  if (boundariesElement === 'viewport') {
+    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
+  } else {
+    // Handle other cases based on DOM element used as boundaries
+    let boundariesNode;
+    if (boundariesElement === 'scrollParent') {
+      boundariesNode = getScrollParent(getParentNode(reference));
+      if (boundariesNode.nodeName === 'BODY') {
+        boundariesNode = popper.ownerDocument.documentElement;
+      }
+    } else if (boundariesElement === 'window') {
+      boundariesNode = popper.ownerDocument.documentElement;
+    } else {
+      boundariesNode = boundariesElement;
+    }
+
+    const offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
+
+    // In case of HTML, we need a different computation
+    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
+      const { height, width } = getWindowSizes();
+      boundaries.top += offsets.top - offsets.marginTop;
+      boundaries.bottom = height + offsets.top;
+      boundaries.left += offsets.left - offsets.marginLeft;
+      boundaries.right = width + offsets.left;
+    } else {
+      // for all the other DOM elements, this one is good
+      boundaries = offsets;
+    }
+  }
+
+  // Add paddings
+  boundaries.left += padding;
+  boundaries.top += padding;
+  boundaries.right -= padding;
+  boundaries.bottom -= padding;
+
+  return boundaries;
+}
+
+function getArea({ width, height }) {
+  return width * height;
+}
+
+/**
+ * Utility used to transform the `auto` placement to the placement with more
+ * available space.
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement, padding = 0) {
+  if (placement.indexOf('auto') === -1) {
+    return placement;
+  }
+
+  const boundaries = getBoundaries(popper, reference, padding, boundariesElement);
+
+  const rects = {
+    top: {
+      width: boundaries.width,
+      height: refRect.top - boundaries.top
+    },
+    right: {
+      width: boundaries.right - refRect.right,
+      height: boundaries.height
+    },
+    bottom: {
+      width: boundaries.width,
+      height: boundaries.bottom - refRect.bottom
+    },
+    left: {
+      width: refRect.left - boundaries.left,
+      height: boundaries.height
+    }
+  };
+
+  const sortedAreas = Object.keys(rects).map(key => _extends({
+    key
+  }, rects[key], {
+    area: getArea(rects[key])
+  })).sort((a, b) => b.area - a.area);
+
+  const filteredAreas = sortedAreas.filter(({ width, height }) => width >= popper.clientWidth && height >= popper.clientHeight);
+
+  const computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
+
+  const variation = placement.split('-')[1];
+
+  return computedPlacement + (variation ? `-${variation}` : '');
+}
+
+/**
+ * Get offsets to the reference element
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} state
+ * @param {Element} popper - the popper element
+ * @param {Element} reference - the reference element (the popper will be relative to this)
+ * @returns {Object} An object containing the offsets which will be applied to the popper
+ */
+function getReferenceOffsets(state, popper, reference) {
+  const commonOffsetParent = findCommonOffsetParent(popper, reference);
+  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
+}
+
+/**
+ * Get the outer sizes of the given element (offset size + margins)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Object} object containing width and height properties
+ */
+function getOuterSizes(element) {
+  const styles = getComputedStyle(element);
+  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
+  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  const result = {
+    width: element.offsetWidth + y,
+    height: element.offsetHeight + x
+  };
+  return result;
+}
+
+/**
+ * Get the opposite placement of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement
+ * @returns {String} flipped placement
+ */
+function getOppositePlacement(placement) {
+  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);
+}
+
+/**
+ * Get offsets to the popper
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} position - CSS position the Popper will get applied
+ * @param {HTMLElement} popper - the popper element
+ * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
+ * @param {String} placement - one of the valid placement options
+ * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
+ */
+function getPopperOffsets(popper, referenceOffsets, placement) {
+  placement = placement.split('-')[0];
+
+  // Get popper node sizes
+  const popperRect = getOuterSizes(popper);
+
+  // Add position, width and height to our offsets object
+  const popperOffsets = {
+    width: popperRect.width,
+    height: popperRect.height
+  };
+
+  // depending by the popper placement we have to compute its offsets slightly differently
+  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;
+  const mainSide = isHoriz ? 'top' : 'left';
+  const secondarySide = isHoriz ? 'left' : 'top';
+  const measurement = isHoriz ? 'height' : 'width';
+  const secondaryMeasurement = !isHoriz ? 'height' : 'width';
+
+  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
+  if (placement === secondarySide) {
+    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
+  } else {
+    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
+  }
+
+  return popperOffsets;
+}
+
+/**
+ * Mimics the `find` method of Array
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function find(arr, check) {
+  // use native find if supported
+  if (Array.prototype.find) {
+    return arr.find(check);
+  }
+
+  // use `filter` to obtain the same behavior of `find`
+  return arr.filter(check)[0];
+}
+
+/**
+ * Return the index of the matching object
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function findIndex(arr, prop, value) {
+  // use native findIndex if supported
+  if (Array.prototype.findIndex) {
+    return arr.findIndex(cur => cur[prop] === value);
+  }
+
+  // use `find` + `indexOf` if `findIndex` isn't supported
+  const match = find(arr, obj => obj[prop] === value);
+  return arr.indexOf(match);
+}
+
+/**
+ * Loop trough the list of modifiers and run them in order,
+ * each of them will then edit the data object.
+ * @method
+ * @memberof Popper.Utils
+ * @param {dataObject} data
+ * @param {Array} modifiers
+ * @param {String} ends - Optional modifier name used as stopper
+ * @returns {dataObject}
+ */
+function runModifiers(modifiers, data, ends) {
+  const modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
+
+  modifiersToRun.forEach(modifier => {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
+      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
+    }
+    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
+    if (modifier.enabled && isFunction(fn)) {
+      // Add properties to offsets to make them a complete clientRect object
+      // we do this before each modifier to make sure the previous one doesn't
+      // mess with these values
+      data.offsets.popper = getClientRect(data.offsets.popper);
+      data.offsets.reference = getClientRect(data.offsets.reference);
+
+      data = fn(data, modifier);
+    }
+  });
+
+  return data;
+}
+
+/**
+ * Updates the position of the popper, computing the new offsets and applying
+ * the new style.<br />
+ * Prefer `scheduleUpdate` over `update` because of performance reasons.
+ * @method
+ * @memberof Popper
+ */
+function update() {
+  // if popper is destroyed, don't perform any further update
+  if (this.state.isDestroyed) {
+    return;
+  }
+
+  let data = {
+    instance: this,
+    styles: {},
+    arrowStyles: {},
+    attributes: {},
+    flipped: false,
+    offsets: {}
+  };
+
+  // compute reference element offsets
+  data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference);
+
+  // compute auto placement, store placement inside the data object,
+  // modifiers will be able to edit `placement` if needed
+  // and refer to originalPlacement to know the original value
+  data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);
+
+  // store the computed placement inside `originalPlacement`
+  data.originalPlacement = data.placement;
+
+  // compute the popper offsets
+  data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);
+  data.offsets.popper.position = 'absolute';
+
+  // run the modifiers
+  data = runModifiers(this.modifiers, data);
+
+  // the first `update` will call `onCreate` callback
+  // the other ones will call `onUpdate` callback
+  if (!this.state.isCreated) {
+    this.state.isCreated = true;
+    this.options.onCreate(data);
+  } else {
+    this.options.onUpdate(data);
+  }
+}
+
+/**
+ * Helper used to know if the given modifier is enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean}
+ */
+function isModifierEnabled(modifiers, modifierName) {
+  return modifiers.some(({ name, enabled }) => enabled && name === modifierName);
+}
+
+/**
+ * Get the prefixed supported property name
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} property (camelCase)
+ * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
+ */
+function getSupportedPropertyName(property) {
+  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
+  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);
+
+  for (let i = 0; i < prefixes.length - 1; i++) {
+    const prefix = prefixes[i];
+    const toCheck = prefix ? `${prefix}${upperProp}` : property;
+    if (typeof document.body.style[toCheck] !== 'undefined') {
+      return toCheck;
+    }
+  }
+  return null;
+}
+
+/**
+ * Destroy the popper
+ * @method
+ * @memberof Popper
+ */
+function destroy() {
+  this.state.isDestroyed = true;
+
+  // touch DOM only if `applyStyle` modifier is enabled
+  if (isModifierEnabled(this.modifiers, 'applyStyle')) {
+    this.popper.removeAttribute('x-placement');
+    this.popper.style.left = '';
+    this.popper.style.position = '';
+    this.popper.style.top = '';
+    this.popper.style[getSupportedPropertyName('transform')] = '';
+  }
+
+  this.disableEventListeners();
+
+  // remove the popper if user explicity asked for the deletion on destroy
+  // do not use `remove` because IE11 doesn't support it
+  if (this.options.removeOnDestroy) {
+    this.popper.parentNode.removeChild(this.popper);
+  }
+  return this;
+}
+
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  const ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
+function attachToScrollParents(scrollParent, event, callback, scrollParents) {
+  const isBody = scrollParent.nodeName === 'BODY';
+  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
+  target.addEventListener(event, callback, { passive: true });
+
+  if (!isBody) {
+    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
+  }
+  scrollParents.push(target);
+}
+
+/**
+ * Setup needed event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function setupEventListeners(reference, options, state, updateBound) {
+  // Resize event listener on window
+  state.updateBound = updateBound;
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
+
+  // Scroll event listener on scroll parents
+  const scrollElement = getScrollParent(reference);
+  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
+  state.scrollElement = scrollElement;
+  state.eventsEnabled = true;
+
+  return state;
+}
+
+/**
+ * It will add resize/scroll events and start recalculating
+ * position of the popper element when they are triggered.
+ * @method
+ * @memberof Popper
+ */
+function enableEventListeners() {
+  if (!this.state.eventsEnabled) {
+    this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
+  }
+}
+
+/**
+ * Remove event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function removeEventListeners(reference, state) {
+  // Remove resize event listener on window
+  getWindow(reference).removeEventListener('resize', state.updateBound);
+
+  // Remove scroll event listener on scroll parents
+  state.scrollParents.forEach(target => {
+    target.removeEventListener('scroll', state.updateBound);
+  });
+
+  // Reset state
+  state.updateBound = null;
+  state.scrollParents = [];
+  state.scrollElement = null;
+  state.eventsEnabled = false;
+  return state;
+}
+
+/**
+ * It will remove resize/scroll events and won't recalculate popper position
+ * when they are triggered. It also won't trigger onUpdate callback anymore,
+ * unless you call `update` method manually.
+ * @method
+ * @memberof Popper
+ */
+function disableEventListeners() {
+  if (this.state.eventsEnabled) {
+    cancelAnimationFrame(this.scheduleUpdate);
+    this.state = removeEventListeners(this.reference, this.state);
+  }
+}
+
+/**
+ * Tells if a given input is a number
+ * @method
+ * @memberof Popper.Utils
+ * @param {*} input to check
+ * @return {Boolean}
+ */
+function isNumeric(n) {
+  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
+}
+
+/**
+ * Set the style to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the style to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setStyles(element, styles) {
+  Object.keys(styles).forEach(prop => {
+    let unit = '';
+    // add unit if the value is numeric and is one of the following
+    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
+      unit = 'px';
+    }
+    element.style[prop] = styles[prop] + unit;
+  });
+}
+
+/**
+ * Set the attributes to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the attributes to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setAttributes(element, attributes) {
+  Object.keys(attributes).forEach(function (prop) {
+    const value = attributes[prop];
+    if (value !== false) {
+      element.setAttribute(prop, attributes[prop]);
+    } else {
+      element.removeAttribute(prop);
+    }
+  });
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} data.styles - List of style properties - values to apply to popper element
+ * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The same data object
+ */
+function applyStyle(data) {
+  // any property present in `data.styles` will be applied to the popper,
+  // in this way we can make the 3rd party modifiers add custom styles to it
+  // Be aware, modifiers could override the properties defined in the previous
+  // lines of this modifier!
+  setStyles(data.instance.popper, data.styles);
+
+  // any property present in `data.attributes` will be applied to the popper,
+  // they will be set as HTML attributes of the element
+  setAttributes(data.instance.popper, data.attributes);
+
+  // if arrowElement is defined and arrowStyles has some properties
+  if (data.arrowElement && Object.keys(data.arrowStyles).length) {
+    setStyles(data.arrowElement, data.arrowStyles);
+  }
+
+  return data;
+}
+
+/**
+ * Set the x-placement attribute before everything else because it could be used
+ * to add margins to the popper margins needs to be calculated to get the
+ * correct popper offsets.
+ * @method
+ * @memberof Popper.modifiers
+ * @param {HTMLElement} reference - The reference element used to position the popper
+ * @param {HTMLElement} popper - The HTML element used as popper.
+ * @param {Object} options - Popper.js options
+ */
+function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
+  // compute reference element offsets
+  const referenceOffsets = getReferenceOffsets(state, popper, reference);
+
+  // compute auto placement, store placement inside the data object,
+  // modifiers will be able to edit `placement` if needed
+  // and refer to originalPlacement to know the original value
+  const placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);
+
+  popper.setAttribute('x-placement', placement);
+
+  // Apply `position` to popper before anything else because
+  // without the position applied we can't guarantee correct computations
+  setStyles(popper, { position: 'absolute' });
+
+  return options;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeStyle(data, options) {
+  const { x, y } = options;
+  const { popper } = data.offsets;
+
+  // Remove this legacy support in Popper.js v2
+  const legacyGpuAccelerationOption = find(data.instance.modifiers, modifier => modifier.name === 'applyStyle').gpuAcceleration;
+  if (legacyGpuAccelerationOption !== undefined) {
+    console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
+  }
+  const gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;
+
+  const offsetParent = getOffsetParent(data.instance.popper);
+  const offsetParentRect = getBoundingClientRect(offsetParent);
+
+  // Styles
+  const styles = {
+    position: popper.position
+  };
+
+  // floor sides to avoid blurry text
+  const offsets = {
+    left: Math.floor(popper.left),
+    top: Math.floor(popper.top),
+    bottom: Math.floor(popper.bottom),
+    right: Math.floor(popper.right)
+  };
+
+  const sideA = x === 'bottom' ? 'top' : 'bottom';
+  const sideB = y === 'right' ? 'left' : 'right';
+
+  // if gpuAcceleration is set to `true` and transform is supported,
+  //  we use `translate3d` to apply the position to the popper we
+  // automatically use the supported prefixed version if needed
+  const prefixedProperty = getSupportedPropertyName('transform');
+
+  // now, let's make a step back and look at this code closely (wtf?)
+  // If the content of the popper grows once it's been positioned, it
+  // may happen that the popper gets misplaced because of the new content
+  // overflowing its reference element
+  // To avoid this problem, we provide two options (x and y), which allow
+  // the consumer to define the offset origin.
+  // If we position a popper on top of a reference element, we can set
+  // `x` to `top` to make the popper grow towards its top instead of
+  // its bottom.
+  let left, top;
+  if (sideA === 'bottom') {
+    top = -offsetParentRect.height + offsets.bottom;
+  } else {
+    top = offsets.top;
+  }
+  if (sideB === 'right') {
+    left = -offsetParentRect.width + offsets.right;
+  } else {
+    left = offsets.left;
+  }
+  if (gpuAcceleration && prefixedProperty) {
+    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;
+    styles[sideA] = 0;
+    styles[sideB] = 0;
+    styles.willChange = 'transform';
+  } else {
+    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
+    const invertTop = sideA === 'bottom' ? -1 : 1;
+    const invertLeft = sideB === 'right' ? -1 : 1;
+    styles[sideA] = top * invertTop;
+    styles[sideB] = left * invertLeft;
+    styles.willChange = `${sideA}, ${sideB}`;
+  }
+
+  // Attributes
+  const attributes = {
+    'x-placement': data.placement
+  };
+
+  // Update `data` attributes, styles and arrowStyles
+  data.attributes = _extends({}, attributes, data.attributes);
+  data.styles = _extends({}, styles, data.styles);
+  data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);
+
+  return data;
+}
+
+/**
+ * Helper used to know if the given modifier depends from another one.<br />
+ * It checks if the needed modifier is listed and enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @param {Array} modifiers - list of modifiers
+ * @param {String} requestingName - name of requesting modifier
+ * @param {String} requestedName - name of requested modifier
+ * @returns {Boolean}
+ */
+function isModifierRequired(modifiers, requestingName, requestedName) {
+  const requesting = find(modifiers, ({ name }) => name === requestingName);
+
+  const isRequired = !!requesting && modifiers.some(modifier => {
+    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
+  });
+
+  if (!isRequired) {
+    const requesting = `\`${requestingName}\``;
+    const requested = `\`${requestedName}\``;
+    console.warn(`${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`);
+  }
+  return isRequired;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function arrow(data, options) {
+  // arrow depends on keepTogether in order to work
+  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
+    return data;
+  }
+
+  let arrowElement = options.element;
+
+  // if arrowElement is a string, suppose it's a CSS selector
+  if (typeof arrowElement === 'string') {
+    arrowElement = data.instance.popper.querySelector(arrowElement);
+
+    // if arrowElement is not found, don't run the modifier
+    if (!arrowElement) {
+      return data;
+    }
+  } else {
+    // if the arrowElement isn't a query selector we must check that the
+    // provided DOM node is child of its popper node
+    if (!data.instance.popper.contains(arrowElement)) {
+      console.warn('WARNING: `arrow.element` must be child of its popper element!');
+      return data;
+    }
+  }
+
+  const placement = data.placement.split('-')[0];
+  const { popper, reference } = data.offsets;
+  const isVertical = ['left', 'right'].indexOf(placement) !== -1;
+
+  const len = isVertical ? 'height' : 'width';
+  const sideCapitalized = isVertical ? 'Top' : 'Left';
+  const side = sideCapitalized.toLowerCase();
+  const altSide = isVertical ? 'left' : 'top';
+  const opSide = isVertical ? 'bottom' : 'right';
+  const arrowElementSize = getOuterSizes(arrowElement)[len];
+
+  //
+  // extends keepTogether behavior making sure the popper and its
+  // reference have enough pixels in conjuction
+  //
+
+  // top/left side
+  if (reference[opSide] - arrowElementSize < popper[side]) {
+    data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
+  }
+  // bottom/right side
+  if (reference[side] + arrowElementSize > popper[opSide]) {
+    data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
+  }
+  data.offsets.popper = getClientRect(data.offsets.popper);
+
+  // compute center of the popper
+  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;
+
+  // Compute the sideValue using the updated popper offsets
+  // take popper margin in account because we don't have this info available
+  const css = getStyleComputedProperty(data.instance.popper);
+  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);
+  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);
+  let sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;
+
+  // prevent arrowElement from being placed not contiguously to its popper
+  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);
+
+  data.arrowElement = arrowElement;
+  data.offsets.arrow = {
+    [side]: Math.round(sideValue),
+    [altSide]: '' // make sure to unset any eventual altSide value from the DOM node
+  };
+
+  return data;
+}
+
+/**
+ * Get the opposite placement variation of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement variation
+ * @returns {String} flipped placement variation
+ */
+function getOppositeVariation(variation) {
+  if (variation === 'end') {
+    return 'start';
+  } else if (variation === 'start') {
+    return 'end';
+  }
+  return variation;
+}
+
+/**
+ * List of accepted placements to use as values of the `placement` option.<br />
+ * Valid placements are:
+ * - `auto`
+ * - `top`
+ * - `right`
+ * - `bottom`
+ * - `left`
+ *
+ * Each placement can have a variation from this list:
+ * - `-start`
+ * - `-end`
+ *
+ * Variations are interpreted easily if you think of them as the left to right
+ * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
+ * is right.<br />
+ * Vertically (`left` and `right`), `start` is top and `end` is bottom.
+ *
+ * Some valid examples are:
+ * - `top-end` (on top of reference, right aligned)
+ * - `right-start` (on right of reference, top aligned)
+ * - `bottom` (on bottom, centered)
+ * - `auto-right` (on the side with more space available, alignment depends by placement)
+ *
+ * @static
+ * @type {Array}
+ * @enum {String}
+ * @readonly
+ * @method placements
+ * @memberof Popper
+ */
+var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];
+
+// Get rid of `auto` `auto-start` and `auto-end`
+const validPlacements = placements.slice(3);
+
+/**
+ * Given an initial placement, returns all the subsequent placements
+ * clockwise (or counter-clockwise).
+ *
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement - A valid placement (it accepts variations)
+ * @argument {Boolean} counter - Set to true to walk the placements counterclockwise
+ * @returns {Array} placements including their variations
+ */
+function clockwise(placement, counter = false) {
+  const index = validPlacements.indexOf(placement);
+  const arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
+  return counter ? arr.reverse() : arr;
+}
+
+const BEHAVIORS = {
+  FLIP: 'flip',
+  CLOCKWISE: 'clockwise',
+  COUNTERCLOCKWISE: 'counterclockwise'
+};
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function flip(data, options) {
+  // if `inner` modifier is enabled, we can't use the `flip` modifier
+  if (isModifierEnabled(data.instance.modifiers, 'inner')) {
+    return data;
+  }
+
+  if (data.flipped && data.placement === data.originalPlacement) {
+    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
+    return data;
+  }
+
+  const boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement);
+
+  let placement = data.placement.split('-')[0];
+  let placementOpposite = getOppositePlacement(placement);
+  let variation = data.placement.split('-')[1] || '';
+
+  let flipOrder = [];
+
+  switch (options.behavior) {
+    case BEHAVIORS.FLIP:
+      flipOrder = [placement, placementOpposite];
+      break;
+    case BEHAVIORS.CLOCKWISE:
+      flipOrder = clockwise(placement);
+      break;
+    case BEHAVIORS.COUNTERCLOCKWISE:
+      flipOrder = clockwise(placement, true);
+      break;
+    default:
+      flipOrder = options.behavior;
+  }
+
+  flipOrder.forEach((step, index) => {
+    if (placement !== step || flipOrder.length === index + 1) {
+      return data;
+    }
+
+    placement = data.placement.split('-')[0];
+    placementOpposite = getOppositePlacement(placement);
+
+    const popperOffsets = data.offsets.popper;
+    const refOffsets = data.offsets.reference;
+
+    // using floor because the reference offsets may contain decimals we are not going to consider here
+    const floor = Math.floor;
+    const overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);
+
+    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
+    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
+    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
+    const overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);
+
+    const overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;
+
+    // flip the variation if required
+    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
+    const flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
+
+    if (overlapsRef || overflowsBoundaries || flippedVariation) {
+      // this boolean to detect any flip loop
+      data.flipped = true;
+
+      if (overlapsRef || overflowsBoundaries) {
+        placement = flipOrder[index + 1];
+      }
+
+      if (flippedVariation) {
+        variation = getOppositeVariation(variation);
+      }
+
+      data.placement = placement + (variation ? '-' + variation : '');
+
+      // this object contains `position`, we want to preserve it along with
+      // any additional property we may add in the future
+      data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));
+
+      data = runModifiers(data.instance.modifiers, data, 'flip');
+    }
+  });
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function keepTogether(data) {
+  const { popper, reference } = data.offsets;
+  const placement = data.placement.split('-')[0];
+  const floor = Math.floor;
+  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
+  const side = isVertical ? 'right' : 'bottom';
+  const opSide = isVertical ? 'left' : 'top';
+  const measurement = isVertical ? 'width' : 'height';
+
+  if (popper[side] < floor(reference[opSide])) {
+    data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
+  }
+  if (popper[opSide] > floor(reference[side])) {
+    data.offsets.popper[opSide] = floor(reference[side]);
+  }
+
+  return data;
+}
+
+/**
+ * Converts a string containing value + unit into a px value number
+ * @function
+ * @memberof {modifiers~offset}
+ * @private
+ * @argument {String} str - Value + unit string
+ * @argument {String} measurement - `height` or `width`
+ * @argument {Object} popperOffsets
+ * @argument {Object} referenceOffsets
+ * @returns {Number|String}
+ * Value in pixels, or original string if no values were extracted
+ */
+function toValue(str, measurement, popperOffsets, referenceOffsets) {
+  // separate value from unit
+  const split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
+  const value = +split[1];
+  const unit = split[2];
+
+  // If it's not a number it's an operator, I guess
+  if (!value) {
+    return str;
+  }
+
+  if (unit.indexOf('%') === 0) {
+    let element;
+    switch (unit) {
+      case '%p':
+        element = popperOffsets;
+        break;
+      case '%':
+      case '%r':
+      default:
+        element = referenceOffsets;
+    }
+
+    const rect = getClientRect(element);
+    return rect[measurement] / 100 * value;
+  } else if (unit === 'vh' || unit === 'vw') {
+    // if is a vh or vw, we calculate the size based on the viewport
+    let size;
+    if (unit === 'vh') {
+      size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
+    } else {
+      size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
+    }
+    return size / 100 * value;
+  } else {
+    // if is an explicit pixel unit, we get rid of the unit and keep the value
+    // if is an implicit unit, it's px, and we return just the value
+    return value;
+  }
+}
+
+/**
+ * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
+ * @function
+ * @memberof {modifiers~offset}
+ * @private
+ * @argument {String} offset
+ * @argument {Object} popperOffsets
+ * @argument {Object} referenceOffsets
+ * @argument {String} basePlacement
+ * @returns {Array} a two cells array with x and y offsets in numbers
+ */
+function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {
+  const offsets = [0, 0];
+
+  // Use height if placement is left or right and index is 0 otherwise use width
+  // in this way the first offset will use an axis and the second one
+  // will use the other one
+  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;
+
+  // Split the offset string to obtain a list of values and operands
+  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)
+  const fragments = offset.split(/(\+|\-)/).map(frag => frag.trim());
+
+  // Detect if the offset string contains a pair of values or a single one
+  // they could be separated by comma or space
+  const divider = fragments.indexOf(find(fragments, frag => frag.search(/,|\s/) !== -1));
+
+  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
+    console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
+  }
+
+  // If divider is found, we divide the list of values and operands to divide
+  // them by ofset X and Y.
+  const splitRegex = /\s*,\s*|\s+/;
+  let ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];
+
+  // Convert the values with units to absolute pixels to allow our computations
+  ops = ops.map((op, index) => {
+    // Most of the units rely on the orientation of the popper
+    const measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
+    let mergeWithPrevious = false;
+    return op
+    // This aggregates any `+` or `-` sign that aren't considered operators
+    // e.g.: 10 + +5 => [10, +, +5]
+    .reduce((a, b) => {
+      if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
+        a[a.length - 1] = b;
+        mergeWithPrevious = true;
+        return a;
+      } else if (mergeWithPrevious) {
+        a[a.length - 1] += b;
+        mergeWithPrevious = false;
+        return a;
+      } else {
+        return a.concat(b);
+      }
+    }, [])
+    // Here we convert the string values into number values (in px)
+    .map(str => toValue(str, measurement, popperOffsets, referenceOffsets));
+  });
+
+  // Loop trough the offsets arrays and execute the operations
+  ops.forEach((op, index) => {
+    op.forEach((frag, index2) => {
+      if (isNumeric(frag)) {
+        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
+      }
+    });
+  });
+  return offsets;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @argument {Number|String} options.offset=0
+ * The offset value as described in the modifier description
+ * @returns {Object} The data object, properly modified
+ */
+function offset(data, { offset }) {
+  const { placement, offsets: { popper, reference } } = data;
+  const basePlacement = placement.split('-')[0];
+
+  let offsets;
+  if (isNumeric(+offset)) {
+    offsets = [+offset, 0];
+  } else {
+    offsets = parseOffset(offset, popper, reference, basePlacement);
+  }
+
+  if (basePlacement === 'left') {
+    popper.top += offsets[0];
+    popper.left -= offsets[1];
+  } else if (basePlacement === 'right') {
+    popper.top += offsets[0];
+    popper.left += offsets[1];
+  } else if (basePlacement === 'top') {
+    popper.left += offsets[0];
+    popper.top -= offsets[1];
+  } else if (basePlacement === 'bottom') {
+    popper.left += offsets[0];
+    popper.top += offsets[1];
+  }
+
+  data.popper = popper;
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function preventOverflow(data, options) {
+  let boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);
+
+  // If offsetParent is the reference element, we really want to
+  // go one step up and use the next offsetParent as reference to
+  // avoid to make this modifier completely useless and look like broken
+  if (data.instance.reference === boundariesElement) {
+    boundariesElement = getOffsetParent(boundariesElement);
+  }
+
+  const boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement);
+  options.boundaries = boundaries;
+
+  const order = options.priority;
+  let popper = data.offsets.popper;
+
+  const check = {
+    primary(placement) {
+      let value = popper[placement];
+      if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
+        value = Math.max(popper[placement], boundaries[placement]);
+      }
+      return { [placement]: value };
+    },
+    secondary(placement) {
+      const mainSide = placement === 'right' ? 'left' : 'top';
+      let value = popper[mainSide];
+      if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
+        value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
+      }
+      return { [mainSide]: value };
+    }
+  };
+
+  order.forEach(placement => {
+    const side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
+    popper = _extends({}, popper, check[side](placement));
+  });
+
+  data.offsets.popper = popper;
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function shift(data) {
+  const placement = data.placement;
+  const basePlacement = placement.split('-')[0];
+  const shiftvariation = placement.split('-')[1];
+
+  // if shift shiftvariation is specified, run the modifier
+  if (shiftvariation) {
+    const { reference, popper } = data.offsets;
+    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
+    const side = isVertical ? 'left' : 'top';
+    const measurement = isVertical ? 'width' : 'height';
+
+    const shiftOffsets = {
+      start: { [side]: reference[side] },
+      end: {
+        [side]: reference[side] + reference[measurement] - popper[measurement]
+      }
+    };
+
+    data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
+  }
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function hide(data) {
+  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
+    return data;
+  }
+
+  const refRect = data.offsets.reference;
+  const bound = find(data.instance.modifiers, modifier => modifier.name === 'preventOverflow').boundaries;
+
+  if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
+    // Avoid unnecessary DOM access if visibility hasn't changed
+    if (data.hide === true) {
+      return data;
+    }
+
+    data.hide = true;
+    data.attributes['x-out-of-boundaries'] = '';
+  } else {
+    // Avoid unnecessary DOM access if visibility hasn't changed
+    if (data.hide === false) {
+      return data;
+    }
+
+    data.hide = false;
+    data.attributes['x-out-of-boundaries'] = false;
+  }
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function inner(data) {
+  const placement = data.placement;
+  const basePlacement = placement.split('-')[0];
+  const { popper, reference } = data.offsets;
+  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
+
+  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
+
+  popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
+
+  data.placement = getOppositePlacement(placement);
+  data.offsets.popper = getClientRect(popper);
+
+  return data;
+}
+
+/**
+ * Modifier function, each modifier can have a function of this type assigned
+ * to its `fn` property.<br />
+ * These functions will be called on each update, this means that you must
+ * make sure they are performant enough to avoid performance bottlenecks.
+ *
+ * @function ModifierFn
+ * @argument {dataObject} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {dataObject} The data object, properly modified
+ */
+
+/**
+ * Modifiers are plugins used to alter the behavior of your poppers.<br />
+ * Popper.js uses a set of 9 modifiers to provide all the basic functionalities
+ * needed by the library.
+ *
+ * Usually you don't want to override the `order`, `fn` and `onLoad` props.
+ * All the other properties are configurations that could be tweaked.
+ * @namespace modifiers
+ */
+var modifiers = {
+  /**
+   * Modifier used to shift the popper on the start or end of its reference
+   * element.<br />
+   * It will read the variation of the `placement` property.<br />
+   * It can be one either `-end` or `-start`.
+   * @memberof modifiers
+   * @inner
+   */
+  shift: {
+    /** @prop {number} order=100 - Index used to define the order of execution */
+    order: 100,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: shift
+  },
+
+  /**
+   * The `offset` modifier can shift your popper on both its axis.
+   *
+   * It accepts the following units:
+   * - `px` or unitless, interpreted as pixels
+   * - `%` or `%r`, percentage relative to the length of the reference element
+   * - `%p`, percentage relative to the length of the popper element
+   * - `vw`, CSS viewport width unit
+   * - `vh`, CSS viewport height unit
+   *
+   * For length is intended the main axis relative to the placement of the popper.<br />
+   * This means that if the placement is `top` or `bottom`, the length will be the
+   * `width`. In case of `left` or `right`, it will be the height.
+   *
+   * You can provide a single value (as `Number` or `String`), or a pair of values
+   * as `String` divided by a comma or one (or more) white spaces.<br />
+   * The latter is a deprecated method because it leads to confusion and will be
+   * removed in v2.<br />
+   * Additionally, it accepts additions and subtractions between different units.
+   * Note that multiplications and divisions aren't supported.
+   *
+   * Valid examples are:
+   * ```
+   * 10
+   * '10%'
+   * '10, 10'
+   * '10%, 10'
+   * '10 + 10%'
+   * '10 - 5vh + 3%'
+   * '-10px + 5vh, 5px - 6%'
+   * ```
+   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
+   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.
+   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  offset: {
+    /** @prop {number} order=200 - Index used to define the order of execution */
+    order: 200,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: offset,
+    /** @prop {Number|String} offset=0
+     * The offset value as described in the modifier description
+     */
+    offset: 0
+  },
+
+  /**
+   * Modifier used to prevent the popper from being positioned outside the boundary.
+   *
+   * An scenario exists where the reference itself is not within the boundaries.<br />
+   * We can say it has "escaped the boundaries" — or just "escaped".<br />
+   * In this case we need to decide whether the popper should either:
+   *
+   * - detach from the reference and remain "trapped" in the boundaries, or
+   * - if it should ignore the boundary and "escape with its reference"
+   *
+   * When `escapeWithReference` is set to`true` and reference is completely
+   * outside its boundaries, the popper will overflow (or completely leave)
+   * the boundaries in order to remain attached to the edge of the reference.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  preventOverflow: {
+    /** @prop {number} order=300 - Index used to define the order of execution */
+    order: 300,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: preventOverflow,
+    /**
+     * @prop {Array} [priority=['left','right','top','bottom']]
+     * Popper will try to prevent overflow following these priorities by default,
+     * then, it could overflow on the left and on top of the `boundariesElement`
+     */
+    priority: ['left', 'right', 'top', 'bottom'],
+    /**
+     * @prop {number} padding=5
+     * Amount of pixel used to define a minimum distance between the boundaries
+     * and the popper this makes sure the popper has always a little padding
+     * between the edges of its container
+     */
+    padding: 5,
+    /**
+     * @prop {String|HTMLElement} boundariesElement='scrollParent'
+     * Boundaries used by the modifier, can be `scrollParent`, `window`,
+     * `viewport` or any DOM element.
+     */
+    boundariesElement: 'scrollParent'
+  },
+
+  /**
+   * Modifier used to make sure the reference and its popper stay near eachothers
+   * without leaving any gap between the two. Expecially useful when the arrow is
+   * enabled and you want to assure it to point to its reference element.
+   * It cares only about the first axis, you can still have poppers with margin
+   * between the popper and its reference element.
+   * @memberof modifiers
+   * @inner
+   */
+  keepTogether: {
+    /** @prop {number} order=400 - Index used to define the order of execution */
+    order: 400,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: keepTogether
+  },
+
+  /**
+   * This modifier is used to move the `arrowElement` of the popper to make
+   * sure it is positioned between the reference element and its popper element.
+   * It will read the outer size of the `arrowElement` node to detect how many
+   * pixels of conjuction are needed.
+   *
+   * It has no effect if no `arrowElement` is provided.
+   * @memberof modifiers
+   * @inner
+   */
+  arrow: {
+    /** @prop {number} order=500 - Index used to define the order of execution */
+    order: 500,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: arrow,
+    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
+    element: '[x-arrow]'
+  },
+
+  /**
+   * Modifier used to flip the popper's placement when it starts to overlap its
+   * reference element.
+   *
+   * Requires the `preventOverflow` modifier before it in order to work.
+   *
+   * **NOTE:** this modifier will interrupt the current update cycle and will
+   * restart it if it detects the need to flip the placement.
+   * @memberof modifiers
+   * @inner
+   */
+  flip: {
+    /** @prop {number} order=600 - Index used to define the order of execution */
+    order: 600,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: flip,
+    /**
+     * @prop {String|Array} behavior='flip'
+     * The behavior used to change the popper's placement. It can be one of
+     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
+     * placements (with optional variations).
+     */
+    behavior: 'flip',
+    /**
+     * @prop {number} padding=5
+     * The popper will flip if it hits the edges of the `boundariesElement`
+     */
+    padding: 5,
+    /**
+     * @prop {String|HTMLElement} boundariesElement='viewport'
+     * The element which will define the boundaries of the popper position,
+     * the popper will never be placed outside of the defined boundaries
+     * (except if keepTogether is enabled)
+     */
+    boundariesElement: 'viewport'
+  },
+
+  /**
+   * Modifier used to make the popper flow toward the inner of the reference element.
+   * By default, when this modifier is disabled, the popper will be placed outside
+   * the reference element.
+   * @memberof modifiers
+   * @inner
+   */
+  inner: {
+    /** @prop {number} order=700 - Index used to define the order of execution */
+    order: 700,
+    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
+    enabled: false,
+    /** @prop {ModifierFn} */
+    fn: inner
+  },
+
+  /**
+   * Modifier used to hide the popper when its reference element is outside of the
+   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can
+   * be used to hide with a CSS selector the popper when its reference is
+   * out of boundaries.
+   *
+   * Requires the `preventOverflow` modifier before it in order to work.
+   * @memberof modifiers
+   * @inner
+   */
+  hide: {
+    /** @prop {number} order=800 - Index used to define the order of execution */
+    order: 800,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: hide
+  },
+
+  /**
+   * Computes the style that will be applied to the popper element to gets
+   * properly positioned.
+   *
+   * Note that this modifier will not touch the DOM, it just prepares the styles
+   * so that `applyStyle` modifier can apply it. This separation is useful
+   * in case you need to replace `applyStyle` with a custom implementation.
+   *
+   * This modifier has `850` as `order` value to maintain backward compatibility
+   * with previous versions of Popper.js. Expect the modifiers ordering method
+   * to change in future major versions of the library.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  computeStyle: {
+    /** @prop {number} order=850 - Index used to define the order of execution */
+    order: 850,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: computeStyle,
+    /**
+     * @prop {Boolean} gpuAcceleration=true
+     * If true, it uses the CSS 3d transformation to position the popper.
+     * Otherwise, it will use the `top` and `left` properties.
+     */
+    gpuAcceleration: true,
+    /**
+     * @prop {string} [x='bottom']
+     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
+     * Change this if your popper should grow in a direction different from `bottom`
+     */
+    x: 'bottom',
+    /**
+     * @prop {string} [x='left']
+     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
+     * Change this if your popper should grow in a direction different from `right`
+     */
+    y: 'right'
+  },
+
+  /**
+   * Applies the computed styles to the popper element.
+   *
+   * All the DOM manipulations are limited to this modifier. This is useful in case
+   * you want to integrate Popper.js inside a framework or view library and you
+   * want to delegate all the DOM manipulations to it.
+   *
+   * Note that if you disable this modifier, you must make sure the popper element
+   * has its position set to `absolute` before Popper.js can do its work!
+   *
+   * Just disable this modifier and define you own to achieve the desired effect.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  applyStyle: {
+    /** @prop {number} order=900 - Index used to define the order of execution */
+    order: 900,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: applyStyle,
+    /** @prop {Function} */
+    onLoad: applyStyleOnLoad,
+    /**
+     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
+     * @prop {Boolean} gpuAcceleration=true
+     * If true, it uses the CSS 3d transformation to position the popper.
+     * Otherwise, it will use the `top` and `left` properties.
+     */
+    gpuAcceleration: undefined
+  }
+};
+
+/**
+ * The `dataObject` is an object containing all the informations used by Popper.js
+ * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
+ * @name dataObject
+ * @property {Object} data.instance The Popper.js instance
+ * @property {String} data.placement Placement applied to popper
+ * @property {String} data.originalPlacement Placement originally defined on init
+ * @property {Boolean} data.flipped True if popper has been flipped by flip modifier
+ * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.
+ * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
+ * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)
+ * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)
+ * @property {Object} data.boundaries Offsets of the popper boundaries
+ * @property {Object} data.offsets The measurements of popper, reference and arrow elements.
+ * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
+ * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
+ * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
+ */
+
+/**
+ * Default options provided to Popper.js constructor.<br />
+ * These can be overriden using the `options` argument of Popper.js.<br />
+ * To override an option, simply pass as 3rd argument an object with the same
+ * structure of this object, example:
+ * ```
+ * new Popper(ref, pop, {
+ *   modifiers: {
+ *     preventOverflow: { enabled: false }
+ *   }
+ * })
+ * ```
+ * @type {Object}
+ * @static
+ * @memberof Popper
+ */
+var Defaults = {
+  /**
+   * Popper's placement
+   * @prop {Popper.placements} placement='bottom'
+   */
+  placement: 'bottom',
+
+  /**
+   * Whether events (resize, scroll) are initially enabled
+   * @prop {Boolean} eventsEnabled=true
+   */
+  eventsEnabled: true,
+
+  /**
+   * Set to true if you want to automatically remove the popper when
+   * you call the `destroy` method.
+   * @prop {Boolean} removeOnDestroy=false
+   */
+  removeOnDestroy: false,
+
+  /**
+   * Callback called when the popper is created.<br />
+   * By default, is set to no-op.<br />
+   * Access Popper.js instance with `data.instance`.
+   * @prop {onCreate}
+   */
+  onCreate: () => {},
+
+  /**
+   * Callback called when the popper is updated, this callback is not called
+   * on the initialization/creation of the popper, but only on subsequent
+   * updates.<br />
+   * By default, is set to no-op.<br />
+   * Access Popper.js instance with `data.instance`.
+   * @prop {onUpdate}
+   */
+  onUpdate: () => {},
+
+  /**
+   * List of modifiers used to modify the offsets before they are applied to the popper.
+   * They provide most of the functionalities of Popper.js
+   * @prop {modifiers}
+   */
+  modifiers
+};
+
+/**
+ * @callback onCreate
+ * @param {dataObject} data
+ */
+
+/**
+ * @callback onUpdate
+ * @param {dataObject} data
+ */
+
+// Utils
+// Methods
+class Popper {
+  /**
+   * Create a new Popper.js instance
+   * @class Popper
+   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper
+   * @param {HTMLElement} popper - The HTML element used as popper.
+   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
+   * @return {Object} instance - The generated Popper.js instance
+   */
+  constructor(reference, popper, options = {}) {
+    this.scheduleUpdate = () => requestAnimationFrame(this.update);
+
+    // make update() debounced, so that it only runs at most once-per-tick
+    this.update = debounce(this.update.bind(this));
+
+    // with {} we create a new object with the options inside it
+    this.options = _extends({}, Popper.Defaults, options);
+
+    // init state
+    this.state = {
+      isDestroyed: false,
+      isCreated: false,
+      scrollParents: []
+    };
+
+    // get reference and popper elements (allow jQuery wrappers)
+    this.reference = reference && reference.jquery ? reference[0] : reference;
+    this.popper = popper && popper.jquery ? popper[0] : popper;
+
+    // Deep merge modifiers options
+    this.options.modifiers = {};
+    Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(name => {
+      this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
+    });
+
+    // Refactoring modifiers' list (Object => Array)
+    this.modifiers = Object.keys(this.options.modifiers).map(name => _extends({
+      name
+    }, this.options.modifiers[name]))
+    // sort the modifiers by order
+    .sort((a, b) => a.order - b.order);
+
+    // modifiers have the ability to execute arbitrary code when Popper.js get inited
+    // such code is executed in the same order of its modifier
+    // they could add new properties to their options configuration
+    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
+    this.modifiers.forEach(modifierOptions => {
+      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
+        modifierOptions.onLoad(this.reference, this.popper, this.options, modifierOptions, this.state);
+      }
+    });
+
+    // fire the first update to position the popper in the right place
+    this.update();
+
+    const eventsEnabled = this.options.eventsEnabled;
+    if (eventsEnabled) {
+      // setup event listeners, they will take care of update the position in specific situations
+      this.enableEventListeners();
+    }
+
+    this.state.eventsEnabled = eventsEnabled;
+  }
+
+  // We can't use class properties because they don't get listed in the
+  // class prototype and break stuff like Sinon stubs
+  update() {
+    return update.call(this);
+  }
+  destroy() {
+    return destroy.call(this);
+  }
+  enableEventListeners() {
+    return enableEventListeners.call(this);
+  }
+  disableEventListeners() {
+    return disableEventListeners.call(this);
+  }
+
+  /**
+   * Schedule an update, it will run on the next UI update available
+   * @method scheduleUpdate
+   * @memberof Popper
+   */
+
+
+  /**
+   * Collection of utilities useful when writing custom modifiers.
+   * Starting from version 1.7, this method is available only if you
+   * include `popper-utils.js` before `popper.js`.
+   *
+   * **DEPRECATION**: This way to access PopperUtils is deprecated
+   * and will be removed in v2! Use the PopperUtils module directly instead.
+   * Due to the high instability of the methods contained in Utils, we can't
+   * guarantee them to follow semver. Use them at your own risk!
+   * @static
+   * @private
+   * @type {Object}
+   * @deprecated since version 1.8
+   * @member Utils
+   * @memberof Popper
+   */
+}
+
+/**
+ * The `referenceObject` is an object that provides an interface compatible with Popper.js
+ * and lets you use it as replacement of a real DOM node.<br />
+ * You can use this method to position a popper relatively to a set of coordinates
+ * in case you don't have a DOM node to use as reference.
+ *
+ * ```
+ * new Popper(referenceObject, popperNode);
+ * ```
+ *
+ * NB: This feature isn't supported in Internet Explorer 10
+ * @name referenceObject
+ * @property {Function} data.getBoundingClientRect
+ * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
+ * @property {number} data.clientWidth
+ * An ES6 getter that will return the width of the virtual reference element.
+ * @property {number} data.clientHeight
+ * An ES6 getter that will return the height of the virtual reference element.
+ */
+
+Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
+Popper.placements = placements;
+Popper.Defaults = Defaults;
+
+export default Popper;
+//# sourceMappingURL=popper.js.map
diff --git a/dist/popper.js.map b/dist/popper.js.map
new file mode 100644
index 0000000..75a93cc
--- /dev/null
+++ b/dist/popper.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.js","sources":["../src/utils/debounce.js","../src/utils/isFunction.js","../src/utils/getStyleComputedProperty.js","../src/utils/getParentNode.js","../src/utils/getScrollParent.js","../src/utils/getOffsetParent.js","../src/utils/isOffsetContainer.js","../src/utils/getRoot.js","../src/utils/findCommonOffsetParent.js","../src/utils/getScroll.js","../src/utils/includeScroll.js","../src/utils/getBordersSize.js","../src/utils/isIE10.js","../src/utils/getWindowSizes.js","../src/utils/getClientRect.js","../src/utils/getBoundingClientRect.js","../src/utils/getOffsetRectRelativeToArbitraryNode.js","../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../src/utils/isFixed.js","../src/utils/getBoundaries.js","../src/utils/computeAutoPlacement.js","../src/utils/getReferenceOffsets.js","../src/utils/getOuterSizes.js","../src/utils/getOppositePlacement.js","../src/utils/getPopperOffsets.js","../src/utils/find.js","../src/utils/findIndex.js","../src/utils/runModifiers.js","../src/methods/update.js","../src/utils/isModifierEnabled.js","../src/utils/getSupportedPropertyName.js","../src/methods/destroy.js","../src/utils/getWindow.js","../src/utils/setupEventListeners.js","../src/methods/enableEventListeners.js","../src/utils/removeEventListeners.js","../src/methods/disableEventListeners.js","../src/utils/isNumeric.js","../src/utils/setStyles.js","../src/utils/setAttributes.js","../src/modifiers/applyStyle.js","../src/modifiers/computeStyle.js","../src/utils/isModifierRequired.js","../src/modifiers/arrow.js","../src/utils/getOppositeVariation.js","../src/methods/placements.js","../src/utils/clockwise.js","../src/modifiers/flip.js","../src/modifiers/keepTogether.js","../src/modifiers/offset.js","../src/modifiers/preventOverflow.js","../src/modifiers/shift.js","../src/modifiers/hide.js","../src/modifiers/inner.js","../src/modifiers/index.js","../src/methods/defaults.js","../src/index.js"],"sourcesContent":["const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n  data.offsets.popper.position = 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroy the popper\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicity asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper.\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n  reference,\n  popper,\n  options,\n  modifierOptions,\n  state\n) {\n  // compute reference element offsets\n  const referenceOffsets = getReferenceOffsets(state, popper, reference);\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  const placement = computeAutoPlacement(\n    options.placement,\n    referenceOffsets,\n    popper,\n    reference,\n    options.modifiers.flip.boundariesElement,\n    options.modifiers.flip.padding\n  );\n\n  popper.setAttribute('x-placement', placement);\n\n  // Apply `position` to popper before anything else because\n  // without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: 'absolute' });\n\n  return options;\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  // floor sides to avoid blurry text\n  const offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right),\n  };\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjuction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.<br />\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br />\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-right` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n  'auto-start',\n  'auto',\n  'auto-end',\n  'top-start',\n  'top',\n  'top-end',\n  'right-start',\n  'right',\n  'right-end',\n  'bottom-end',\n  'bottom',\n  'bottom-start',\n  'left-end',\n  'left',\n  'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    const flippedVariation =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement\n  );\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side = ['left', 'top'].indexOf(placement) !== -1\n      ? 'primary'\n      : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     */\n    boundariesElement: 'viewport',\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overriden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper\n   * @param {HTMLElement} popper - The HTML element used as popper.\n   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n   * @return {Object} instance - The generated Popper.js instance\n   */\n  constructor(reference, popper, options = {}) {\n    // make update() debounced, so that it only runs at most once-per-tick\n    this.update = debounce(this.update.bind(this));\n\n    // with {} we create a new object with the options inside it\n    this.options = { ...Popper.Defaults, ...options };\n\n    // init state\n    this.state = {\n      isDestroyed: false,\n      isCreated: false,\n      scrollParents: [],\n    };\n\n    // get reference and popper elements (allow jQuery wrappers)\n    this.reference = reference && reference.jquery ? reference[0] : reference;\n    this.popper = popper && popper.jquery ? popper[0] : popper;\n\n    // Deep merge modifiers options\n    this.options.modifiers = {};\n    Object.keys({\n      ...Popper.Defaults.modifiers,\n      ...options.modifiers,\n    }).forEach(name => {\n      this.options.modifiers[name] = {\n        // If it's a built-in modifier, use it as base\n        ...(Popper.Defaults.modifiers[name] || {}),\n        // If there are custom options, override and merge with default ones\n        ...(options.modifiers ? options.modifiers[name] : {}),\n      };\n    });\n\n    // Refactoring modifiers' list (Object => Array)\n    this.modifiers = Object.keys(this.options.modifiers)\n      .map(name => ({\n        name,\n        ...this.options.modifiers[name],\n      }))\n      // sort the modifiers by order\n      .sort((a, b) => a.order - b.order);\n\n    // modifiers have the ability to execute arbitrary code when Popper.js get inited\n    // such code is executed in the same order of its modifier\n    // they could add new properties to their options configuration\n    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n    this.modifiers.forEach(modifierOptions => {\n      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n        modifierOptions.onLoad(\n          this.reference,\n          this.popper,\n          this.options,\n          modifierOptions,\n          this.state\n        );\n      }\n    });\n\n    // fire the first update to position the popper in the right place\n    this.update();\n\n    const eventsEnabled = this.options.eventsEnabled;\n    if (eventsEnabled) {\n      // setup event listeners, they will take care of update the position in specific situations\n      this.enableEventListeners();\n    }\n\n    this.state.eventsEnabled = eventsEnabled;\n  }\n\n  // We can't use class properties because they don't get listed in the\n  // class prototype and break stuff like Sinon stubs\n  update() {\n    return update.call(this);\n  }\n  destroy() {\n    return destroy.call(this);\n  }\n  enableEventListeners() {\n    return enableEventListeners.call(this);\n  }\n  disableEventListeners() {\n    return disableEventListeners.call(this);\n  }\n\n  /**\n   * Schedule an update, it will run on the next UI update available\n   * @method scheduleUpdate\n   * @memberof Popper\n   */\n  scheduleUpdate = () => requestAnimationFrame(this.update);\n\n  /**\n   * Collection of utilities useful when writing custom modifiers.\n   * Starting from version 1.7, this method is available only if you\n   * include `popper-utils.js` before `popper.js`.\n   *\n   * **DEPRECATION**: This way to access PopperUtils is deprecated\n   * and will be removed in v2! Use the PopperUtils module directly instead.\n   * Due to the high instability of the methods contained in Utils, we can't\n   * guarantee them to follow semver. Use them at your own risk!\n   * @static\n   * @private\n   * @type {Object}\n   * @deprecated since version 1.8\n   * @member Utils\n   * @memberof Popper\n   */\n  static Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\n\n  static placements = placements;\n\n  static Defaults = Defaults;\n}\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.<br />\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n 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\ No newline at end of file
diff --git a/dist/popper.min.js b/dist/popper.min.js
new file mode 100644
index 0000000..9f3d58f
--- /dev/null
+++ b/dist/popper.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2017
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
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t=e.placement,o=t.split('-')[0],{popper:n,reference:i}=e.offsets,r=-1!==['left','right'].indexOf(o),p=-1===['top','left'].indexOf(o);return n[r?'left':'top']=i[o]-(p?n[r?'width':'height']:0),e.placement=P(t),e.offsets.popper=x(n),e}var ge={shift:{order:100,enabled:!0,fn:he},offset:{order:200,enabled:!0,fn:le,offset:0},preventOverflow:{order:300,enabled:!0,fn:me,priority:['left','right','top','bottom'],padding:5,boundariesElement:'scrollParent'},keepTogether:{order:400,enabled:!0,fn:se},arrow:{order:500,enabled:!0,fn:te,element:'[x-arrow]'},flip:{order:600,enabled:!0,fn:de,behavior:'flip',padding:5,boundariesElement:'viewport'},inner:{order:700,enabled:!1,fn:ue},hide:{order:800,enabled:!0,fn:ce},computeStyle:{order:850,enabled:!0,fn:Q,gpuAcceleration:!0,x:'bottom',y:'right'},applyStyle:{order:900,enabled:!0,fn:Z,onLoad:$,gpuAcceleration:void 0}},be={placement:'bottom',eventsEnabled:!0,removeOnDestroy:!1,onCreate:()=>{},onUpdate:()=>{},modifiers:ge};class we{constructor(e,t,o={}){this.scheduleUpdate=()=>requestAnimationFrame(this.update),this.update=p(this.update.bind(this)),this.options=O({},we.Defaults,o),this.state={isDestroyed:!1,isCreated:!1,scrollParents:[]},this.reference=e&&e.jquery?e[0]:e,this.popper=t&&t.jquery?t[0]:t,this.options.modifiers={},Object.keys(O({},we.Defaults.modifiers,o.modifiers)).forEach((e)=>{this.options.modifiers[e]=O({},we.Defaults.modifiers[e]||{},o.modifiers?o.modifiers[e]:{})}),this.modifiers=Object.keys(this.options.modifiers).map((e)=>O({name:e},this.options.modifiers[e])).sort((e,t)=>e.order-t.order),this.modifiers.forEach((e)=>{e.enabled&&d(e.onLoad)&&e.onLoad(this.reference,this.popper,this.options,e,this.state)}),this.update();const n=this.options.eventsEnabled;n&&this.enableEventListeners(),this.state.eventsEnabled=n}update(){return R.call(this)}destroy(){return F.call(this)}enableEventListeners(){return G.call(this)}disableEventListeners(){return q.call(this)}}we.Utils=('undefined'==typeof window?global:window).PopperUtils,we.placements=ne,we.Defaults=be;export default we;
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diff --git a/dist/popper.min.js.map b/dist/popper.min.js.map
new file mode 100644
index 0000000..daaa4ef
--- /dev/null
+++ b/dist/popper.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.min.js","sources":["../src/utils/debounce.js","../src/utils/isFunction.js","../src/utils/getStyleComputedProperty.js","../src/utils/getParentNode.js","../src/utils/getScrollParent.js","../src/utils/getOffsetParent.js","../src/utils/isOffsetContainer.js","../src/utils/getRoot.js","../src/utils/findCommonOffsetParent.js","../src/utils/getScroll.js","../src/utils/includeScroll.js","../src/utils/getBordersSize.js","../src/utils/isIE10.js","../src/utils/getWindowSizes.js","../src/utils/getClientRect.js","../src/utils/getBoundingClientRect.js","../src/utils/getOffsetRectRelativeToArbitraryNode.js","../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../src/utils/isFixed.js","../src/utils/getBoundaries.js","../src/utils/computeAutoPlacement.js","../src/utils/getReferenceOffsets.js","../src/utils/getOuterSizes.js","../src/utils/getOppositePlacement.js","../src/utils/getPopperOffsets.js","../src/utils/find.js","../src/utils/findIndex.js","../src/utils/runModifiers.js","../src/methods/update.js","../src/utils/isModifierEnabled.js","../src/utils/getSupportedPropertyName.js","../src/methods/destroy.js","../src/utils/getWindow.js","../src/utils/setupEventListeners.js","../src/methods/enableEventListeners.js","../src/utils/removeEventListeners.js","../src/methods/disableEventListeners.js","../src/utils/isNumeric.js","../src/utils/setStyles.js","../src/utils/setAttributes.js","../src/modifiers/applyStyle.js","../src/modifiers/computeStyle.js","../src/utils/isModifierRequired.js","../src/modifiers/arrow.js","../src/utils/getOppositeVariation.js","../src/methods/placements.js","../src/utils/clockwise.js","../src/modifiers/flip.js","../src/modifiers/keepTogether.js","../src/modifiers/offset.js","../src/modifiers/preventOverflow.js","../src/modifiers/shift.js","../src/modifiers/hide.js","../src/modifiers/inner.js","../src/modifiers/index.js","../src/methods/defaults.js","../src/index.js"],"sourcesContent":["const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n  data.offsets.popper.position = 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroy the popper\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicity asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper.\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n  reference,\n  popper,\n  options,\n  modifierOptions,\n  state\n) {\n  // compute reference element offsets\n  const referenceOffsets = getReferenceOffsets(state, popper, reference);\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  const placement = computeAutoPlacement(\n    options.placement,\n    referenceOffsets,\n    popper,\n    reference,\n    options.modifiers.flip.boundariesElement,\n    options.modifiers.flip.padding\n  );\n\n  popper.setAttribute('x-placement', placement);\n\n  // Apply `position` to popper before anything else because\n  // without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: 'absolute' });\n\n  return options;\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  // floor sides to avoid blurry text\n  const offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right),\n  };\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjuction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.<br />\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br />\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-right` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n  'auto-start',\n  'auto',\n  'auto-end',\n  'top-start',\n  'top',\n  'top-end',\n  'right-start',\n  'right',\n  'right-end',\n  'bottom-end',\n  'bottom',\n  'bottom-start',\n  'left-end',\n  'left',\n  'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    const flippedVariation =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement\n  );\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side = ['left', 'top'].indexOf(placement) !== -1\n      ? 'primary'\n      : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     */\n    boundariesElement: 'viewport',\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overriden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper\n   * @param {HTMLElement} popper - The HTML element used as popper.\n   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n   * @return {Object} instance - The generated Popper.js instance\n   */\n  constructor(reference, popper, options = {}) {\n    // make update() debounced, so that it only runs at most once-per-tick\n    this.update = debounce(this.update.bind(this));\n\n    // with {} we create a new object with the options inside it\n    this.options = { ...Popper.Defaults, ...options };\n\n    // init state\n    this.state = {\n      isDestroyed: false,\n      isCreated: false,\n      scrollParents: [],\n    };\n\n    // get reference and popper elements (allow jQuery wrappers)\n    this.reference = reference && reference.jquery ? reference[0] : reference;\n    this.popper = popper && popper.jquery ? popper[0] : popper;\n\n    // Deep merge modifiers options\n    this.options.modifiers = {};\n    Object.keys({\n      ...Popper.Defaults.modifiers,\n      ...options.modifiers,\n    }).forEach(name => {\n      this.options.modifiers[name] = {\n        // If it's a built-in modifier, use it as base\n        ...(Popper.Defaults.modifiers[name] || {}),\n        // If there are custom options, override and merge with default ones\n        ...(options.modifiers ? options.modifiers[name] : {}),\n      };\n    });\n\n    // Refactoring modifiers' list (Object => Array)\n    this.modifiers = Object.keys(this.options.modifiers)\n      .map(name => ({\n        name,\n        ...this.options.modifiers[name],\n      }))\n      // sort the modifiers by order\n      .sort((a, b) => a.order - b.order);\n\n    // modifiers have the ability to execute arbitrary code when Popper.js get inited\n    // such code is executed in the same order of its modifier\n    // they could add new properties to their options configuration\n    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n    this.modifiers.forEach(modifierOptions => {\n      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n        modifierOptions.onLoad(\n          this.reference,\n          this.popper,\n          this.options,\n          modifierOptions,\n          this.state\n        );\n      }\n    });\n\n    // fire the first update to position the popper in the right place\n    this.update();\n\n    const eventsEnabled = this.options.eventsEnabled;\n    if (eventsEnabled) {\n      // setup event listeners, they will take care of update the position in specific situations\n      this.enableEventListeners();\n    }\n\n    this.state.eventsEnabled = eventsEnabled;\n  }\n\n  // We can't use class properties because they don't get listed in the\n  // class prototype and break stuff like Sinon stubs\n  update() {\n    return update.call(this);\n  }\n  destroy() {\n    return destroy.call(this);\n  }\n  enableEventListeners() {\n    return enableEventListeners.call(this);\n  }\n  disableEventListeners() {\n    return disableEventListeners.call(this);\n  }\n\n  /**\n   * Schedule an update, it will run on the next UI update available\n   * @method scheduleUpdate\n   * @memberof Popper\n   */\n  scheduleUpdate = () => requestAnimationFrame(this.update);\n\n  /**\n   * Collection of utilities useful when writing custom modifiers.\n   * Starting from version 1.7, this method is available only if you\n   * include `popper-utils.js` before `popper.js`.\n   *\n   * **DEPRECATION**: This way to access PopperUtils is deprecated\n   * and will be removed in v2! Use the PopperUtils module directly instead.\n   * Due to the high instability of the methods contained in Utils, we can't\n   * guarantee them to follow semver. Use them at your own risk!\n   * @static\n   * @private\n   * @type {Object}\n   * @deprecated since version 1.8\n   * @member Utils\n   * @memberof Popper\n   */\n  static Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\n\n  static placements = placements;\n\n  static Defaults = Defaults;\n}\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.<br />\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter 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\ No newline at end of file
diff --git a/dist/umd/popper-utils.js b/dist/umd/popper-utils.js
new file mode 100644
index 0000000..622c375
--- /dev/null
+++ b/dist/umd/popper-utils.js
@@ -0,0 +1,1082 @@
+/**!
+ * @fileOverview Kickass library to create and place poppers near their reference elements.
+ * @version 1.12.9
+ * @license
+ * Copyright (c) 2016 Federico Zivolo and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+	typeof define === 'function' && define.amd ? define(['exports'], factory) :
+	(factory((global.PopperUtils = {})));
+}(this, (function (exports) { 'use strict';
+
+/**
+ * Get CSS computed property of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Eement} element
+ * @argument {String} property
+ */
+function getStyleComputedProperty(element, property) {
+  if (element.nodeType !== 1) {
+    return [];
+  }
+  // NOTE: 1 DOM access here
+  var css = getComputedStyle(element, null);
+  return property ? css[property] : css;
+}
+
+/**
+ * Returns the parentNode or the host of the element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} parent
+ */
+function getParentNode(element) {
+  if (element.nodeName === 'HTML') {
+    return element;
+  }
+  return element.parentNode || element.host;
+}
+
+/**
+ * Returns the scrolling parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} scroll parent
+ */
+function getScrollParent(element) {
+  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
+  if (!element) {
+    return document.body;
+  }
+
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
+  // Firefox want us to check `-x` and `-y` variations as well
+
+  var _getStyleComputedProp = getStyleComputedProperty(element),
+      overflow = _getStyleComputedProp.overflow,
+      overflowX = _getStyleComputedProp.overflowX,
+      overflowY = _getStyleComputedProp.overflowY;
+
+  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
+    return element;
+  }
+
+  return getScrollParent(getParentNode(element));
+}
+
+/**
+ * Returns the offset parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} offset parent
+ */
+function getOffsetParent(element) {
+  // NOTE: 1 DOM access here
+  var offsetParent = element && element.offsetParent;
+  var nodeName = offsetParent && offsetParent.nodeName;
+
+  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
+    return document.documentElement;
+  }
+
+  // .offsetParent will return the closest TD or TABLE in case
+  // no offsetParent is present, I hate this job...
+  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+    return getOffsetParent(offsetParent);
+  }
+
+  return offsetParent;
+}
+
+function isOffsetContainer(element) {
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY') {
+    return false;
+  }
+  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
+}
+
+/**
+ * Finds the root node (document, shadowDOM root) of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} node
+ * @returns {Element} root node
+ */
+function getRoot(node) {
+  if (node.parentNode !== null) {
+    return getRoot(node.parentNode);
+  }
+
+  return node;
+}
+
+/**
+ * Finds the offset parent common to the two provided nodes
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element1
+ * @argument {Element} element2
+ * @returns {Element} common offset parent
+ */
+function findCommonOffsetParent(element1, element2) {
+  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
+  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
+    return document.documentElement;
+  }
+
+  // Here we make sure to give as "start" the element that comes first in the DOM
+  var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
+  var start = order ? element1 : element2;
+  var end = order ? element2 : element1;
+
+  // Get common ancestor container
+  var range = document.createRange();
+  range.setStart(start, 0);
+  range.setEnd(end, 0);
+  var commonAncestorContainer = range.commonAncestorContainer;
+
+  // Both nodes are inside #document
+
+  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
+    if (isOffsetContainer(commonAncestorContainer)) {
+      return commonAncestorContainer;
+    }
+
+    return getOffsetParent(commonAncestorContainer);
+  }
+
+  // one of the nodes is inside shadowDOM, find which one
+  var element1root = getRoot(element1);
+  if (element1root.host) {
+    return findCommonOffsetParent(element1root.host, element2);
+  } else {
+    return findCommonOffsetParent(element1, getRoot(element2).host);
+  }
+}
+
+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+function getScroll(element) {
+  var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
+
+  var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    var html = element.ownerDocument.documentElement;
+    var scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}
+
+/*
+ * Sum or subtract the element scroll values (left and top) from a given rect object
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} rect - Rect object you want to change
+ * @param {HTMLElement} element - The element from the function reads the scroll values
+ * @param {Boolean} subtract - set to true if you want to subtract the scroll values
+ * @return {Object} rect - The modifier rect object
+ */
+function includeScroll(rect, element) {
+  var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
+
+  var scrollTop = getScroll(element, 'top');
+  var scrollLeft = getScroll(element, 'left');
+  var modifier = subtract ? -1 : 1;
+  rect.top += scrollTop * modifier;
+  rect.bottom += scrollTop * modifier;
+  rect.left += scrollLeft * modifier;
+  rect.right += scrollLeft * modifier;
+  return rect;
+}
+
+/*
+ * Helper to detect borders of a given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {CSSStyleDeclaration} styles
+ * Result of `getStyleComputedProperty` on the given element
+ * @param {String} axis - `x` or `y`
+ * @return {number} borders - The borders size of the given axis
+ */
+
+function getBordersSize(styles, axis) {
+  var sideA = axis === 'x' ? 'Left' : 'Top';
+  var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
+
+  return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
+}
+
+/**
+ * Tells if you are running Internet Explorer 10
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean} isIE10
+ */
+var isIE10 = undefined;
+
+var isIE10$1 = function () {
+  if (isIE10 === undefined) {
+    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
+  }
+  return isIE10;
+};
+
+function getSize(axis, body, html, computedStyle) {
+  return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0);
+}
+
+function getWindowSizes() {
+  var body = document.body;
+  var html = document.documentElement;
+  var computedStyle = isIE10$1() && getComputedStyle(html);
+
+  return {
+    height: getSize('Height', body, html, computedStyle),
+    width: getSize('Width', body, html, computedStyle)
+  };
+}
+
+var _extends = Object.assign || function (target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+
+  return target;
+};
+
+/**
+ * Given element offsets, generate an output similar to getBoundingClientRect
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} offsets
+ * @returns {Object} ClientRect like output
+ */
+function getClientRect(offsets) {
+  return _extends({}, offsets, {
+    right: offsets.left + offsets.width,
+    bottom: offsets.top + offsets.height
+  });
+}
+
+/**
+ * Get bounding client rect of given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} element
+ * @return {Object} client rect
+ */
+function getBoundingClientRect(element) {
+  var rect = {};
+
+  // IE10 10 FIX: Please, don't ask, the element isn't
+  // considered in DOM in some circumstances...
+  // This isn't reproducible in IE10 compatibility mode of IE11
+  if (isIE10$1()) {
+    try {
+      rect = element.getBoundingClientRect();
+      var scrollTop = getScroll(element, 'top');
+      var scrollLeft = getScroll(element, 'left');
+      rect.top += scrollTop;
+      rect.left += scrollLeft;
+      rect.bottom += scrollTop;
+      rect.right += scrollLeft;
+    } catch (err) {}
+  } else {
+    rect = element.getBoundingClientRect();
+  }
+
+  var result = {
+    left: rect.left,
+    top: rect.top,
+    width: rect.right - rect.left,
+    height: rect.bottom - rect.top
+  };
+
+  // subtract scrollbar size from sizes
+  var sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
+  var width = sizes.width || element.clientWidth || result.right - result.left;
+  var height = sizes.height || element.clientHeight || result.bottom - result.top;
+
+  var horizScrollbar = element.offsetWidth - width;
+  var vertScrollbar = element.offsetHeight - height;
+
+  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
+  // we make this check conditional for performance reasons
+  if (horizScrollbar || vertScrollbar) {
+    var styles = getStyleComputedProperty(element);
+    horizScrollbar -= getBordersSize(styles, 'x');
+    vertScrollbar -= getBordersSize(styles, 'y');
+
+    result.width -= horizScrollbar;
+    result.height -= vertScrollbar;
+  }
+
+  return getClientRect(result);
+}
+
+function getOffsetRectRelativeToArbitraryNode(children, parent) {
+  var isIE10 = isIE10$1();
+  var isHTML = parent.nodeName === 'HTML';
+  var childrenRect = getBoundingClientRect(children);
+  var parentRect = getBoundingClientRect(parent);
+  var scrollParent = getScrollParent(children);
+
+  var styles = getStyleComputedProperty(parent);
+  var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
+  var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
+
+  var offsets = getClientRect({
+    top: childrenRect.top - parentRect.top - borderTopWidth,
+    left: childrenRect.left - parentRect.left - borderLeftWidth,
+    width: childrenRect.width,
+    height: childrenRect.height
+  });
+  offsets.marginTop = 0;
+  offsets.marginLeft = 0;
+
+  // Subtract margins of documentElement in case it's being used as parent
+  // we do this only on HTML because it's the only element that behaves
+  // differently when margins are applied to it. The margins are included in
+  // the box of the documentElement, in the other cases not.
+  if (!isIE10 && isHTML) {
+    var marginTop = parseFloat(styles.marginTop, 10);
+    var marginLeft = parseFloat(styles.marginLeft, 10);
+
+    offsets.top -= borderTopWidth - marginTop;
+    offsets.bottom -= borderTopWidth - marginTop;
+    offsets.left -= borderLeftWidth - marginLeft;
+    offsets.right -= borderLeftWidth - marginLeft;
+
+    // Attach marginTop and marginLeft because in some circumstances we may need them
+    offsets.marginTop = marginTop;
+    offsets.marginLeft = marginLeft;
+  }
+
+  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
+    offsets = includeScroll(offsets, parent);
+  }
+
+  return offsets;
+}
+
+function getViewportOffsetRectRelativeToArtbitraryNode(element) {
+  var html = element.ownerDocument.documentElement;
+  var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
+  var width = Math.max(html.clientWidth, window.innerWidth || 0);
+  var height = Math.max(html.clientHeight, window.innerHeight || 0);
+
+  var scrollTop = getScroll(html);
+  var scrollLeft = getScroll(html, 'left');
+
+  var offset = {
+    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
+    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
+    width: width,
+    height: height
+  };
+
+  return getClientRect(offset);
+}
+
+/**
+ * Check if the given element is fixed or is inside a fixed parent
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {Element} customContainer
+ * @returns {Boolean} answer to "isFixed?"
+ */
+function isFixed(element) {
+  var nodeName = element.nodeName;
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    return false;
+  }
+  if (getStyleComputedProperty(element, 'position') === 'fixed') {
+    return true;
+  }
+  return isFixed(getParentNode(element));
+}
+
+/**
+ * Computed the boundaries limits and return them
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} popper
+ * @param {HTMLElement} reference
+ * @param {number} padding
+ * @param {HTMLElement} boundariesElement - Element used to define the boundaries
+ * @returns {Object} Coordinates of the boundaries
+ */
+function getBoundaries(popper, reference, padding, boundariesElement) {
+  // NOTE: 1 DOM access here
+  var boundaries = { top: 0, left: 0 };
+  var offsetParent = findCommonOffsetParent(popper, reference);
+
+  // Handle viewport case
+  if (boundariesElement === 'viewport') {
+    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
+  } else {
+    // Handle other cases based on DOM element used as boundaries
+    var boundariesNode = void 0;
+    if (boundariesElement === 'scrollParent') {
+      boundariesNode = getScrollParent(getParentNode(reference));
+      if (boundariesNode.nodeName === 'BODY') {
+        boundariesNode = popper.ownerDocument.documentElement;
+      }
+    } else if (boundariesElement === 'window') {
+      boundariesNode = popper.ownerDocument.documentElement;
+    } else {
+      boundariesNode = boundariesElement;
+    }
+
+    var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
+
+    // In case of HTML, we need a different computation
+    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
+      var _getWindowSizes = getWindowSizes(),
+          height = _getWindowSizes.height,
+          width = _getWindowSizes.width;
+
+      boundaries.top += offsets.top - offsets.marginTop;
+      boundaries.bottom = height + offsets.top;
+      boundaries.left += offsets.left - offsets.marginLeft;
+      boundaries.right = width + offsets.left;
+    } else {
+      // for all the other DOM elements, this one is good
+      boundaries = offsets;
+    }
+  }
+
+  // Add paddings
+  boundaries.left += padding;
+  boundaries.top += padding;
+  boundaries.right -= padding;
+  boundaries.bottom -= padding;
+
+  return boundaries;
+}
+
+function getArea(_ref) {
+  var width = _ref.width,
+      height = _ref.height;
+
+  return width * height;
+}
+
+/**
+ * Utility used to transform the `auto` placement to the placement with more
+ * available space.
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
+  var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
+
+  if (placement.indexOf('auto') === -1) {
+    return placement;
+  }
+
+  var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
+
+  var rects = {
+    top: {
+      width: boundaries.width,
+      height: refRect.top - boundaries.top
+    },
+    right: {
+      width: boundaries.right - refRect.right,
+      height: boundaries.height
+    },
+    bottom: {
+      width: boundaries.width,
+      height: boundaries.bottom - refRect.bottom
+    },
+    left: {
+      width: refRect.left - boundaries.left,
+      height: boundaries.height
+    }
+  };
+
+  var sortedAreas = Object.keys(rects).map(function (key) {
+    return _extends({
+      key: key
+    }, rects[key], {
+      area: getArea(rects[key])
+    });
+  }).sort(function (a, b) {
+    return b.area - a.area;
+  });
+
+  var filteredAreas = sortedAreas.filter(function (_ref2) {
+    var width = _ref2.width,
+        height = _ref2.height;
+    return width >= popper.clientWidth && height >= popper.clientHeight;
+  });
+
+  var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
+
+  var variation = placement.split('-')[1];
+
+  return computedPlacement + (variation ? '-' + variation : '');
+}
+
+var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
+var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
+var timeoutDuration = 0;
+for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
+  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
+    timeoutDuration = 1;
+    break;
+  }
+}
+
+function microtaskDebounce(fn) {
+  var called = false;
+  return function () {
+    if (called) {
+      return;
+    }
+    called = true;
+    window.Promise.resolve().then(function () {
+      called = false;
+      fn();
+    });
+  };
+}
+
+function taskDebounce(fn) {
+  var scheduled = false;
+  return function () {
+    if (!scheduled) {
+      scheduled = true;
+      setTimeout(function () {
+        scheduled = false;
+        fn();
+      }, timeoutDuration);
+    }
+  };
+}
+
+var supportsMicroTasks = isBrowser && window.Promise;
+
+/**
+* Create a debounced version of a method, that's asynchronously deferred
+* but called in the minimum time possible.
+*
+* @method
+* @memberof Popper.Utils
+* @argument {Function} fn
+* @returns {Function}
+*/
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
+
+/**
+ * Mimics the `find` method of Array
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function find(arr, check) {
+  // use native find if supported
+  if (Array.prototype.find) {
+    return arr.find(check);
+  }
+
+  // use `filter` to obtain the same behavior of `find`
+  return arr.filter(check)[0];
+}
+
+/**
+ * Return the index of the matching object
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function findIndex(arr, prop, value) {
+  // use native findIndex if supported
+  if (Array.prototype.findIndex) {
+    return arr.findIndex(function (cur) {
+      return cur[prop] === value;
+    });
+  }
+
+  // use `find` + `indexOf` if `findIndex` isn't supported
+  var match = find(arr, function (obj) {
+    return obj[prop] === value;
+  });
+  return arr.indexOf(match);
+}
+
+/**
+ * Get the position of the given element, relative to its offset parent
+ * @method
+ * @memberof Popper.Utils
+ * @param {Element} element
+ * @return {Object} position - Coordinates of the element and its `scrollTop`
+ */
+function getOffsetRect(element) {
+  var elementRect = void 0;
+  if (element.nodeName === 'HTML') {
+    var _getWindowSizes = getWindowSizes(),
+        width = _getWindowSizes.width,
+        height = _getWindowSizes.height;
+
+    elementRect = {
+      width: width,
+      height: height,
+      left: 0,
+      top: 0
+    };
+  } else {
+    elementRect = {
+      width: element.offsetWidth,
+      height: element.offsetHeight,
+      left: element.offsetLeft,
+      top: element.offsetTop
+    };
+  }
+
+  // position
+  return getClientRect(elementRect);
+}
+
+/**
+ * Get the outer sizes of the given element (offset size + margins)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Object} object containing width and height properties
+ */
+function getOuterSizes(element) {
+  var styles = getComputedStyle(element);
+  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
+  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  var result = {
+    width: element.offsetWidth + y,
+    height: element.offsetHeight + x
+  };
+  return result;
+}
+
+/**
+ * Get the opposite placement of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement
+ * @returns {String} flipped placement
+ */
+function getOppositePlacement(placement) {
+  var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash[matched];
+  });
+}
+
+/**
+ * Get offsets to the popper
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} position - CSS position the Popper will get applied
+ * @param {HTMLElement} popper - the popper element
+ * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
+ * @param {String} placement - one of the valid placement options
+ * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
+ */
+function getPopperOffsets(popper, referenceOffsets, placement) {
+  placement = placement.split('-')[0];
+
+  // Get popper node sizes
+  var popperRect = getOuterSizes(popper);
+
+  // Add position, width and height to our offsets object
+  var popperOffsets = {
+    width: popperRect.width,
+    height: popperRect.height
+  };
+
+  // depending by the popper placement we have to compute its offsets slightly differently
+  var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
+  var mainSide = isHoriz ? 'top' : 'left';
+  var secondarySide = isHoriz ? 'left' : 'top';
+  var measurement = isHoriz ? 'height' : 'width';
+  var secondaryMeasurement = !isHoriz ? 'height' : 'width';
+
+  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
+  if (placement === secondarySide) {
+    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
+  } else {
+    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
+  }
+
+  return popperOffsets;
+}
+
+/**
+ * Get offsets to the reference element
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} state
+ * @param {Element} popper - the popper element
+ * @param {Element} reference - the reference element (the popper will be relative to this)
+ * @returns {Object} An object containing the offsets which will be applied to the popper
+ */
+function getReferenceOffsets(state, popper, reference) {
+  var commonOffsetParent = findCommonOffsetParent(popper, reference);
+  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
+}
+
+/**
+ * Get the prefixed supported property name
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} property (camelCase)
+ * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
+ */
+function getSupportedPropertyName(property) {
+  var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
+  var upperProp = property.charAt(0).toUpperCase() + property.slice(1);
+
+  for (var i = 0; i < prefixes.length - 1; i++) {
+    var prefix = prefixes[i];
+    var toCheck = prefix ? '' + prefix + upperProp : property;
+    if (typeof document.body.style[toCheck] !== 'undefined') {
+      return toCheck;
+    }
+  }
+  return null;
+}
+
+/**
+ * Check if the given variable is a function
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Any} functionToCheck - variable to check
+ * @returns {Boolean} answer to: is a function?
+ */
+function isFunction(functionToCheck) {
+  var getType = {};
+  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+}
+
+/**
+ * Helper used to know if the given modifier is enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean}
+ */
+function isModifierEnabled(modifiers, modifierName) {
+  return modifiers.some(function (_ref) {
+    var name = _ref.name,
+        enabled = _ref.enabled;
+    return enabled && name === modifierName;
+  });
+}
+
+/**
+ * Helper used to know if the given modifier depends from another one.<br />
+ * It checks if the needed modifier is listed and enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @param {Array} modifiers - list of modifiers
+ * @param {String} requestingName - name of requesting modifier
+ * @param {String} requestedName - name of requested modifier
+ * @returns {Boolean}
+ */
+function isModifierRequired(modifiers, requestingName, requestedName) {
+  var requesting = find(modifiers, function (_ref) {
+    var name = _ref.name;
+    return name === requestingName;
+  });
+
+  var isRequired = !!requesting && modifiers.some(function (modifier) {
+    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
+  });
+
+  if (!isRequired) {
+    var _requesting = '`' + requestingName + '`';
+    var requested = '`' + requestedName + '`';
+    console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
+  }
+  return isRequired;
+}
+
+/**
+ * Tells if a given input is a number
+ * @method
+ * @memberof Popper.Utils
+ * @param {*} input to check
+ * @return {Boolean}
+ */
+function isNumeric(n) {
+  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
+}
+
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  var ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
+/**
+ * Remove event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function removeEventListeners(reference, state) {
+  // Remove resize event listener on window
+  getWindow(reference).removeEventListener('resize', state.updateBound);
+
+  // Remove scroll event listener on scroll parents
+  state.scrollParents.forEach(function (target) {
+    target.removeEventListener('scroll', state.updateBound);
+  });
+
+  // Reset state
+  state.updateBound = null;
+  state.scrollParents = [];
+  state.scrollElement = null;
+  state.eventsEnabled = false;
+  return state;
+}
+
+/**
+ * Loop trough the list of modifiers and run them in order,
+ * each of them will then edit the data object.
+ * @method
+ * @memberof Popper.Utils
+ * @param {dataObject} data
+ * @param {Array} modifiers
+ * @param {String} ends - Optional modifier name used as stopper
+ * @returns {dataObject}
+ */
+function runModifiers(modifiers, data, ends) {
+  var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
+
+  modifiersToRun.forEach(function (modifier) {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
+      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
+    }
+    var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
+    if (modifier.enabled && isFunction(fn)) {
+      // Add properties to offsets to make them a complete clientRect object
+      // we do this before each modifier to make sure the previous one doesn't
+      // mess with these values
+      data.offsets.popper = getClientRect(data.offsets.popper);
+      data.offsets.reference = getClientRect(data.offsets.reference);
+
+      data = fn(data, modifier);
+    }
+  });
+
+  return data;
+}
+
+/**
+ * Set the attributes to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the attributes to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setAttributes(element, attributes) {
+  Object.keys(attributes).forEach(function (prop) {
+    var value = attributes[prop];
+    if (value !== false) {
+      element.setAttribute(prop, attributes[prop]);
+    } else {
+      element.removeAttribute(prop);
+    }
+  });
+}
+
+/**
+ * Set the style to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the style to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setStyles(element, styles) {
+  Object.keys(styles).forEach(function (prop) {
+    var unit = '';
+    // add unit if the value is numeric and is one of the following
+    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
+      unit = 'px';
+    }
+    element.style[prop] = styles[prop] + unit;
+  });
+}
+
+function attachToScrollParents(scrollParent, event, callback, scrollParents) {
+  var isBody = scrollParent.nodeName === 'BODY';
+  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
+  target.addEventListener(event, callback, { passive: true });
+
+  if (!isBody) {
+    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
+  }
+  scrollParents.push(target);
+}
+
+/**
+ * Setup needed event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function setupEventListeners(reference, options, state, updateBound) {
+  // Resize event listener on window
+  state.updateBound = updateBound;
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
+
+  // Scroll event listener on scroll parents
+  var scrollElement = getScrollParent(reference);
+  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
+  state.scrollElement = scrollElement;
+  state.eventsEnabled = true;
+
+  return state;
+}
+
+// This is here just for backward compatibility with versions lower than v1.10.3
+// you should import the utilities using named exports, if you want them all use:
+// ```
+// import * as PopperUtils from 'popper-utils';
+// ```
+// The default export will be removed in the next major version.
+var index = {
+  computeAutoPlacement: computeAutoPlacement,
+  debounce: debounce,
+  findIndex: findIndex,
+  getBordersSize: getBordersSize,
+  getBoundaries: getBoundaries,
+  getBoundingClientRect: getBoundingClientRect,
+  getClientRect: getClientRect,
+  getOffsetParent: getOffsetParent,
+  getOffsetRect: getOffsetRect,
+  getOffsetRectRelativeToArbitraryNode: getOffsetRectRelativeToArbitraryNode,
+  getOuterSizes: getOuterSizes,
+  getParentNode: getParentNode,
+  getPopperOffsets: getPopperOffsets,
+  getReferenceOffsets: getReferenceOffsets,
+  getScroll: getScroll,
+  getScrollParent: getScrollParent,
+  getStyleComputedProperty: getStyleComputedProperty,
+  getSupportedPropertyName: getSupportedPropertyName,
+  getWindowSizes: getWindowSizes,
+  isFixed: isFixed,
+  isFunction: isFunction,
+  isModifierEnabled: isModifierEnabled,
+  isModifierRequired: isModifierRequired,
+  isNumeric: isNumeric,
+  removeEventListeners: removeEventListeners,
+  runModifiers: runModifiers,
+  setAttributes: setAttributes,
+  setStyles: setStyles,
+  setupEventListeners: setupEventListeners
+};
+
+exports.computeAutoPlacement = computeAutoPlacement;
+exports.debounce = debounce;
+exports.findIndex = findIndex;
+exports.getBordersSize = getBordersSize;
+exports.getBoundaries = getBoundaries;
+exports.getBoundingClientRect = getBoundingClientRect;
+exports.getClientRect = getClientRect;
+exports.getOffsetParent = getOffsetParent;
+exports.getOffsetRect = getOffsetRect;
+exports.getOffsetRectRelativeToArbitraryNode = getOffsetRectRelativeToArbitraryNode;
+exports.getOuterSizes = getOuterSizes;
+exports.getParentNode = getParentNode;
+exports.getPopperOffsets = getPopperOffsets;
+exports.getReferenceOffsets = getReferenceOffsets;
+exports.getScroll = getScroll;
+exports.getScrollParent = getScrollParent;
+exports.getStyleComputedProperty = getStyleComputedProperty;
+exports.getSupportedPropertyName = getSupportedPropertyName;
+exports.getWindowSizes = getWindowSizes;
+exports.isFixed = isFixed;
+exports.isFunction = isFunction;
+exports.isModifierEnabled = isModifierEnabled;
+exports.isModifierRequired = isModifierRequired;
+exports.isNumeric = isNumeric;
+exports.removeEventListeners = removeEventListeners;
+exports.runModifiers = runModifiers;
+exports.setAttributes = setAttributes;
+exports.setStyles = setStyles;
+exports.setupEventListeners = setupEventListeners;
+exports['default'] = index;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=popper-utils.js.map
diff --git a/dist/umd/popper-utils.js.map b/dist/umd/popper-utils.js.map
new file mode 100644
index 0000000..c7bc4b5
--- /dev/null
+++ b/dist/umd/popper-utils.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-utils.js","sources":["../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/isIE10.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/debounce.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/getOffsetRect.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getSupportedPropertyName.js","../../src/utils/isFunction.js","../../src/utils/isModifierEnabled.js","../../src/utils/isModifierRequired.js","../../src/utils/isNumeric.js","../../src/utils/getWindow.js","../../src/utils/removeEventListeners.js","../../src/utils/runModifiers.js","../../src/utils/setAttributes.js","../../src/utils/setStyles.js","../../src/utils/setupEventListeners.js","../../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n  let elementRect;\n  if (element.nodeName === 'HTML') {\n    const { width, height } = getWindowSizes();\n    elementRect = {\n      width,\n      height,\n      left: 0,\n      top: 0,\n    };\n  } else {\n    elementRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight,\n      left: element.offsetLeft,\n      top: element.offsetTop,\n    };\n  }\n\n  // position\n  return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from './isModifierEnabled';\nimport isModifierRequired from './isModifierRequired';\nimport isNumeric from './isNumeric';\nimport removeEventListeners from './removeEventListeners';\nimport runModifiers from './runModifiers';\nimport setAttributes from './setAttributes';\nimport setStyles from './setStyles';\nimport setupEventListeners from './setupEventListeners';\n\n/** @namespace Popper.Utils */\nexport {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  setupEventListeners,\n};\n\n// This is here just for backward compatibility with versions lower than v1.10.3\n// you should import the utilities using named exports, if you want them all use:\n// ```\n// import * as PopperUtils from 'popper-utils';\n// ```\n// The default export will be removed in the next major version.\nexport default {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  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\ No newline at end of file
diff --git a/dist/umd/popper-utils.min.js b/dist/umd/popper-utils.min.js
new file mode 100644
index 0000000..20c01da
--- /dev/null
+++ b/dist/umd/popper-utils.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2017
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
+ */(function(a,b){'object'==typeof exports&&'undefined'!=typeof module?b(exports):'function'==typeof define&&define.amd?define(['exports'],b):b(a.PopperUtils={})})(this,function(a){'use strict';function b(a,b){if(1!==a.nodeType)return[];var c=getComputedStyle(a,null);return b?c[b]:c}function c(a){return'HTML'===a.nodeName?a:a.parentNode||a.host}function d(a){if(!a)return document.body;switch(a.nodeName){case'HTML':case'BODY':return a.ownerDocument.body;case'#document':return a.body;}var e=b(a),f=e.overflow,g=e.overflowX,h=e.overflowY;return /(auto|scroll)/.test(f+h+g)?a:d(c(a))}function e(a){var c=a&&a.offsetParent,d=c&&c.nodeName;return d&&'BODY'!==d&&'HTML'!==d?-1!==['TD','TABLE'].indexOf(c.nodeName)&&'static'===b(c,'position')?e(c):c:a?a.ownerDocument.documentElement:document.documentElement}function f(a){var b=a.nodeName;return'BODY'!==b&&('HTML'===b||e(a.firstElementChild)===a)}function g(a){return null===a.parentNode?a:g(a.parentNode)}function 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diff --git a/dist/umd/popper-utils.min.js.map b/dist/umd/popper-utils.min.js.map
new file mode 100644
index 0000000..17f3f74
--- /dev/null
+++ b/dist/umd/popper-utils.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-utils.min.js","sources":["../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/getOffsetRect.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getSupportedPropertyName.js","../../src/utils/isFunction.js","../../src/utils/isModifierEnabled.js","../../src/utils/isModifierRequired.js","../../src/utils/isNumeric.js","../../src/utils/getWindow.js","../../src/utils/removeEventListeners.js","../../src/utils/runModifiers.js","../../src/utils/setAttributes.js","../../src/utils/setStyles.js","../../src/utils/setupEventListeners.js","../../src/utils/debounce.js","../../src/utils/isIE10.js","../../src/utils/index.js"],"sourcesContent":["/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import getWindowSizes from './getWindowSizes';\nimport getClientRect from './getClientRect';\n\n/**\n * Get the position of the given element, relative to its offset parent\n * @method\n * @memberof Popper.Utils\n * @param {Element} element\n * @return {Object} position - Coordinates of the element and its `scrollTop`\n */\nexport default function getOffsetRect(element) {\n  let elementRect;\n  if (element.nodeName === 'HTML') {\n    const { width, height } = getWindowSizes();\n    elementRect = {\n      width,\n      height,\n      left: 0,\n      top: 0,\n    };\n  } else {\n    elementRect = {\n      width: element.offsetWidth,\n      height: element.offsetHeight,\n      left: element.offsetLeft,\n      top: element.offsetTop,\n    };\n  }\n\n  // position\n  return getClientRect(elementRect);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import computeAutoPlacement from './computeAutoPlacement';\nimport debounce from './debounce';\nimport findIndex from './findIndex';\nimport getBordersSize from './getBordersSize';\nimport getBoundaries from './getBoundaries';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getClientRect from './getClientRect';\nimport getOffsetParent from './getOffsetParent';\nimport getOffsetRect from './getOffsetRect';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getOuterSizes from './getOuterSizes';\nimport getParentNode from './getParentNode';\nimport getPopperOffsets from './getPopperOffsets';\nimport getReferenceOffsets from './getReferenceOffsets';\nimport getScroll from './getScroll';\nimport getScrollParent from './getScrollParent';\nimport getStyleComputedProperty from './getStyleComputedProperty';\nimport getSupportedPropertyName from './getSupportedPropertyName';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\nimport isFunction from './isFunction';\nimport isModifierEnabled from './isModifierEnabled';\nimport isModifierRequired from './isModifierRequired';\nimport isNumeric from './isNumeric';\nimport removeEventListeners from './removeEventListeners';\nimport runModifiers from './runModifiers';\nimport setAttributes from './setAttributes';\nimport setStyles from './setStyles';\nimport setupEventListeners from './setupEventListeners';\n\n/** @namespace Popper.Utils */\nexport {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  getOffsetParent,\n  getOffsetRect,\n  getOffsetRectRelativeToArbitraryNode,\n  getOuterSizes,\n  getParentNode,\n  getPopperOffsets,\n  getReferenceOffsets,\n  getScroll,\n  getScrollParent,\n  getStyleComputedProperty,\n  getSupportedPropertyName,\n  getWindowSizes,\n  isFixed,\n  isFunction,\n  isModifierEnabled,\n  isModifierRequired,\n  isNumeric,\n  removeEventListeners,\n  runModifiers,\n  setAttributes,\n  setStyles,\n  setupEventListeners,\n};\n\n// This is here just for backward compatibility with versions lower than v1.10.3\n// you should import the utilities using named exports, if you want them all use:\n// ```\n// import * as PopperUtils from 'popper-utils';\n// ```\n// The default export will be removed in the next major version.\nexport default {\n  computeAutoPlacement,\n  debounce,\n  findIndex,\n  getBordersSize,\n  getBoundaries,\n  getBoundingClientRect,\n  getClientRect,\n  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\ No newline at end of file
diff --git a/dist/umd/popper.js b/dist/umd/popper.js
new file mode 100644
index 0000000..ac81d0a
--- /dev/null
+++ b/dist/umd/popper.js
@@ -0,0 +1,2445 @@
+/**!
+ * @fileOverview Kickass library to create and place poppers near their reference elements.
+ * @version 1.12.9
+ * @license
+ * Copyright (c) 2016 Federico Zivolo and contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(global.Popper = factory());
+}(this, (function () { 'use strict';
+
+var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';
+var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
+var timeoutDuration = 0;
+for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {
+  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
+    timeoutDuration = 1;
+    break;
+  }
+}
+
+function microtaskDebounce(fn) {
+  var called = false;
+  return function () {
+    if (called) {
+      return;
+    }
+    called = true;
+    window.Promise.resolve().then(function () {
+      called = false;
+      fn();
+    });
+  };
+}
+
+function taskDebounce(fn) {
+  var scheduled = false;
+  return function () {
+    if (!scheduled) {
+      scheduled = true;
+      setTimeout(function () {
+        scheduled = false;
+        fn();
+      }, timeoutDuration);
+    }
+  };
+}
+
+var supportsMicroTasks = isBrowser && window.Promise;
+
+/**
+* Create a debounced version of a method, that's asynchronously deferred
+* but called in the minimum time possible.
+*
+* @method
+* @memberof Popper.Utils
+* @argument {Function} fn
+* @returns {Function}
+*/
+var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
+
+/**
+ * Check if the given variable is a function
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Any} functionToCheck - variable to check
+ * @returns {Boolean} answer to: is a function?
+ */
+function isFunction(functionToCheck) {
+  var getType = {};
+  return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
+}
+
+/**
+ * Get CSS computed property of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Eement} element
+ * @argument {String} property
+ */
+function getStyleComputedProperty(element, property) {
+  if (element.nodeType !== 1) {
+    return [];
+  }
+  // NOTE: 1 DOM access here
+  var css = getComputedStyle(element, null);
+  return property ? css[property] : css;
+}
+
+/**
+ * Returns the parentNode or the host of the element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} parent
+ */
+function getParentNode(element) {
+  if (element.nodeName === 'HTML') {
+    return element;
+  }
+  return element.parentNode || element.host;
+}
+
+/**
+ * Returns the scrolling parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} scroll parent
+ */
+function getScrollParent(element) {
+  // Return body, `getScroll` will take care to get the correct `scrollTop` from it
+  if (!element) {
+    return document.body;
+  }
+
+  switch (element.nodeName) {
+    case 'HTML':
+    case 'BODY':
+      return element.ownerDocument.body;
+    case '#document':
+      return element.body;
+  }
+
+  // Firefox want us to check `-x` and `-y` variations as well
+
+  var _getStyleComputedProp = getStyleComputedProperty(element),
+      overflow = _getStyleComputedProp.overflow,
+      overflowX = _getStyleComputedProp.overflowX,
+      overflowY = _getStyleComputedProp.overflowY;
+
+  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {
+    return element;
+  }
+
+  return getScrollParent(getParentNode(element));
+}
+
+/**
+ * Returns the offset parent of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Element} offset parent
+ */
+function getOffsetParent(element) {
+  // NOTE: 1 DOM access here
+  var offsetParent = element && element.offsetParent;
+  var nodeName = offsetParent && offsetParent.nodeName;
+
+  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
+    if (element) {
+      return element.ownerDocument.documentElement;
+    }
+
+    return document.documentElement;
+  }
+
+  // .offsetParent will return the closest TD or TABLE in case
+  // no offsetParent is present, I hate this job...
+  if (['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
+    return getOffsetParent(offsetParent);
+  }
+
+  return offsetParent;
+}
+
+function isOffsetContainer(element) {
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY') {
+    return false;
+  }
+  return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
+}
+
+/**
+ * Finds the root node (document, shadowDOM root) of the given element
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} node
+ * @returns {Element} root node
+ */
+function getRoot(node) {
+  if (node.parentNode !== null) {
+    return getRoot(node.parentNode);
+  }
+
+  return node;
+}
+
+/**
+ * Finds the offset parent common to the two provided nodes
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element1
+ * @argument {Element} element2
+ * @returns {Element} common offset parent
+ */
+function findCommonOffsetParent(element1, element2) {
+  // This check is needed to avoid errors in case one of the elements isn't defined for any reason
+  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
+    return document.documentElement;
+  }
+
+  // Here we make sure to give as "start" the element that comes first in the DOM
+  var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
+  var start = order ? element1 : element2;
+  var end = order ? element2 : element1;
+
+  // Get common ancestor container
+  var range = document.createRange();
+  range.setStart(start, 0);
+  range.setEnd(end, 0);
+  var commonAncestorContainer = range.commonAncestorContainer;
+
+  // Both nodes are inside #document
+
+  if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
+    if (isOffsetContainer(commonAncestorContainer)) {
+      return commonAncestorContainer;
+    }
+
+    return getOffsetParent(commonAncestorContainer);
+  }
+
+  // one of the nodes is inside shadowDOM, find which one
+  var element1root = getRoot(element1);
+  if (element1root.host) {
+    return findCommonOffsetParent(element1root.host, element2);
+  } else {
+    return findCommonOffsetParent(element1, getRoot(element2).host);
+  }
+}
+
+/**
+ * Gets the scroll value of the given element in the given side (top and left)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {String} side `top` or `left`
+ * @returns {number} amount of scrolled pixels
+ */
+function getScroll(element) {
+  var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';
+
+  var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
+  var nodeName = element.nodeName;
+
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    var html = element.ownerDocument.documentElement;
+    var scrollingElement = element.ownerDocument.scrollingElement || html;
+    return scrollingElement[upperSide];
+  }
+
+  return element[upperSide];
+}
+
+/*
+ * Sum or subtract the element scroll values (left and top) from a given rect object
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} rect - Rect object you want to change
+ * @param {HTMLElement} element - The element from the function reads the scroll values
+ * @param {Boolean} subtract - set to true if you want to subtract the scroll values
+ * @return {Object} rect - The modifier rect object
+ */
+function includeScroll(rect, element) {
+  var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
+
+  var scrollTop = getScroll(element, 'top');
+  var scrollLeft = getScroll(element, 'left');
+  var modifier = subtract ? -1 : 1;
+  rect.top += scrollTop * modifier;
+  rect.bottom += scrollTop * modifier;
+  rect.left += scrollLeft * modifier;
+  rect.right += scrollLeft * modifier;
+  return rect;
+}
+
+/*
+ * Helper to detect borders of a given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {CSSStyleDeclaration} styles
+ * Result of `getStyleComputedProperty` on the given element
+ * @param {String} axis - `x` or `y`
+ * @return {number} borders - The borders size of the given axis
+ */
+
+function getBordersSize(styles, axis) {
+  var sideA = axis === 'x' ? 'Left' : 'Top';
+  var sideB = sideA === 'Left' ? 'Right' : 'Bottom';
+
+  return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);
+}
+
+/**
+ * Tells if you are running Internet Explorer 10
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean} isIE10
+ */
+var isIE10 = undefined;
+
+var isIE10$1 = function () {
+  if (isIE10 === undefined) {
+    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;
+  }
+  return isIE10;
+};
+
+function getSize(axis, body, html, computedStyle) {
+  return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE10$1() ? html['offset' + axis] + computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')] + computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')] : 0);
+}
+
+function getWindowSizes() {
+  var body = document.body;
+  var html = document.documentElement;
+  var computedStyle = isIE10$1() && getComputedStyle(html);
+
+  return {
+    height: getSize('Height', body, html, computedStyle),
+    width: getSize('Width', body, html, computedStyle)
+  };
+}
+
+var classCallCheck = function (instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+};
+
+var createClass = function () {
+  function defineProperties(target, props) {
+    for (var i = 0; i < props.length; i++) {
+      var descriptor = props[i];
+      descriptor.enumerable = descriptor.enumerable || false;
+      descriptor.configurable = true;
+      if ("value" in descriptor) descriptor.writable = true;
+      Object.defineProperty(target, descriptor.key, descriptor);
+    }
+  }
+
+  return function (Constructor, protoProps, staticProps) {
+    if (protoProps) defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) defineProperties(Constructor, staticProps);
+    return Constructor;
+  };
+}();
+
+
+
+
+
+var defineProperty = function (obj, key, value) {
+  if (key in obj) {
+    Object.defineProperty(obj, key, {
+      value: value,
+      enumerable: true,
+      configurable: true,
+      writable: true
+    });
+  } else {
+    obj[key] = value;
+  }
+
+  return obj;
+};
+
+var _extends = Object.assign || function (target) {
+  for (var i = 1; i < arguments.length; i++) {
+    var source = arguments[i];
+
+    for (var key in source) {
+      if (Object.prototype.hasOwnProperty.call(source, key)) {
+        target[key] = source[key];
+      }
+    }
+  }
+
+  return target;
+};
+
+/**
+ * Given element offsets, generate an output similar to getBoundingClientRect
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} offsets
+ * @returns {Object} ClientRect like output
+ */
+function getClientRect(offsets) {
+  return _extends({}, offsets, {
+    right: offsets.left + offsets.width,
+    bottom: offsets.top + offsets.height
+  });
+}
+
+/**
+ * Get bounding client rect of given element
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} element
+ * @return {Object} client rect
+ */
+function getBoundingClientRect(element) {
+  var rect = {};
+
+  // IE10 10 FIX: Please, don't ask, the element isn't
+  // considered in DOM in some circumstances...
+  // This isn't reproducible in IE10 compatibility mode of IE11
+  if (isIE10$1()) {
+    try {
+      rect = element.getBoundingClientRect();
+      var scrollTop = getScroll(element, 'top');
+      var scrollLeft = getScroll(element, 'left');
+      rect.top += scrollTop;
+      rect.left += scrollLeft;
+      rect.bottom += scrollTop;
+      rect.right += scrollLeft;
+    } catch (err) {}
+  } else {
+    rect = element.getBoundingClientRect();
+  }
+
+  var result = {
+    left: rect.left,
+    top: rect.top,
+    width: rect.right - rect.left,
+    height: rect.bottom - rect.top
+  };
+
+  // subtract scrollbar size from sizes
+  var sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};
+  var width = sizes.width || element.clientWidth || result.right - result.left;
+  var height = sizes.height || element.clientHeight || result.bottom - result.top;
+
+  var horizScrollbar = element.offsetWidth - width;
+  var vertScrollbar = element.offsetHeight - height;
+
+  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`
+  // we make this check conditional for performance reasons
+  if (horizScrollbar || vertScrollbar) {
+    var styles = getStyleComputedProperty(element);
+    horizScrollbar -= getBordersSize(styles, 'x');
+    vertScrollbar -= getBordersSize(styles, 'y');
+
+    result.width -= horizScrollbar;
+    result.height -= vertScrollbar;
+  }
+
+  return getClientRect(result);
+}
+
+function getOffsetRectRelativeToArbitraryNode(children, parent) {
+  var isIE10 = isIE10$1();
+  var isHTML = parent.nodeName === 'HTML';
+  var childrenRect = getBoundingClientRect(children);
+  var parentRect = getBoundingClientRect(parent);
+  var scrollParent = getScrollParent(children);
+
+  var styles = getStyleComputedProperty(parent);
+  var borderTopWidth = parseFloat(styles.borderTopWidth, 10);
+  var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);
+
+  var offsets = getClientRect({
+    top: childrenRect.top - parentRect.top - borderTopWidth,
+    left: childrenRect.left - parentRect.left - borderLeftWidth,
+    width: childrenRect.width,
+    height: childrenRect.height
+  });
+  offsets.marginTop = 0;
+  offsets.marginLeft = 0;
+
+  // Subtract margins of documentElement in case it's being used as parent
+  // we do this only on HTML because it's the only element that behaves
+  // differently when margins are applied to it. The margins are included in
+  // the box of the documentElement, in the other cases not.
+  if (!isIE10 && isHTML) {
+    var marginTop = parseFloat(styles.marginTop, 10);
+    var marginLeft = parseFloat(styles.marginLeft, 10);
+
+    offsets.top -= borderTopWidth - marginTop;
+    offsets.bottom -= borderTopWidth - marginTop;
+    offsets.left -= borderLeftWidth - marginLeft;
+    offsets.right -= borderLeftWidth - marginLeft;
+
+    // Attach marginTop and marginLeft because in some circumstances we may need them
+    offsets.marginTop = marginTop;
+    offsets.marginLeft = marginLeft;
+  }
+
+  if (isIE10 ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
+    offsets = includeScroll(offsets, parent);
+  }
+
+  return offsets;
+}
+
+function getViewportOffsetRectRelativeToArtbitraryNode(element) {
+  var html = element.ownerDocument.documentElement;
+  var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
+  var width = Math.max(html.clientWidth, window.innerWidth || 0);
+  var height = Math.max(html.clientHeight, window.innerHeight || 0);
+
+  var scrollTop = getScroll(html);
+  var scrollLeft = getScroll(html, 'left');
+
+  var offset = {
+    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
+    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
+    width: width,
+    height: height
+  };
+
+  return getClientRect(offset);
+}
+
+/**
+ * Check if the given element is fixed or is inside a fixed parent
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @argument {Element} customContainer
+ * @returns {Boolean} answer to "isFixed?"
+ */
+function isFixed(element) {
+  var nodeName = element.nodeName;
+  if (nodeName === 'BODY' || nodeName === 'HTML') {
+    return false;
+  }
+  if (getStyleComputedProperty(element, 'position') === 'fixed') {
+    return true;
+  }
+  return isFixed(getParentNode(element));
+}
+
+/**
+ * Computed the boundaries limits and return them
+ * @method
+ * @memberof Popper.Utils
+ * @param {HTMLElement} popper
+ * @param {HTMLElement} reference
+ * @param {number} padding
+ * @param {HTMLElement} boundariesElement - Element used to define the boundaries
+ * @returns {Object} Coordinates of the boundaries
+ */
+function getBoundaries(popper, reference, padding, boundariesElement) {
+  // NOTE: 1 DOM access here
+  var boundaries = { top: 0, left: 0 };
+  var offsetParent = findCommonOffsetParent(popper, reference);
+
+  // Handle viewport case
+  if (boundariesElement === 'viewport') {
+    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);
+  } else {
+    // Handle other cases based on DOM element used as boundaries
+    var boundariesNode = void 0;
+    if (boundariesElement === 'scrollParent') {
+      boundariesNode = getScrollParent(getParentNode(reference));
+      if (boundariesNode.nodeName === 'BODY') {
+        boundariesNode = popper.ownerDocument.documentElement;
+      }
+    } else if (boundariesElement === 'window') {
+      boundariesNode = popper.ownerDocument.documentElement;
+    } else {
+      boundariesNode = boundariesElement;
+    }
+
+    var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent);
+
+    // In case of HTML, we need a different computation
+    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
+      var _getWindowSizes = getWindowSizes(),
+          height = _getWindowSizes.height,
+          width = _getWindowSizes.width;
+
+      boundaries.top += offsets.top - offsets.marginTop;
+      boundaries.bottom = height + offsets.top;
+      boundaries.left += offsets.left - offsets.marginLeft;
+      boundaries.right = width + offsets.left;
+    } else {
+      // for all the other DOM elements, this one is good
+      boundaries = offsets;
+    }
+  }
+
+  // Add paddings
+  boundaries.left += padding;
+  boundaries.top += padding;
+  boundaries.right -= padding;
+  boundaries.bottom -= padding;
+
+  return boundaries;
+}
+
+function getArea(_ref) {
+  var width = _ref.width,
+      height = _ref.height;
+
+  return width * height;
+}
+
+/**
+ * Utility used to transform the `auto` placement to the placement with more
+ * available space.
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {
+  var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
+
+  if (placement.indexOf('auto') === -1) {
+    return placement;
+  }
+
+  var boundaries = getBoundaries(popper, reference, padding, boundariesElement);
+
+  var rects = {
+    top: {
+      width: boundaries.width,
+      height: refRect.top - boundaries.top
+    },
+    right: {
+      width: boundaries.right - refRect.right,
+      height: boundaries.height
+    },
+    bottom: {
+      width: boundaries.width,
+      height: boundaries.bottom - refRect.bottom
+    },
+    left: {
+      width: refRect.left - boundaries.left,
+      height: boundaries.height
+    }
+  };
+
+  var sortedAreas = Object.keys(rects).map(function (key) {
+    return _extends({
+      key: key
+    }, rects[key], {
+      area: getArea(rects[key])
+    });
+  }).sort(function (a, b) {
+    return b.area - a.area;
+  });
+
+  var filteredAreas = sortedAreas.filter(function (_ref2) {
+    var width = _ref2.width,
+        height = _ref2.height;
+    return width >= popper.clientWidth && height >= popper.clientHeight;
+  });
+
+  var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
+
+  var variation = placement.split('-')[1];
+
+  return computedPlacement + (variation ? '-' + variation : '');
+}
+
+/**
+ * Get offsets to the reference element
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} state
+ * @param {Element} popper - the popper element
+ * @param {Element} reference - the reference element (the popper will be relative to this)
+ * @returns {Object} An object containing the offsets which will be applied to the popper
+ */
+function getReferenceOffsets(state, popper, reference) {
+  var commonOffsetParent = findCommonOffsetParent(popper, reference);
+  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);
+}
+
+/**
+ * Get the outer sizes of the given element (offset size + margins)
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element
+ * @returns {Object} object containing width and height properties
+ */
+function getOuterSizes(element) {
+  var styles = getComputedStyle(element);
+  var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
+  var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+  var result = {
+    width: element.offsetWidth + y,
+    height: element.offsetHeight + x
+  };
+  return result;
+}
+
+/**
+ * Get the opposite placement of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement
+ * @returns {String} flipped placement
+ */
+function getOppositePlacement(placement) {
+  var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash[matched];
+  });
+}
+
+/**
+ * Get offsets to the popper
+ * @method
+ * @memberof Popper.Utils
+ * @param {Object} position - CSS position the Popper will get applied
+ * @param {HTMLElement} popper - the popper element
+ * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
+ * @param {String} placement - one of the valid placement options
+ * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
+ */
+function getPopperOffsets(popper, referenceOffsets, placement) {
+  placement = placement.split('-')[0];
+
+  // Get popper node sizes
+  var popperRect = getOuterSizes(popper);
+
+  // Add position, width and height to our offsets object
+  var popperOffsets = {
+    width: popperRect.width,
+    height: popperRect.height
+  };
+
+  // depending by the popper placement we have to compute its offsets slightly differently
+  var isHoriz = ['right', 'left'].indexOf(placement) !== -1;
+  var mainSide = isHoriz ? 'top' : 'left';
+  var secondarySide = isHoriz ? 'left' : 'top';
+  var measurement = isHoriz ? 'height' : 'width';
+  var secondaryMeasurement = !isHoriz ? 'height' : 'width';
+
+  popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
+  if (placement === secondarySide) {
+    popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
+  } else {
+    popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
+  }
+
+  return popperOffsets;
+}
+
+/**
+ * Mimics the `find` method of Array
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function find(arr, check) {
+  // use native find if supported
+  if (Array.prototype.find) {
+    return arr.find(check);
+  }
+
+  // use `filter` to obtain the same behavior of `find`
+  return arr.filter(check)[0];
+}
+
+/**
+ * Return the index of the matching object
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Array} arr
+ * @argument prop
+ * @argument value
+ * @returns index or -1
+ */
+function findIndex(arr, prop, value) {
+  // use native findIndex if supported
+  if (Array.prototype.findIndex) {
+    return arr.findIndex(function (cur) {
+      return cur[prop] === value;
+    });
+  }
+
+  // use `find` + `indexOf` if `findIndex` isn't supported
+  var match = find(arr, function (obj) {
+    return obj[prop] === value;
+  });
+  return arr.indexOf(match);
+}
+
+/**
+ * Loop trough the list of modifiers and run them in order,
+ * each of them will then edit the data object.
+ * @method
+ * @memberof Popper.Utils
+ * @param {dataObject} data
+ * @param {Array} modifiers
+ * @param {String} ends - Optional modifier name used as stopper
+ * @returns {dataObject}
+ */
+function runModifiers(modifiers, data, ends) {
+  var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
+
+  modifiersToRun.forEach(function (modifier) {
+    if (modifier['function']) {
+      // eslint-disable-line dot-notation
+      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
+    }
+    var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
+    if (modifier.enabled && isFunction(fn)) {
+      // Add properties to offsets to make them a complete clientRect object
+      // we do this before each modifier to make sure the previous one doesn't
+      // mess with these values
+      data.offsets.popper = getClientRect(data.offsets.popper);
+      data.offsets.reference = getClientRect(data.offsets.reference);
+
+      data = fn(data, modifier);
+    }
+  });
+
+  return data;
+}
+
+/**
+ * Updates the position of the popper, computing the new offsets and applying
+ * the new style.<br />
+ * Prefer `scheduleUpdate` over `update` because of performance reasons.
+ * @method
+ * @memberof Popper
+ */
+function update() {
+  // if popper is destroyed, don't perform any further update
+  if (this.state.isDestroyed) {
+    return;
+  }
+
+  var data = {
+    instance: this,
+    styles: {},
+    arrowStyles: {},
+    attributes: {},
+    flipped: false,
+    offsets: {}
+  };
+
+  // compute reference element offsets
+  data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference);
+
+  // compute auto placement, store placement inside the data object,
+  // modifiers will be able to edit `placement` if needed
+  // and refer to originalPlacement to know the original value
+  data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);
+
+  // store the computed placement inside `originalPlacement`
+  data.originalPlacement = data.placement;
+
+  // compute the popper offsets
+  data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);
+  data.offsets.popper.position = 'absolute';
+
+  // run the modifiers
+  data = runModifiers(this.modifiers, data);
+
+  // the first `update` will call `onCreate` callback
+  // the other ones will call `onUpdate` callback
+  if (!this.state.isCreated) {
+    this.state.isCreated = true;
+    this.options.onCreate(data);
+  } else {
+    this.options.onUpdate(data);
+  }
+}
+
+/**
+ * Helper used to know if the given modifier is enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @returns {Boolean}
+ */
+function isModifierEnabled(modifiers, modifierName) {
+  return modifiers.some(function (_ref) {
+    var name = _ref.name,
+        enabled = _ref.enabled;
+    return enabled && name === modifierName;
+  });
+}
+
+/**
+ * Get the prefixed supported property name
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} property (camelCase)
+ * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
+ */
+function getSupportedPropertyName(property) {
+  var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
+  var upperProp = property.charAt(0).toUpperCase() + property.slice(1);
+
+  for (var i = 0; i < prefixes.length - 1; i++) {
+    var prefix = prefixes[i];
+    var toCheck = prefix ? '' + prefix + upperProp : property;
+    if (typeof document.body.style[toCheck] !== 'undefined') {
+      return toCheck;
+    }
+  }
+  return null;
+}
+
+/**
+ * Destroy the popper
+ * @method
+ * @memberof Popper
+ */
+function destroy() {
+  this.state.isDestroyed = true;
+
+  // touch DOM only if `applyStyle` modifier is enabled
+  if (isModifierEnabled(this.modifiers, 'applyStyle')) {
+    this.popper.removeAttribute('x-placement');
+    this.popper.style.left = '';
+    this.popper.style.position = '';
+    this.popper.style.top = '';
+    this.popper.style[getSupportedPropertyName('transform')] = '';
+  }
+
+  this.disableEventListeners();
+
+  // remove the popper if user explicity asked for the deletion on destroy
+  // do not use `remove` because IE11 doesn't support it
+  if (this.options.removeOnDestroy) {
+    this.popper.parentNode.removeChild(this.popper);
+  }
+  return this;
+}
+
+/**
+ * Get the window associated with the element
+ * @argument {Element} element
+ * @returns {Window}
+ */
+function getWindow(element) {
+  var ownerDocument = element.ownerDocument;
+  return ownerDocument ? ownerDocument.defaultView : window;
+}
+
+function attachToScrollParents(scrollParent, event, callback, scrollParents) {
+  var isBody = scrollParent.nodeName === 'BODY';
+  var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
+  target.addEventListener(event, callback, { passive: true });
+
+  if (!isBody) {
+    attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
+  }
+  scrollParents.push(target);
+}
+
+/**
+ * Setup needed event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function setupEventListeners(reference, options, state, updateBound) {
+  // Resize event listener on window
+  state.updateBound = updateBound;
+  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
+
+  // Scroll event listener on scroll parents
+  var scrollElement = getScrollParent(reference);
+  attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
+  state.scrollElement = scrollElement;
+  state.eventsEnabled = true;
+
+  return state;
+}
+
+/**
+ * It will add resize/scroll events and start recalculating
+ * position of the popper element when they are triggered.
+ * @method
+ * @memberof Popper
+ */
+function enableEventListeners() {
+  if (!this.state.eventsEnabled) {
+    this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
+  }
+}
+
+/**
+ * Remove event listeners used to update the popper position
+ * @method
+ * @memberof Popper.Utils
+ * @private
+ */
+function removeEventListeners(reference, state) {
+  // Remove resize event listener on window
+  getWindow(reference).removeEventListener('resize', state.updateBound);
+
+  // Remove scroll event listener on scroll parents
+  state.scrollParents.forEach(function (target) {
+    target.removeEventListener('scroll', state.updateBound);
+  });
+
+  // Reset state
+  state.updateBound = null;
+  state.scrollParents = [];
+  state.scrollElement = null;
+  state.eventsEnabled = false;
+  return state;
+}
+
+/**
+ * It will remove resize/scroll events and won't recalculate popper position
+ * when they are triggered. It also won't trigger onUpdate callback anymore,
+ * unless you call `update` method manually.
+ * @method
+ * @memberof Popper
+ */
+function disableEventListeners() {
+  if (this.state.eventsEnabled) {
+    cancelAnimationFrame(this.scheduleUpdate);
+    this.state = removeEventListeners(this.reference, this.state);
+  }
+}
+
+/**
+ * Tells if a given input is a number
+ * @method
+ * @memberof Popper.Utils
+ * @param {*} input to check
+ * @return {Boolean}
+ */
+function isNumeric(n) {
+  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
+}
+
+/**
+ * Set the style to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the style to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setStyles(element, styles) {
+  Object.keys(styles).forEach(function (prop) {
+    var unit = '';
+    // add unit if the value is numeric and is one of the following
+    if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
+      unit = 'px';
+    }
+    element.style[prop] = styles[prop] + unit;
+  });
+}
+
+/**
+ * Set the attributes to the given popper
+ * @method
+ * @memberof Popper.Utils
+ * @argument {Element} element - Element to apply the attributes to
+ * @argument {Object} styles
+ * Object with a list of properties and values which will be applied to the element
+ */
+function setAttributes(element, attributes) {
+  Object.keys(attributes).forEach(function (prop) {
+    var value = attributes[prop];
+    if (value !== false) {
+      element.setAttribute(prop, attributes[prop]);
+    } else {
+      element.removeAttribute(prop);
+    }
+  });
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} data.styles - List of style properties - values to apply to popper element
+ * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The same data object
+ */
+function applyStyle(data) {
+  // any property present in `data.styles` will be applied to the popper,
+  // in this way we can make the 3rd party modifiers add custom styles to it
+  // Be aware, modifiers could override the properties defined in the previous
+  // lines of this modifier!
+  setStyles(data.instance.popper, data.styles);
+
+  // any property present in `data.attributes` will be applied to the popper,
+  // they will be set as HTML attributes of the element
+  setAttributes(data.instance.popper, data.attributes);
+
+  // if arrowElement is defined and arrowStyles has some properties
+  if (data.arrowElement && Object.keys(data.arrowStyles).length) {
+    setStyles(data.arrowElement, data.arrowStyles);
+  }
+
+  return data;
+}
+
+/**
+ * Set the x-placement attribute before everything else because it could be used
+ * to add margins to the popper margins needs to be calculated to get the
+ * correct popper offsets.
+ * @method
+ * @memberof Popper.modifiers
+ * @param {HTMLElement} reference - The reference element used to position the popper
+ * @param {HTMLElement} popper - The HTML element used as popper.
+ * @param {Object} options - Popper.js options
+ */
+function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
+  // compute reference element offsets
+  var referenceOffsets = getReferenceOffsets(state, popper, reference);
+
+  // compute auto placement, store placement inside the data object,
+  // modifiers will be able to edit `placement` if needed
+  // and refer to originalPlacement to know the original value
+  var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);
+
+  popper.setAttribute('x-placement', placement);
+
+  // Apply `position` to popper before anything else because
+  // without the position applied we can't guarantee correct computations
+  setStyles(popper, { position: 'absolute' });
+
+  return options;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function computeStyle(data, options) {
+  var x = options.x,
+      y = options.y;
+  var popper = data.offsets.popper;
+
+  // Remove this legacy support in Popper.js v2
+
+  var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {
+    return modifier.name === 'applyStyle';
+  }).gpuAcceleration;
+  if (legacyGpuAccelerationOption !== undefined) {
+    console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
+  }
+  var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;
+
+  var offsetParent = getOffsetParent(data.instance.popper);
+  var offsetParentRect = getBoundingClientRect(offsetParent);
+
+  // Styles
+  var styles = {
+    position: popper.position
+  };
+
+  // floor sides to avoid blurry text
+  var offsets = {
+    left: Math.floor(popper.left),
+    top: Math.floor(popper.top),
+    bottom: Math.floor(popper.bottom),
+    right: Math.floor(popper.right)
+  };
+
+  var sideA = x === 'bottom' ? 'top' : 'bottom';
+  var sideB = y === 'right' ? 'left' : 'right';
+
+  // if gpuAcceleration is set to `true` and transform is supported,
+  //  we use `translate3d` to apply the position to the popper we
+  // automatically use the supported prefixed version if needed
+  var prefixedProperty = getSupportedPropertyName('transform');
+
+  // now, let's make a step back and look at this code closely (wtf?)
+  // If the content of the popper grows once it's been positioned, it
+  // may happen that the popper gets misplaced because of the new content
+  // overflowing its reference element
+  // To avoid this problem, we provide two options (x and y), which allow
+  // the consumer to define the offset origin.
+  // If we position a popper on top of a reference element, we can set
+  // `x` to `top` to make the popper grow towards its top instead of
+  // its bottom.
+  var left = void 0,
+      top = void 0;
+  if (sideA === 'bottom') {
+    top = -offsetParentRect.height + offsets.bottom;
+  } else {
+    top = offsets.top;
+  }
+  if (sideB === 'right') {
+    left = -offsetParentRect.width + offsets.right;
+  } else {
+    left = offsets.left;
+  }
+  if (gpuAcceleration && prefixedProperty) {
+    styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';
+    styles[sideA] = 0;
+    styles[sideB] = 0;
+    styles.willChange = 'transform';
+  } else {
+    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
+    var invertTop = sideA === 'bottom' ? -1 : 1;
+    var invertLeft = sideB === 'right' ? -1 : 1;
+    styles[sideA] = top * invertTop;
+    styles[sideB] = left * invertLeft;
+    styles.willChange = sideA + ', ' + sideB;
+  }
+
+  // Attributes
+  var attributes = {
+    'x-placement': data.placement
+  };
+
+  // Update `data` attributes, styles and arrowStyles
+  data.attributes = _extends({}, attributes, data.attributes);
+  data.styles = _extends({}, styles, data.styles);
+  data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);
+
+  return data;
+}
+
+/**
+ * Helper used to know if the given modifier depends from another one.<br />
+ * It checks if the needed modifier is listed and enabled.
+ * @method
+ * @memberof Popper.Utils
+ * @param {Array} modifiers - list of modifiers
+ * @param {String} requestingName - name of requesting modifier
+ * @param {String} requestedName - name of requested modifier
+ * @returns {Boolean}
+ */
+function isModifierRequired(modifiers, requestingName, requestedName) {
+  var requesting = find(modifiers, function (_ref) {
+    var name = _ref.name;
+    return name === requestingName;
+  });
+
+  var isRequired = !!requesting && modifiers.some(function (modifier) {
+    return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
+  });
+
+  if (!isRequired) {
+    var _requesting = '`' + requestingName + '`';
+    var requested = '`' + requestedName + '`';
+    console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');
+  }
+  return isRequired;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function arrow(data, options) {
+  var _data$offsets$arrow;
+
+  // arrow depends on keepTogether in order to work
+  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
+    return data;
+  }
+
+  var arrowElement = options.element;
+
+  // if arrowElement is a string, suppose it's a CSS selector
+  if (typeof arrowElement === 'string') {
+    arrowElement = data.instance.popper.querySelector(arrowElement);
+
+    // if arrowElement is not found, don't run the modifier
+    if (!arrowElement) {
+      return data;
+    }
+  } else {
+    // if the arrowElement isn't a query selector we must check that the
+    // provided DOM node is child of its popper node
+    if (!data.instance.popper.contains(arrowElement)) {
+      console.warn('WARNING: `arrow.element` must be child of its popper element!');
+      return data;
+    }
+  }
+
+  var placement = data.placement.split('-')[0];
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var isVertical = ['left', 'right'].indexOf(placement) !== -1;
+
+  var len = isVertical ? 'height' : 'width';
+  var sideCapitalized = isVertical ? 'Top' : 'Left';
+  var side = sideCapitalized.toLowerCase();
+  var altSide = isVertical ? 'left' : 'top';
+  var opSide = isVertical ? 'bottom' : 'right';
+  var arrowElementSize = getOuterSizes(arrowElement)[len];
+
+  //
+  // extends keepTogether behavior making sure the popper and its
+  // reference have enough pixels in conjuction
+  //
+
+  // top/left side
+  if (reference[opSide] - arrowElementSize < popper[side]) {
+    data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
+  }
+  // bottom/right side
+  if (reference[side] + arrowElementSize > popper[opSide]) {
+    data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
+  }
+  data.offsets.popper = getClientRect(data.offsets.popper);
+
+  // compute center of the popper
+  var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;
+
+  // Compute the sideValue using the updated popper offsets
+  // take popper margin in account because we don't have this info available
+  var css = getStyleComputedProperty(data.instance.popper);
+  var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);
+  var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);
+  var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;
+
+  // prevent arrowElement from being placed not contiguously to its popper
+  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);
+
+  data.arrowElement = arrowElement;
+  data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);
+
+  return data;
+}
+
+/**
+ * Get the opposite placement variation of the given one
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement variation
+ * @returns {String} flipped placement variation
+ */
+function getOppositeVariation(variation) {
+  if (variation === 'end') {
+    return 'start';
+  } else if (variation === 'start') {
+    return 'end';
+  }
+  return variation;
+}
+
+/**
+ * List of accepted placements to use as values of the `placement` option.<br />
+ * Valid placements are:
+ * - `auto`
+ * - `top`
+ * - `right`
+ * - `bottom`
+ * - `left`
+ *
+ * Each placement can have a variation from this list:
+ * - `-start`
+ * - `-end`
+ *
+ * Variations are interpreted easily if you think of them as the left to right
+ * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
+ * is right.<br />
+ * Vertically (`left` and `right`), `start` is top and `end` is bottom.
+ *
+ * Some valid examples are:
+ * - `top-end` (on top of reference, right aligned)
+ * - `right-start` (on right of reference, top aligned)
+ * - `bottom` (on bottom, centered)
+ * - `auto-right` (on the side with more space available, alignment depends by placement)
+ *
+ * @static
+ * @type {Array}
+ * @enum {String}
+ * @readonly
+ * @method placements
+ * @memberof Popper
+ */
+var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];
+
+// Get rid of `auto` `auto-start` and `auto-end`
+var validPlacements = placements.slice(3);
+
+/**
+ * Given an initial placement, returns all the subsequent placements
+ * clockwise (or counter-clockwise).
+ *
+ * @method
+ * @memberof Popper.Utils
+ * @argument {String} placement - A valid placement (it accepts variations)
+ * @argument {Boolean} counter - Set to true to walk the placements counterclockwise
+ * @returns {Array} placements including their variations
+ */
+function clockwise(placement) {
+  var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
+
+  var index = validPlacements.indexOf(placement);
+  var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
+  return counter ? arr.reverse() : arr;
+}
+
+var BEHAVIORS = {
+  FLIP: 'flip',
+  CLOCKWISE: 'clockwise',
+  COUNTERCLOCKWISE: 'counterclockwise'
+};
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function flip(data, options) {
+  // if `inner` modifier is enabled, we can't use the `flip` modifier
+  if (isModifierEnabled(data.instance.modifiers, 'inner')) {
+    return data;
+  }
+
+  if (data.flipped && data.placement === data.originalPlacement) {
+    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
+    return data;
+  }
+
+  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement);
+
+  var placement = data.placement.split('-')[0];
+  var placementOpposite = getOppositePlacement(placement);
+  var variation = data.placement.split('-')[1] || '';
+
+  var flipOrder = [];
+
+  switch (options.behavior) {
+    case BEHAVIORS.FLIP:
+      flipOrder = [placement, placementOpposite];
+      break;
+    case BEHAVIORS.CLOCKWISE:
+      flipOrder = clockwise(placement);
+      break;
+    case BEHAVIORS.COUNTERCLOCKWISE:
+      flipOrder = clockwise(placement, true);
+      break;
+    default:
+      flipOrder = options.behavior;
+  }
+
+  flipOrder.forEach(function (step, index) {
+    if (placement !== step || flipOrder.length === index + 1) {
+      return data;
+    }
+
+    placement = data.placement.split('-')[0];
+    placementOpposite = getOppositePlacement(placement);
+
+    var popperOffsets = data.offsets.popper;
+    var refOffsets = data.offsets.reference;
+
+    // using floor because the reference offsets may contain decimals we are not going to consider here
+    var floor = Math.floor;
+    var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);
+
+    var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
+    var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
+    var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
+    var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);
+
+    var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;
+
+    // flip the variation if required
+    var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
+    var flippedVariation = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
+
+    if (overlapsRef || overflowsBoundaries || flippedVariation) {
+      // this boolean to detect any flip loop
+      data.flipped = true;
+
+      if (overlapsRef || overflowsBoundaries) {
+        placement = flipOrder[index + 1];
+      }
+
+      if (flippedVariation) {
+        variation = getOppositeVariation(variation);
+      }
+
+      data.placement = placement + (variation ? '-' + variation : '');
+
+      // this object contains `position`, we want to preserve it along with
+      // any additional property we may add in the future
+      data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));
+
+      data = runModifiers(data.instance.modifiers, data, 'flip');
+    }
+  });
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function keepTogether(data) {
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var placement = data.placement.split('-')[0];
+  var floor = Math.floor;
+  var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
+  var side = isVertical ? 'right' : 'bottom';
+  var opSide = isVertical ? 'left' : 'top';
+  var measurement = isVertical ? 'width' : 'height';
+
+  if (popper[side] < floor(reference[opSide])) {
+    data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
+  }
+  if (popper[opSide] > floor(reference[side])) {
+    data.offsets.popper[opSide] = floor(reference[side]);
+  }
+
+  return data;
+}
+
+/**
+ * Converts a string containing value + unit into a px value number
+ * @function
+ * @memberof {modifiers~offset}
+ * @private
+ * @argument {String} str - Value + unit string
+ * @argument {String} measurement - `height` or `width`
+ * @argument {Object} popperOffsets
+ * @argument {Object} referenceOffsets
+ * @returns {Number|String}
+ * Value in pixels, or original string if no values were extracted
+ */
+function toValue(str, measurement, popperOffsets, referenceOffsets) {
+  // separate value from unit
+  var split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
+  var value = +split[1];
+  var unit = split[2];
+
+  // If it's not a number it's an operator, I guess
+  if (!value) {
+    return str;
+  }
+
+  if (unit.indexOf('%') === 0) {
+    var element = void 0;
+    switch (unit) {
+      case '%p':
+        element = popperOffsets;
+        break;
+      case '%':
+      case '%r':
+      default:
+        element = referenceOffsets;
+    }
+
+    var rect = getClientRect(element);
+    return rect[measurement] / 100 * value;
+  } else if (unit === 'vh' || unit === 'vw') {
+    // if is a vh or vw, we calculate the size based on the viewport
+    var size = void 0;
+    if (unit === 'vh') {
+      size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
+    } else {
+      size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
+    }
+    return size / 100 * value;
+  } else {
+    // if is an explicit pixel unit, we get rid of the unit and keep the value
+    // if is an implicit unit, it's px, and we return just the value
+    return value;
+  }
+}
+
+/**
+ * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
+ * @function
+ * @memberof {modifiers~offset}
+ * @private
+ * @argument {String} offset
+ * @argument {Object} popperOffsets
+ * @argument {Object} referenceOffsets
+ * @argument {String} basePlacement
+ * @returns {Array} a two cells array with x and y offsets in numbers
+ */
+function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {
+  var offsets = [0, 0];
+
+  // Use height if placement is left or right and index is 0 otherwise use width
+  // in this way the first offset will use an axis and the second one
+  // will use the other one
+  var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;
+
+  // Split the offset string to obtain a list of values and operands
+  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)
+  var fragments = offset.split(/(\+|\-)/).map(function (frag) {
+    return frag.trim();
+  });
+
+  // Detect if the offset string contains a pair of values or a single one
+  // they could be separated by comma or space
+  var divider = fragments.indexOf(find(fragments, function (frag) {
+    return frag.search(/,|\s/) !== -1;
+  }));
+
+  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
+    console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
+  }
+
+  // If divider is found, we divide the list of values and operands to divide
+  // them by ofset X and Y.
+  var splitRegex = /\s*,\s*|\s+/;
+  var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];
+
+  // Convert the values with units to absolute pixels to allow our computations
+  ops = ops.map(function (op, index) {
+    // Most of the units rely on the orientation of the popper
+    var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
+    var mergeWithPrevious = false;
+    return op
+    // This aggregates any `+` or `-` sign that aren't considered operators
+    // e.g.: 10 + +5 => [10, +, +5]
+    .reduce(function (a, b) {
+      if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
+        a[a.length - 1] = b;
+        mergeWithPrevious = true;
+        return a;
+      } else if (mergeWithPrevious) {
+        a[a.length - 1] += b;
+        mergeWithPrevious = false;
+        return a;
+      } else {
+        return a.concat(b);
+      }
+    }, [])
+    // Here we convert the string values into number values (in px)
+    .map(function (str) {
+      return toValue(str, measurement, popperOffsets, referenceOffsets);
+    });
+  });
+
+  // Loop trough the offsets arrays and execute the operations
+  ops.forEach(function (op, index) {
+    op.forEach(function (frag, index2) {
+      if (isNumeric(frag)) {
+        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
+      }
+    });
+  });
+  return offsets;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @argument {Number|String} options.offset=0
+ * The offset value as described in the modifier description
+ * @returns {Object} The data object, properly modified
+ */
+function offset(data, _ref) {
+  var offset = _ref.offset;
+  var placement = data.placement,
+      _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var basePlacement = placement.split('-')[0];
+
+  var offsets = void 0;
+  if (isNumeric(+offset)) {
+    offsets = [+offset, 0];
+  } else {
+    offsets = parseOffset(offset, popper, reference, basePlacement);
+  }
+
+  if (basePlacement === 'left') {
+    popper.top += offsets[0];
+    popper.left -= offsets[1];
+  } else if (basePlacement === 'right') {
+    popper.top += offsets[0];
+    popper.left += offsets[1];
+  } else if (basePlacement === 'top') {
+    popper.left += offsets[0];
+    popper.top -= offsets[1];
+  } else if (basePlacement === 'bottom') {
+    popper.left += offsets[0];
+    popper.top += offsets[1];
+  }
+
+  data.popper = popper;
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function preventOverflow(data, options) {
+  var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);
+
+  // If offsetParent is the reference element, we really want to
+  // go one step up and use the next offsetParent as reference to
+  // avoid to make this modifier completely useless and look like broken
+  if (data.instance.reference === boundariesElement) {
+    boundariesElement = getOffsetParent(boundariesElement);
+  }
+
+  var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement);
+  options.boundaries = boundaries;
+
+  var order = options.priority;
+  var popper = data.offsets.popper;
+
+  var check = {
+    primary: function primary(placement) {
+      var value = popper[placement];
+      if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
+        value = Math.max(popper[placement], boundaries[placement]);
+      }
+      return defineProperty({}, placement, value);
+    },
+    secondary: function secondary(placement) {
+      var mainSide = placement === 'right' ? 'left' : 'top';
+      var value = popper[mainSide];
+      if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
+        value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
+      }
+      return defineProperty({}, mainSide, value);
+    }
+  };
+
+  order.forEach(function (placement) {
+    var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
+    popper = _extends({}, popper, check[side](placement));
+  });
+
+  data.offsets.popper = popper;
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function shift(data) {
+  var placement = data.placement;
+  var basePlacement = placement.split('-')[0];
+  var shiftvariation = placement.split('-')[1];
+
+  // if shift shiftvariation is specified, run the modifier
+  if (shiftvariation) {
+    var _data$offsets = data.offsets,
+        reference = _data$offsets.reference,
+        popper = _data$offsets.popper;
+
+    var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
+    var side = isVertical ? 'left' : 'top';
+    var measurement = isVertical ? 'width' : 'height';
+
+    var shiftOffsets = {
+      start: defineProperty({}, side, reference[side]),
+      end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])
+    };
+
+    data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
+  }
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by update method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function hide(data) {
+  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
+    return data;
+  }
+
+  var refRect = data.offsets.reference;
+  var bound = find(data.instance.modifiers, function (modifier) {
+    return modifier.name === 'preventOverflow';
+  }).boundaries;
+
+  if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
+    // Avoid unnecessary DOM access if visibility hasn't changed
+    if (data.hide === true) {
+      return data;
+    }
+
+    data.hide = true;
+    data.attributes['x-out-of-boundaries'] = '';
+  } else {
+    // Avoid unnecessary DOM access if visibility hasn't changed
+    if (data.hide === false) {
+      return data;
+    }
+
+    data.hide = false;
+    data.attributes['x-out-of-boundaries'] = false;
+  }
+
+  return data;
+}
+
+/**
+ * @function
+ * @memberof Modifiers
+ * @argument {Object} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {Object} The data object, properly modified
+ */
+function inner(data) {
+  var placement = data.placement;
+  var basePlacement = placement.split('-')[0];
+  var _data$offsets = data.offsets,
+      popper = _data$offsets.popper,
+      reference = _data$offsets.reference;
+
+  var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
+
+  var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
+
+  popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
+
+  data.placement = getOppositePlacement(placement);
+  data.offsets.popper = getClientRect(popper);
+
+  return data;
+}
+
+/**
+ * Modifier function, each modifier can have a function of this type assigned
+ * to its `fn` property.<br />
+ * These functions will be called on each update, this means that you must
+ * make sure they are performant enough to avoid performance bottlenecks.
+ *
+ * @function ModifierFn
+ * @argument {dataObject} data - The data object generated by `update` method
+ * @argument {Object} options - Modifiers configuration and options
+ * @returns {dataObject} The data object, properly modified
+ */
+
+/**
+ * Modifiers are plugins used to alter the behavior of your poppers.<br />
+ * Popper.js uses a set of 9 modifiers to provide all the basic functionalities
+ * needed by the library.
+ *
+ * Usually you don't want to override the `order`, `fn` and `onLoad` props.
+ * All the other properties are configurations that could be tweaked.
+ * @namespace modifiers
+ */
+var modifiers = {
+  /**
+   * Modifier used to shift the popper on the start or end of its reference
+   * element.<br />
+   * It will read the variation of the `placement` property.<br />
+   * It can be one either `-end` or `-start`.
+   * @memberof modifiers
+   * @inner
+   */
+  shift: {
+    /** @prop {number} order=100 - Index used to define the order of execution */
+    order: 100,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: shift
+  },
+
+  /**
+   * The `offset` modifier can shift your popper on both its axis.
+   *
+   * It accepts the following units:
+   * - `px` or unitless, interpreted as pixels
+   * - `%` or `%r`, percentage relative to the length of the reference element
+   * - `%p`, percentage relative to the length of the popper element
+   * - `vw`, CSS viewport width unit
+   * - `vh`, CSS viewport height unit
+   *
+   * For length is intended the main axis relative to the placement of the popper.<br />
+   * This means that if the placement is `top` or `bottom`, the length will be the
+   * `width`. In case of `left` or `right`, it will be the height.
+   *
+   * You can provide a single value (as `Number` or `String`), or a pair of values
+   * as `String` divided by a comma or one (or more) white spaces.<br />
+   * The latter is a deprecated method because it leads to confusion and will be
+   * removed in v2.<br />
+   * Additionally, it accepts additions and subtractions between different units.
+   * Note that multiplications and divisions aren't supported.
+   *
+   * Valid examples are:
+   * ```
+   * 10
+   * '10%'
+   * '10, 10'
+   * '10%, 10'
+   * '10 + 10%'
+   * '10 - 5vh + 3%'
+   * '-10px + 5vh, 5px - 6%'
+   * ```
+   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
+   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.
+   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  offset: {
+    /** @prop {number} order=200 - Index used to define the order of execution */
+    order: 200,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: offset,
+    /** @prop {Number|String} offset=0
+     * The offset value as described in the modifier description
+     */
+    offset: 0
+  },
+
+  /**
+   * Modifier used to prevent the popper from being positioned outside the boundary.
+   *
+   * An scenario exists where the reference itself is not within the boundaries.<br />
+   * We can say it has "escaped the boundaries" — or just "escaped".<br />
+   * In this case we need to decide whether the popper should either:
+   *
+   * - detach from the reference and remain "trapped" in the boundaries, or
+   * - if it should ignore the boundary and "escape with its reference"
+   *
+   * When `escapeWithReference` is set to`true` and reference is completely
+   * outside its boundaries, the popper will overflow (or completely leave)
+   * the boundaries in order to remain attached to the edge of the reference.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  preventOverflow: {
+    /** @prop {number} order=300 - Index used to define the order of execution */
+    order: 300,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: preventOverflow,
+    /**
+     * @prop {Array} [priority=['left','right','top','bottom']]
+     * Popper will try to prevent overflow following these priorities by default,
+     * then, it could overflow on the left and on top of the `boundariesElement`
+     */
+    priority: ['left', 'right', 'top', 'bottom'],
+    /**
+     * @prop {number} padding=5
+     * Amount of pixel used to define a minimum distance between the boundaries
+     * and the popper this makes sure the popper has always a little padding
+     * between the edges of its container
+     */
+    padding: 5,
+    /**
+     * @prop {String|HTMLElement} boundariesElement='scrollParent'
+     * Boundaries used by the modifier, can be `scrollParent`, `window`,
+     * `viewport` or any DOM element.
+     */
+    boundariesElement: 'scrollParent'
+  },
+
+  /**
+   * Modifier used to make sure the reference and its popper stay near eachothers
+   * without leaving any gap between the two. Expecially useful when the arrow is
+   * enabled and you want to assure it to point to its reference element.
+   * It cares only about the first axis, you can still have poppers with margin
+   * between the popper and its reference element.
+   * @memberof modifiers
+   * @inner
+   */
+  keepTogether: {
+    /** @prop {number} order=400 - Index used to define the order of execution */
+    order: 400,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: keepTogether
+  },
+
+  /**
+   * This modifier is used to move the `arrowElement` of the popper to make
+   * sure it is positioned between the reference element and its popper element.
+   * It will read the outer size of the `arrowElement` node to detect how many
+   * pixels of conjuction are needed.
+   *
+   * It has no effect if no `arrowElement` is provided.
+   * @memberof modifiers
+   * @inner
+   */
+  arrow: {
+    /** @prop {number} order=500 - Index used to define the order of execution */
+    order: 500,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: arrow,
+    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
+    element: '[x-arrow]'
+  },
+
+  /**
+   * Modifier used to flip the popper's placement when it starts to overlap its
+   * reference element.
+   *
+   * Requires the `preventOverflow` modifier before it in order to work.
+   *
+   * **NOTE:** this modifier will interrupt the current update cycle and will
+   * restart it if it detects the need to flip the placement.
+   * @memberof modifiers
+   * @inner
+   */
+  flip: {
+    /** @prop {number} order=600 - Index used to define the order of execution */
+    order: 600,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: flip,
+    /**
+     * @prop {String|Array} behavior='flip'
+     * The behavior used to change the popper's placement. It can be one of
+     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
+     * placements (with optional variations).
+     */
+    behavior: 'flip',
+    /**
+     * @prop {number} padding=5
+     * The popper will flip if it hits the edges of the `boundariesElement`
+     */
+    padding: 5,
+    /**
+     * @prop {String|HTMLElement} boundariesElement='viewport'
+     * The element which will define the boundaries of the popper position,
+     * the popper will never be placed outside of the defined boundaries
+     * (except if keepTogether is enabled)
+     */
+    boundariesElement: 'viewport'
+  },
+
+  /**
+   * Modifier used to make the popper flow toward the inner of the reference element.
+   * By default, when this modifier is disabled, the popper will be placed outside
+   * the reference element.
+   * @memberof modifiers
+   * @inner
+   */
+  inner: {
+    /** @prop {number} order=700 - Index used to define the order of execution */
+    order: 700,
+    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
+    enabled: false,
+    /** @prop {ModifierFn} */
+    fn: inner
+  },
+
+  /**
+   * Modifier used to hide the popper when its reference element is outside of the
+   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can
+   * be used to hide with a CSS selector the popper when its reference is
+   * out of boundaries.
+   *
+   * Requires the `preventOverflow` modifier before it in order to work.
+   * @memberof modifiers
+   * @inner
+   */
+  hide: {
+    /** @prop {number} order=800 - Index used to define the order of execution */
+    order: 800,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: hide
+  },
+
+  /**
+   * Computes the style that will be applied to the popper element to gets
+   * properly positioned.
+   *
+   * Note that this modifier will not touch the DOM, it just prepares the styles
+   * so that `applyStyle` modifier can apply it. This separation is useful
+   * in case you need to replace `applyStyle` with a custom implementation.
+   *
+   * This modifier has `850` as `order` value to maintain backward compatibility
+   * with previous versions of Popper.js. Expect the modifiers ordering method
+   * to change in future major versions of the library.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  computeStyle: {
+    /** @prop {number} order=850 - Index used to define the order of execution */
+    order: 850,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: computeStyle,
+    /**
+     * @prop {Boolean} gpuAcceleration=true
+     * If true, it uses the CSS 3d transformation to position the popper.
+     * Otherwise, it will use the `top` and `left` properties.
+     */
+    gpuAcceleration: true,
+    /**
+     * @prop {string} [x='bottom']
+     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
+     * Change this if your popper should grow in a direction different from `bottom`
+     */
+    x: 'bottom',
+    /**
+     * @prop {string} [x='left']
+     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
+     * Change this if your popper should grow in a direction different from `right`
+     */
+    y: 'right'
+  },
+
+  /**
+   * Applies the computed styles to the popper element.
+   *
+   * All the DOM manipulations are limited to this modifier. This is useful in case
+   * you want to integrate Popper.js inside a framework or view library and you
+   * want to delegate all the DOM manipulations to it.
+   *
+   * Note that if you disable this modifier, you must make sure the popper element
+   * has its position set to `absolute` before Popper.js can do its work!
+   *
+   * Just disable this modifier and define you own to achieve the desired effect.
+   *
+   * @memberof modifiers
+   * @inner
+   */
+  applyStyle: {
+    /** @prop {number} order=900 - Index used to define the order of execution */
+    order: 900,
+    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
+    enabled: true,
+    /** @prop {ModifierFn} */
+    fn: applyStyle,
+    /** @prop {Function} */
+    onLoad: applyStyleOnLoad,
+    /**
+     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
+     * @prop {Boolean} gpuAcceleration=true
+     * If true, it uses the CSS 3d transformation to position the popper.
+     * Otherwise, it will use the `top` and `left` properties.
+     */
+    gpuAcceleration: undefined
+  }
+};
+
+/**
+ * The `dataObject` is an object containing all the informations used by Popper.js
+ * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
+ * @name dataObject
+ * @property {Object} data.instance The Popper.js instance
+ * @property {String} data.placement Placement applied to popper
+ * @property {String} data.originalPlacement Placement originally defined on init
+ * @property {Boolean} data.flipped True if popper has been flipped by flip modifier
+ * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.
+ * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
+ * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)
+ * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)
+ * @property {Object} data.boundaries Offsets of the popper boundaries
+ * @property {Object} data.offsets The measurements of popper, reference and arrow elements.
+ * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
+ * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
+ * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
+ */
+
+/**
+ * Default options provided to Popper.js constructor.<br />
+ * These can be overriden using the `options` argument of Popper.js.<br />
+ * To override an option, simply pass as 3rd argument an object with the same
+ * structure of this object, example:
+ * ```
+ * new Popper(ref, pop, {
+ *   modifiers: {
+ *     preventOverflow: { enabled: false }
+ *   }
+ * })
+ * ```
+ * @type {Object}
+ * @static
+ * @memberof Popper
+ */
+var Defaults = {
+  /**
+   * Popper's placement
+   * @prop {Popper.placements} placement='bottom'
+   */
+  placement: 'bottom',
+
+  /**
+   * Whether events (resize, scroll) are initially enabled
+   * @prop {Boolean} eventsEnabled=true
+   */
+  eventsEnabled: true,
+
+  /**
+   * Set to true if you want to automatically remove the popper when
+   * you call the `destroy` method.
+   * @prop {Boolean} removeOnDestroy=false
+   */
+  removeOnDestroy: false,
+
+  /**
+   * Callback called when the popper is created.<br />
+   * By default, is set to no-op.<br />
+   * Access Popper.js instance with `data.instance`.
+   * @prop {onCreate}
+   */
+  onCreate: function onCreate() {},
+
+  /**
+   * Callback called when the popper is updated, this callback is not called
+   * on the initialization/creation of the popper, but only on subsequent
+   * updates.<br />
+   * By default, is set to no-op.<br />
+   * Access Popper.js instance with `data.instance`.
+   * @prop {onUpdate}
+   */
+  onUpdate: function onUpdate() {},
+
+  /**
+   * List of modifiers used to modify the offsets before they are applied to the popper.
+   * They provide most of the functionalities of Popper.js
+   * @prop {modifiers}
+   */
+  modifiers: modifiers
+};
+
+/**
+ * @callback onCreate
+ * @param {dataObject} data
+ */
+
+/**
+ * @callback onUpdate
+ * @param {dataObject} data
+ */
+
+// Utils
+// Methods
+var Popper = function () {
+  /**
+   * Create a new Popper.js instance
+   * @class Popper
+   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper
+   * @param {HTMLElement} popper - The HTML element used as popper.
+   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
+   * @return {Object} instance - The generated Popper.js instance
+   */
+  function Popper(reference, popper) {
+    var _this = this;
+
+    var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
+    classCallCheck(this, Popper);
+
+    this.scheduleUpdate = function () {
+      return requestAnimationFrame(_this.update);
+    };
+
+    // make update() debounced, so that it only runs at most once-per-tick
+    this.update = debounce(this.update.bind(this));
+
+    // with {} we create a new object with the options inside it
+    this.options = _extends({}, Popper.Defaults, options);
+
+    // init state
+    this.state = {
+      isDestroyed: false,
+      isCreated: false,
+      scrollParents: []
+    };
+
+    // get reference and popper elements (allow jQuery wrappers)
+    this.reference = reference && reference.jquery ? reference[0] : reference;
+    this.popper = popper && popper.jquery ? popper[0] : popper;
+
+    // Deep merge modifiers options
+    this.options.modifiers = {};
+    Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {
+      _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
+    });
+
+    // Refactoring modifiers' list (Object => Array)
+    this.modifiers = Object.keys(this.options.modifiers).map(function (name) {
+      return _extends({
+        name: name
+      }, _this.options.modifiers[name]);
+    })
+    // sort the modifiers by order
+    .sort(function (a, b) {
+      return a.order - b.order;
+    });
+
+    // modifiers have the ability to execute arbitrary code when Popper.js get inited
+    // such code is executed in the same order of its modifier
+    // they could add new properties to their options configuration
+    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
+    this.modifiers.forEach(function (modifierOptions) {
+      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
+        modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);
+      }
+    });
+
+    // fire the first update to position the popper in the right place
+    this.update();
+
+    var eventsEnabled = this.options.eventsEnabled;
+    if (eventsEnabled) {
+      // setup event listeners, they will take care of update the position in specific situations
+      this.enableEventListeners();
+    }
+
+    this.state.eventsEnabled = eventsEnabled;
+  }
+
+  // We can't use class properties because they don't get listed in the
+  // class prototype and break stuff like Sinon stubs
+
+
+  createClass(Popper, [{
+    key: 'update',
+    value: function update$$1() {
+      return update.call(this);
+    }
+  }, {
+    key: 'destroy',
+    value: function destroy$$1() {
+      return destroy.call(this);
+    }
+  }, {
+    key: 'enableEventListeners',
+    value: function enableEventListeners$$1() {
+      return enableEventListeners.call(this);
+    }
+  }, {
+    key: 'disableEventListeners',
+    value: function disableEventListeners$$1() {
+      return disableEventListeners.call(this);
+    }
+
+    /**
+     * Schedule an update, it will run on the next UI update available
+     * @method scheduleUpdate
+     * @memberof Popper
+     */
+
+
+    /**
+     * Collection of utilities useful when writing custom modifiers.
+     * Starting from version 1.7, this method is available only if you
+     * include `popper-utils.js` before `popper.js`.
+     *
+     * **DEPRECATION**: This way to access PopperUtils is deprecated
+     * and will be removed in v2! Use the PopperUtils module directly instead.
+     * Due to the high instability of the methods contained in Utils, we can't
+     * guarantee them to follow semver. Use them at your own risk!
+     * @static
+     * @private
+     * @type {Object}
+     * @deprecated since version 1.8
+     * @member Utils
+     * @memberof Popper
+     */
+
+  }]);
+  return Popper;
+}();
+
+/**
+ * The `referenceObject` is an object that provides an interface compatible with Popper.js
+ * and lets you use it as replacement of a real DOM node.<br />
+ * You can use this method to position a popper relatively to a set of coordinates
+ * in case you don't have a DOM node to use as reference.
+ *
+ * ```
+ * new Popper(referenceObject, popperNode);
+ * ```
+ *
+ * NB: This feature isn't supported in Internet Explorer 10
+ * @name referenceObject
+ * @property {Function} data.getBoundingClientRect
+ * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
+ * @property {number} data.clientWidth
+ * An ES6 getter that will return the width of the virtual reference element.
+ * @property {number} data.clientHeight
+ * An ES6 getter that will return the height of the virtual reference element.
+ */
+
+
+Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
+Popper.placements = placements;
+Popper.Defaults = Defaults;
+
+return Popper;
+
+})));
+//# sourceMappingURL=popper.js.map
diff --git a/dist/umd/popper.js.map b/dist/umd/popper.js.map
new file mode 100644
index 0000000..0e383bf
--- /dev/null
+++ b/dist/umd/popper.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.js","sources":["../../src/utils/debounce.js","../../src/utils/isFunction.js","../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/isIE10.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/runModifiers.js","../../src/methods/update.js","../../src/utils/isModifierEnabled.js","../../src/utils/getSupportedPropertyName.js","../../src/methods/destroy.js","../../src/utils/getWindow.js","../../src/utils/setupEventListeners.js","../../src/methods/enableEventListeners.js","../../src/utils/removeEventListeners.js","../../src/methods/disableEventListeners.js","../../src/utils/isNumeric.js","../../src/utils/setStyles.js","../../src/utils/setAttributes.js","../../src/modifiers/applyStyle.js","../../src/modifiers/computeStyle.js","../../src/utils/isModifierRequired.js","../../src/modifiers/arrow.js","../../src/utils/getOppositeVariation.js","../../src/methods/placements.js","../../src/utils/clockwise.js","../../src/modifiers/flip.js","../../src/modifiers/keepTogether.js","../../src/modifiers/offset.js","../../src/modifiers/preventOverflow.js","../../src/modifiers/shift.js","../../src/modifiers/hide.js","../../src/modifiers/inner.js","../../src/modifiers/index.js","../../src/methods/defaults.js","../../src/index.js"],"sourcesContent":["const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n  data.offsets.popper.position = 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroy the popper\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicity asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper.\n * @param {Object} options - Popper.js options\n */\nexport function applyStyleOnLoad(\n  reference,\n  popper,\n  options,\n  modifierOptions,\n  state\n) {\n  // compute reference element offsets\n  const referenceOffsets = getReferenceOffsets(state, popper, reference);\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  const placement = computeAutoPlacement(\n    options.placement,\n    referenceOffsets,\n    popper,\n    reference,\n    options.modifiers.flip.boundariesElement,\n    options.modifiers.flip.padding\n  );\n\n  popper.setAttribute('x-placement', placement);\n\n  // Apply `position` to popper before anything else because\n  // without the position applied we can't guarantee correct computations\n  setStyles(popper, { position: 'absolute' });\n\n  return options;\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  // floor sides to avoid blurry text\n  const offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right),\n  };\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjuction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","/**\n * List of accepted placements to use as values of the `placement` option.<br />\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.<br />\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-right` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nexport default [\n  'auto-start',\n  'auto',\n  'auto-end',\n  'top-start',\n  'top',\n  'top-end',\n  'right-start',\n  'right',\n  'right-end',\n  'bottom-end',\n  'bottom',\n  'bottom-start',\n  'left-end',\n  'left',\n  'left-start',\n];\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    const flippedVariation =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement\n  );\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side = ['left', 'top'].indexOf(placement) !== -1\n      ? 'primary'\n      : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 'left' : 'top'] =\n    reference[basePlacement] -\n    (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     */\n    boundariesElement: 'viewport',\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overriden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param 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diff --git a/dist/umd/popper.min.js b/dist/umd/popper.min.js
new file mode 100644
index 0000000..0f20d2a
--- /dev/null
+++ b/dist/umd/popper.min.js
@@ -0,0 +1,5 @@
+/*
+ Copyright (C) Federico Zivolo 2017
+ Distributed under the MIT License (license terms are at http://opensource.org/licenses/MIT).
+ */(function(e,t){'object'==typeof exports&&'undefined'!=typeof module?module.exports=t():'function'==typeof define&&define.amd?define(t):e.Popper=t()})(this,function(){'use strict';function e(e){return e&&'[object Function]'==={}.toString.call(e)}function t(e,t){if(1!==e.nodeType)return[];var o=getComputedStyle(e,null);return t?o[t]:o}function o(e){return'HTML'===e.nodeName?e:e.parentNode||e.host}function n(e){if(!e)return document.body;switch(e.nodeName){case'HTML':case'BODY':return e.ownerDocument.body;case'#document':return e.body;}var i=t(e),r=i.overflow,p=i.overflowX,s=i.overflowY;return /(auto|scroll)/.test(r+s+p)?e:n(o(e))}function r(e){var o=e&&e.offsetParent,i=o&&o.nodeName;return i&&'BODY'!==i&&'HTML'!==i?-1!==['TD','TABLE'].indexOf(o.nodeName)&&'static'===t(o,'position')?r(o):o:e?e.ownerDocument.documentElement:document.documentElement}function p(e){var t=e.nodeName;return'BODY'!==t&&('HTML'===t||r(e.firstElementChild)===e)}function s(e){return 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r=O(n,t,e),p=v(o.placement,r,t,e,o.modifiers.flip.boundariesElement,o.modifiers.flip.padding);return t.setAttribute('x-placement',p),Y(t,{position:'absolute'}),o},gpuAcceleration:void 0}}},fe});
+//# sourceMappingURL=popper.min.js.map
diff --git a/dist/umd/popper.min.js.map b/dist/umd/popper.min.js.map
new file mode 100644
index 0000000..c467f5b
--- /dev/null
+++ b/dist/umd/popper.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.min.js","sources":["../../src/utils/isFunction.js","../../src/utils/getStyleComputedProperty.js","../../src/utils/getParentNode.js","../../src/utils/getScrollParent.js","../../src/utils/getOffsetParent.js","../../src/utils/isOffsetContainer.js","../../src/utils/getRoot.js","../../src/utils/findCommonOffsetParent.js","../../src/utils/getScroll.js","../../src/utils/includeScroll.js","../../src/utils/getBordersSize.js","../../src/utils/getWindowSizes.js","../../src/utils/getClientRect.js","../../src/utils/getBoundingClientRect.js","../../src/utils/getOffsetRectRelativeToArbitraryNode.js","../../src/utils/getViewportOffsetRectRelativeToArtbitraryNode.js","../../src/utils/isFixed.js","../../src/utils/getBoundaries.js","../../src/utils/computeAutoPlacement.js","../../src/utils/getReferenceOffsets.js","../../src/utils/getOuterSizes.js","../../src/utils/getOppositePlacement.js","../../src/utils/getPopperOffsets.js","../../src/utils/find.js","../../src/utils/findIndex.js","../../src/utils/runModifiers.js","../../src/methods/update.js","../../src/utils/isModifierEnabled.js","../../src/utils/getSupportedPropertyName.js","../../src/methods/destroy.js","../../src/utils/getWindow.js","../../src/utils/setupEventListeners.js","../../src/methods/enableEventListeners.js","../../src/utils/removeEventListeners.js","../../src/methods/disableEventListeners.js","../../src/utils/isNumeric.js","../../src/utils/setStyles.js","../../src/utils/setAttributes.js","../../src/utils/isModifierRequired.js","../../src/utils/getOppositeVariation.js","../../src/utils/clockwise.js","../../src/modifiers/offset.js","../../src/utils/debounce.js","../../src/modifiers/arrow.js","../../src/modifiers/computeStyle.js","../../src/utils/isIE10.js","../../src/modifiers/flip.js","../../src/index.js","../../src/methods/defaults.js","../../src/modifiers/index.js","../../src/modifiers/shift.js","../../src/modifiers/preventOverflow.js","../../src/modifiers/keepTogether.js","../../src/modifiers/inner.js","../../src/modifiers/hide.js","../../src/modifiers/applyStyle.js"],"sourcesContent":["/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nexport default function isFunction(functionToCheck) {\n  const getType = {};\n  return (\n    functionToCheck &&\n    getType.toString.call(functionToCheck) === '[object Function]'\n  );\n}\n","/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nexport default function getStyleComputedProperty(element, property) {\n  if (element.nodeType !== 1) {\n    return [];\n  }\n  // NOTE: 1 DOM access here\n  const css = getComputedStyle(element, null);\n  return property ? css[property] : css;\n}\n","/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nexport default function getParentNode(element) {\n  if (element.nodeName === 'HTML') {\n    return element;\n  }\n  return element.parentNode || element.host;\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nexport default function getScrollParent(element) {\n  // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n  if (!element) {\n    return document.body\n  }\n\n  switch (element.nodeName) {\n    case 'HTML':\n    case 'BODY':\n      return element.ownerDocument.body\n    case '#document':\n      return element.body\n  }\n\n  // Firefox want us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);\n  if (/(auto|scroll)/.test(overflow + overflowY + overflowX)) {\n    return element;\n  }\n\n  return getScrollParent(getParentNode(element));\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nexport default function getOffsetParent(element) {\n  // NOTE: 1 DOM access here\n  const offsetParent = element && element.offsetParent;\n  const nodeName = offsetParent && offsetParent.nodeName;\n\n  if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n    if (element) {\n      return element.ownerDocument.documentElement\n    }\n\n    return document.documentElement;\n  }\n\n  // .offsetParent will return the closest TD or TABLE in case\n  // no offsetParent is present, I hate this job...\n  if (\n    ['TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 &&\n    getStyleComputedProperty(offsetParent, 'position') === 'static'\n  ) {\n    return getOffsetParent(offsetParent);\n  }\n\n  return offsetParent;\n}\n","import getOffsetParent from './getOffsetParent';\n\nexport default function isOffsetContainer(element) {\n  const { nodeName } = element;\n  if (nodeName === 'BODY') {\n    return false;\n  }\n  return (\n    nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element\n  );\n}\n","/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nexport default function getRoot(node) {\n  if (node.parentNode !== null) {\n    return getRoot(node.parentNode);\n  }\n\n  return node;\n}\n","import isOffsetContainer from './isOffsetContainer';\nimport getRoot from './getRoot';\nimport getOffsetParent from './getOffsetParent';\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nexport default function findCommonOffsetParent(element1, element2) {\n  // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n  if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n    return document.documentElement;\n  }\n\n  // Here we make sure to give as \"start\" the element that comes first in the DOM\n  const order =\n    element1.compareDocumentPosition(element2) &\n    Node.DOCUMENT_POSITION_FOLLOWING;\n  const start = order ? element1 : element2;\n  const end = order ? element2 : element1;\n\n  // Get common ancestor container\n  const range = document.createRange();\n  range.setStart(start, 0);\n  range.setEnd(end, 0);\n  const { commonAncestorContainer } = range;\n\n  // Both nodes are inside #document\n  if (\n    (element1 !== commonAncestorContainer &&\n      element2 !== commonAncestorContainer) ||\n    start.contains(end)\n  ) {\n    if (isOffsetContainer(commonAncestorContainer)) {\n      return commonAncestorContainer;\n    }\n\n    return getOffsetParent(commonAncestorContainer);\n  }\n\n  // one of the nodes is inside shadowDOM, find which one\n  const element1root = getRoot(element1);\n  if (element1root.host) {\n    return findCommonOffsetParent(element1root.host, element2);\n  } else {\n    return findCommonOffsetParent(element1, getRoot(element2).host);\n  }\n}\n","/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nexport default function getScroll(element, side = 'top') {\n  const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n  const nodeName = element.nodeName;\n\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    const html = element.ownerDocument.documentElement;\n    const scrollingElement = element.ownerDocument.scrollingElement || html;\n    return scrollingElement[upperSide];\n  }\n\n  return element[upperSide];\n}\n","import getScroll from './getScroll';\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nexport default function includeScroll(rect, element, subtract = false) {\n  const scrollTop = getScroll(element, 'top');\n  const scrollLeft = getScroll(element, 'left');\n  const modifier = subtract ? -1 : 1;\n  rect.top += scrollTop * modifier;\n  rect.bottom += scrollTop * modifier;\n  rect.left += scrollLeft * modifier;\n  rect.right += scrollLeft * modifier;\n  return rect;\n}\n","/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nexport default function getBordersSize(styles, axis) {\n  const sideA = axis === 'x' ? 'Left' : 'Top';\n  const sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n  return (\n    parseFloat(styles[`border${sideA}Width`], 10) +\n    parseFloat(styles[`border${sideB}Width`], 10)\n  );\n}\n","import isIE10 from './isIE10';\n\nfunction getSize(axis, body, html, computedStyle) {\n  return Math.max(\n    body[`offset${axis}`],\n    body[`scroll${axis}`],\n    html[`client${axis}`],\n    html[`offset${axis}`],\n    html[`scroll${axis}`],\n    isIE10()\n      ? html[`offset${axis}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`] +\n        computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]\n      : 0\n  );\n}\n\nexport default function getWindowSizes() {\n  const body = document.body;\n  const html = document.documentElement;\n  const computedStyle = isIE10() && getComputedStyle(html);\n\n  return {\n    height: getSize('Height', body, html, computedStyle),\n    width: getSize('Width', body, html, computedStyle),\n  };\n}\n","/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nexport default function getClientRect(offsets) {\n  return {\n    ...offsets,\n    right: offsets.left + offsets.width,\n    bottom: offsets.top + offsets.height,\n  };\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getBordersSize from './getBordersSize';\nimport getWindowSizes from './getWindowSizes';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\nimport isIE10 from './isIE10';\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nexport default function getBoundingClientRect(element) {\n  let rect = {};\n\n  // IE10 10 FIX: Please, don't ask, the element isn't\n  // considered in DOM in some circumstances...\n  // This isn't reproducible in IE10 compatibility mode of IE11\n  if (isIE10()) {\n    try {\n      rect = element.getBoundingClientRect();\n      const scrollTop = getScroll(element, 'top');\n      const scrollLeft = getScroll(element, 'left');\n      rect.top += scrollTop;\n      rect.left += scrollLeft;\n      rect.bottom += scrollTop;\n      rect.right += scrollLeft;\n    } catch (err) {}\n  } else {\n    rect = element.getBoundingClientRect();\n  }\n\n  const result = {\n    left: rect.left,\n    top: rect.top,\n    width: rect.right - rect.left,\n    height: rect.bottom - rect.top,\n  };\n\n  // subtract scrollbar size from sizes\n  const sizes = element.nodeName === 'HTML' ? getWindowSizes() : {};\n  const width =\n    sizes.width || element.clientWidth || result.right - result.left;\n  const height =\n    sizes.height || element.clientHeight || result.bottom - result.top;\n\n  let horizScrollbar = element.offsetWidth - width;\n  let vertScrollbar = element.offsetHeight - height;\n\n  // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n  // we make this check conditional for performance reasons\n  if (horizScrollbar || vertScrollbar) {\n    const styles = getStyleComputedProperty(element);\n    horizScrollbar -= getBordersSize(styles, 'x');\n    vertScrollbar -= getBordersSize(styles, 'y');\n\n    result.width -= horizScrollbar;\n    result.height -= vertScrollbar;\n  }\n\n  return getClientRect(result);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport includeScroll from './includeScroll';\nimport getScrollParent from './getScrollParent';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport runIsIE10 from './isIE10';\nimport getClientRect from './getClientRect';\n\nexport default function getOffsetRectRelativeToArbitraryNode(children, parent) {\n  const isIE10 = runIsIE10();\n  const isHTML = parent.nodeName === 'HTML';\n  const childrenRect = getBoundingClientRect(children);\n  const parentRect = getBoundingClientRect(parent);\n  const scrollParent = getScrollParent(children);\n\n  const styles = getStyleComputedProperty(parent);\n  const borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n  const borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n  let offsets = getClientRect({\n    top: childrenRect.top - parentRect.top - borderTopWidth,\n    left: childrenRect.left - parentRect.left - borderLeftWidth,\n    width: childrenRect.width,\n    height: childrenRect.height,\n  });\n  offsets.marginTop = 0;\n  offsets.marginLeft = 0;\n\n  // Subtract margins of documentElement in case it's being used as parent\n  // we do this only on HTML because it's the only element that behaves\n  // differently when margins are applied to it. The margins are included in\n  // the box of the documentElement, in the other cases not.\n  if (!isIE10 && isHTML) {\n    const marginTop = parseFloat(styles.marginTop, 10);\n    const marginLeft = parseFloat(styles.marginLeft, 10);\n\n    offsets.top -= borderTopWidth - marginTop;\n    offsets.bottom -= borderTopWidth - marginTop;\n    offsets.left -= borderLeftWidth - marginLeft;\n    offsets.right -= borderLeftWidth - marginLeft;\n\n    // Attach marginTop and marginLeft because in some circumstances we may need them\n    offsets.marginTop = marginTop;\n    offsets.marginLeft = marginLeft;\n  }\n\n  if (\n    isIE10\n      ? parent.contains(scrollParent)\n      : parent === scrollParent && scrollParent.nodeName !== 'BODY'\n  ) {\n    offsets = includeScroll(offsets, parent);\n  }\n\n  return offsets;\n}\n","import getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getScroll from './getScroll';\nimport getClientRect from './getClientRect';\n\nexport default function getViewportOffsetRectRelativeToArtbitraryNode(element) {\n  const html = element.ownerDocument.documentElement;\n  const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n  const width = Math.max(html.clientWidth, window.innerWidth || 0);\n  const height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n  const scrollTop = getScroll(html);\n  const scrollLeft = getScroll(html, 'left');\n\n  const offset = {\n    top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n    left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n    width,\n    height,\n  };\n\n  return getClientRect(offset);\n}\n","import getStyleComputedProperty from './getStyleComputedProperty';\nimport getParentNode from './getParentNode';\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nexport default function isFixed(element) {\n  const nodeName = element.nodeName;\n  if (nodeName === 'BODY' || nodeName === 'HTML') {\n    return false;\n  }\n  if (getStyleComputedProperty(element, 'position') === 'fixed') {\n    return true;\n  }\n  return isFixed(getParentNode(element));\n}\n","import getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\nimport getViewportOffsetRectRelativeToArtbitraryNode from './getViewportOffsetRectRelativeToArtbitraryNode';\nimport getWindowSizes from './getWindowSizes';\nimport isFixed from './isFixed';\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @returns {Object} Coordinates of the boundaries\n */\nexport default function getBoundaries(\n  popper,\n  reference,\n  padding,\n  boundariesElement\n) {\n  // NOTE: 1 DOM access here\n  let boundaries = { top: 0, left: 0 };\n  const offsetParent = findCommonOffsetParent(popper, reference);\n\n  // Handle viewport case\n  if (boundariesElement === 'viewport') {\n    boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent);\n  } else {\n    // Handle other cases based on DOM element used as boundaries\n    let boundariesNode;\n    if (boundariesElement === 'scrollParent') {\n      boundariesNode = getScrollParent(getParentNode(reference));\n      if (boundariesNode.nodeName === 'BODY') {\n        boundariesNode = popper.ownerDocument.documentElement;\n      }\n    } else if (boundariesElement === 'window') {\n      boundariesNode = popper.ownerDocument.documentElement;\n    } else {\n      boundariesNode = boundariesElement;\n    }\n\n    const offsets = getOffsetRectRelativeToArbitraryNode(\n      boundariesNode,\n      offsetParent\n    );\n\n    // In case of HTML, we need a different computation\n    if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n      const { height, width } = getWindowSizes();\n      boundaries.top += offsets.top - offsets.marginTop;\n      boundaries.bottom = height + offsets.top;\n      boundaries.left += offsets.left - offsets.marginLeft;\n      boundaries.right = width + offsets.left;\n    } else {\n      // for all the other DOM elements, this one is good\n      boundaries = offsets;\n    }\n  }\n\n  // Add paddings\n  boundaries.left += padding;\n  boundaries.top += padding;\n  boundaries.right -= padding;\n  boundaries.bottom -= padding;\n\n  return boundaries;\n}\n","import getBoundaries from '../utils/getBoundaries';\n\nfunction getArea({ width, height }) {\n  return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeAutoPlacement(\n  placement,\n  refRect,\n  popper,\n  reference,\n  boundariesElement,\n  padding = 0\n) {\n  if (placement.indexOf('auto') === -1) {\n    return placement;\n  }\n\n  const boundaries = getBoundaries(\n    popper,\n    reference,\n    padding,\n    boundariesElement\n  );\n\n  const rects = {\n    top: {\n      width: boundaries.width,\n      height: refRect.top - boundaries.top,\n    },\n    right: {\n      width: boundaries.right - refRect.right,\n      height: boundaries.height,\n    },\n    bottom: {\n      width: boundaries.width,\n      height: boundaries.bottom - refRect.bottom,\n    },\n    left: {\n      width: refRect.left - boundaries.left,\n      height: boundaries.height,\n    },\n  };\n\n  const sortedAreas = Object.keys(rects)\n    .map(key => ({\n      key,\n      ...rects[key],\n      area: getArea(rects[key]),\n    }))\n    .sort((a, b) => b.area - a.area);\n\n  const filteredAreas = sortedAreas.filter(\n    ({ width, height }) =>\n      width >= popper.clientWidth && height >= popper.clientHeight\n  );\n\n  const computedPlacement = filteredAreas.length > 0\n    ? filteredAreas[0].key\n    : sortedAreas[0].key;\n\n  const variation = placement.split('-')[1];\n\n  return computedPlacement + (variation ? `-${variation}` : '');\n}\n","import findCommonOffsetParent from './findCommonOffsetParent';\nimport getOffsetRectRelativeToArbitraryNode from './getOffsetRectRelativeToArbitraryNode';\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nexport default function getReferenceOffsets(state, popper, reference) {\n  const commonOffsetParent = findCommonOffsetParent(popper, reference);\n  return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent);\n}\n","/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nexport default function getOuterSizes(element) {\n  const styles = getComputedStyle(element);\n  const x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);\n  const y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);\n  const result = {\n    width: element.offsetWidth + y,\n    height: element.offsetHeight + x,\n  };\n  return result;\n}\n","/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nexport default function getOppositePlacement(placement) {\n  const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n  return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);\n}\n","import getOuterSizes from './getOuterSizes';\nimport getOppositePlacement from './getOppositePlacement';\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nexport default function getPopperOffsets(popper, referenceOffsets, placement) {\n  placement = placement.split('-')[0];\n\n  // Get popper node sizes\n  const popperRect = getOuterSizes(popper);\n\n  // Add position, width and height to our offsets object\n  const popperOffsets = {\n    width: popperRect.width,\n    height: popperRect.height,\n  };\n\n  // depending by the popper placement we have to compute its offsets slightly differently\n  const isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n  const mainSide = isHoriz ? 'top' : 'left';\n  const secondarySide = isHoriz ? 'left' : 'top';\n  const measurement = isHoriz ? 'height' : 'width';\n  const secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n  popperOffsets[mainSide] =\n    referenceOffsets[mainSide] +\n    referenceOffsets[measurement] / 2 -\n    popperRect[measurement] / 2;\n  if (placement === secondarySide) {\n    popperOffsets[secondarySide] =\n      referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n  } else {\n    popperOffsets[secondarySide] =\n      referenceOffsets[getOppositePlacement(secondarySide)];\n  }\n\n  return popperOffsets;\n}\n","/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function find(arr, check) {\n  // use native find if supported\n  if (Array.prototype.find) {\n    return arr.find(check);\n  }\n\n  // use `filter` to obtain the same behavior of `find`\n  return arr.filter(check)[0];\n}\n","import find from './find';\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nexport default function findIndex(arr, prop, value) {\n  // use native findIndex if supported\n  if (Array.prototype.findIndex) {\n    return arr.findIndex(cur => cur[prop] === value);\n  }\n\n  // use `find` + `indexOf` if `findIndex` isn't supported\n  const match = find(arr, obj => obj[prop] === value);\n  return arr.indexOf(match);\n}\n","import isFunction from './isFunction';\nimport findIndex from './findIndex';\nimport getClientRect from '../utils/getClientRect';\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nexport default function runModifiers(modifiers, data, ends) {\n  const modifiersToRun = ends === undefined\n    ? modifiers\n    : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n  modifiersToRun.forEach(modifier => {\n    if (modifier['function']) { // eslint-disable-line dot-notation\n      console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n    }\n    const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n    if (modifier.enabled && isFunction(fn)) {\n      // Add properties to offsets to make them a complete clientRect object\n      // we do this before each modifier to make sure the previous one doesn't\n      // mess with these values\n      data.offsets.popper = getClientRect(data.offsets.popper);\n      data.offsets.reference = getClientRect(data.offsets.reference);\n\n      data = fn(data, modifier);\n    }\n  });\n\n  return data;\n}\n","import computeAutoPlacement from '../utils/computeAutoPlacement';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.<br />\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nexport default function update() {\n  // if popper is destroyed, don't perform any further update\n  if (this.state.isDestroyed) {\n    return;\n  }\n\n  let data = {\n    instance: this,\n    styles: {},\n    arrowStyles: {},\n    attributes: {},\n    flipped: false,\n    offsets: {},\n  };\n\n  // compute reference element offsets\n  data.offsets.reference = getReferenceOffsets(\n    this.state,\n    this.popper,\n    this.reference\n  );\n\n  // compute auto placement, store placement inside the data object,\n  // modifiers will be able to edit `placement` if needed\n  // and refer to originalPlacement to know the original value\n  data.placement = computeAutoPlacement(\n    this.options.placement,\n    data.offsets.reference,\n    this.popper,\n    this.reference,\n    this.options.modifiers.flip.boundariesElement,\n    this.options.modifiers.flip.padding\n  );\n\n  // store the computed placement inside `originalPlacement`\n  data.originalPlacement = data.placement;\n\n  // compute the popper offsets\n  data.offsets.popper = getPopperOffsets(\n    this.popper,\n    data.offsets.reference,\n    data.placement\n  );\n  data.offsets.popper.position = 'absolute';\n\n  // run the modifiers\n  data = runModifiers(this.modifiers, data);\n\n  // the first `update` will call `onCreate` callback\n  // the other ones will call `onUpdate` callback\n  if (!this.state.isCreated) {\n    this.state.isCreated = true;\n    this.options.onCreate(data);\n  } else {\n    this.options.onUpdate(data);\n  }\n}\n","/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nexport default function isModifierEnabled(modifiers, modifierName) {\n  return modifiers.some(\n    ({ name, enabled }) => enabled && name === modifierName\n  );\n}\n","/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nexport default function getSupportedPropertyName(property) {\n  const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n  const upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n  for (let i = 0; i < prefixes.length - 1; i++) {\n    const prefix = prefixes[i];\n    const toCheck = prefix ? `${prefix}${upperProp}` : property;\n    if (typeof document.body.style[toCheck] !== 'undefined') {\n      return toCheck;\n    }\n  }\n  return null;\n}\n","import isModifierEnabled from '../utils/isModifierEnabled';\nimport getSupportedPropertyName from '../utils/getSupportedPropertyName';\n\n/**\n * Destroy the popper\n * @method\n * @memberof Popper\n */\nexport default function destroy() {\n  this.state.isDestroyed = true;\n\n  // touch DOM only if `applyStyle` modifier is enabled\n  if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n    this.popper.removeAttribute('x-placement');\n    this.popper.style.left = '';\n    this.popper.style.position = '';\n    this.popper.style.top = '';\n    this.popper.style[getSupportedPropertyName('transform')] = '';\n  }\n\n  this.disableEventListeners();\n\n  // remove the popper if user explicity asked for the deletion on destroy\n  // do not use `remove` because IE11 doesn't support it\n  if (this.options.removeOnDestroy) {\n    this.popper.parentNode.removeChild(this.popper);\n  }\n  return this;\n}\n","/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nexport default function getWindow(element) {\n  const ownerDocument = element.ownerDocument;\n  return ownerDocument ? ownerDocument.defaultView : window;\n}\n","import getScrollParent from './getScrollParent';\nimport getWindow from './getWindow';\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n  const isBody = scrollParent.nodeName === 'BODY';\n  const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n  target.addEventListener(event, callback, { passive: true });\n\n  if (!isBody) {\n    attachToScrollParents(\n      getScrollParent(target.parentNode),\n      event,\n      callback,\n      scrollParents\n    );\n  }\n  scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function setupEventListeners(\n  reference,\n  options,\n  state,\n  updateBound\n) {\n  // Resize event listener on window\n  state.updateBound = updateBound;\n  getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n  // Scroll event listener on scroll parents\n  const scrollElement = getScrollParent(reference);\n  attachToScrollParents(\n    scrollElement,\n    'scroll',\n    state.updateBound,\n    state.scrollParents\n  );\n  state.scrollElement = scrollElement;\n  state.eventsEnabled = true;\n\n  return state;\n}\n","import setupEventListeners from '../utils/setupEventListeners';\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nexport default function enableEventListeners() {\n  if (!this.state.eventsEnabled) {\n    this.state = setupEventListeners(\n      this.reference,\n      this.options,\n      this.state,\n      this.scheduleUpdate\n    );\n  }\n}\n","import getWindow from './getWindow';\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nexport default function removeEventListeners(reference, state) {\n  // Remove resize event listener on window\n  getWindow(reference).removeEventListener('resize', state.updateBound);\n\n  // Remove scroll event listener on scroll parents\n  state.scrollParents.forEach(target => {\n    target.removeEventListener('scroll', state.updateBound);\n  });\n\n  // Reset state\n  state.updateBound = null;\n  state.scrollParents = [];\n  state.scrollElement = null;\n  state.eventsEnabled = false;\n  return state;\n}\n","import removeEventListeners from '../utils/removeEventListeners';\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger onUpdate callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nexport default function disableEventListeners() {\n  if (this.state.eventsEnabled) {\n    cancelAnimationFrame(this.scheduleUpdate);\n    this.state = removeEventListeners(this.reference, this.state);\n  }\n}\n","/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nexport default function isNumeric(n) {\n  return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n","import isNumeric from './isNumeric';\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setStyles(element, styles) {\n  Object.keys(styles).forEach(prop => {\n    let unit = '';\n    // add unit if the value is numeric and is one of the following\n    if (\n      ['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !==\n        -1 &&\n      isNumeric(styles[prop])\n    ) {\n      unit = 'px';\n    }\n    element.style[prop] = styles[prop] + unit;\n  });\n}\n","/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nexport default function setAttributes(element, attributes) {\n  Object.keys(attributes).forEach(function(prop) {\n    const value = attributes[prop];\n    if (value !== false) {\n      element.setAttribute(prop, attributes[prop]);\n    } else {\n      element.removeAttribute(prop);\n    }\n  });\n}\n","import find from './find';\n\n/**\n * Helper used to know if the given modifier depends from another one.<br />\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nexport default function isModifierRequired(\n  modifiers,\n  requestingName,\n  requestedName\n) {\n  const requesting = find(modifiers, ({ name }) => name === requestingName);\n\n  const isRequired =\n    !!requesting &&\n    modifiers.some(modifier => {\n      return (\n        modifier.name === requestedName &&\n        modifier.enabled &&\n        modifier.order < requesting.order\n      );\n    });\n\n  if (!isRequired) {\n    const requesting = `\\`${requestingName}\\``;\n    const requested = `\\`${requestedName}\\``;\n    console.warn(\n      `${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`\n    );\n  }\n  return isRequired;\n}\n","/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nexport default function getOppositeVariation(variation) {\n  if (variation === 'end') {\n    return 'start';\n  } else if (variation === 'start') {\n    return 'end';\n  }\n  return variation;\n}\n","import placements from '../methods/placements';\n\n// Get rid of `auto` `auto-start` and `auto-end`\nconst validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nexport default function clockwise(placement, counter = false) {\n  const index = validPlacements.indexOf(placement);\n  const arr = validPlacements\n    .slice(index + 1)\n    .concat(validPlacements.slice(0, index));\n  return counter ? arr.reverse() : arr;\n}\n","import isNumeric from '../utils/isNumeric';\nimport getClientRect from '../utils/getClientRect';\nimport find from '../utils/find';\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nexport function toValue(str, measurement, popperOffsets, referenceOffsets) {\n  // separate value from unit\n  const split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n  const value = +split[1];\n  const unit = split[2];\n\n  // If it's not a number it's an operator, I guess\n  if (!value) {\n    return str;\n  }\n\n  if (unit.indexOf('%') === 0) {\n    let element;\n    switch (unit) {\n      case '%p':\n        element = popperOffsets;\n        break;\n      case '%':\n      case '%r':\n      default:\n        element = referenceOffsets;\n    }\n\n    const rect = getClientRect(element);\n    return rect[measurement] / 100 * value;\n  } else if (unit === 'vh' || unit === 'vw') {\n    // if is a vh or vw, we calculate the size based on the viewport\n    let size;\n    if (unit === 'vh') {\n      size = Math.max(\n        document.documentElement.clientHeight,\n        window.innerHeight || 0\n      );\n    } else {\n      size = Math.max(\n        document.documentElement.clientWidth,\n        window.innerWidth || 0\n      );\n    }\n    return size / 100 * value;\n  } else {\n    // if is an explicit pixel unit, we get rid of the unit and keep the value\n    // if is an implicit unit, it's px, and we return just the value\n    return value;\n  }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nexport function parseOffset(\n  offset,\n  popperOffsets,\n  referenceOffsets,\n  basePlacement\n) {\n  const offsets = [0, 0];\n\n  // Use height if placement is left or right and index is 0 otherwise use width\n  // in this way the first offset will use an axis and the second one\n  // will use the other one\n  const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n  // Split the offset string to obtain a list of values and operands\n  // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n  const fragments = offset.split(/(\\+|\\-)/).map(frag => frag.trim());\n\n  // Detect if the offset string contains a pair of values or a single one\n  // they could be separated by comma or space\n  const divider = fragments.indexOf(\n    find(fragments, frag => frag.search(/,|\\s/) !== -1)\n  );\n\n  if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n    console.warn(\n      'Offsets separated by white space(s) are deprecated, use a comma (,) instead.'\n    );\n  }\n\n  // If divider is found, we divide the list of values and operands to divide\n  // them by ofset X and Y.\n  const splitRegex = /\\s*,\\s*|\\s+/;\n  let ops = divider !== -1\n    ? [\n        fragments\n          .slice(0, divider)\n          .concat([fragments[divider].split(splitRegex)[0]]),\n        [fragments[divider].split(splitRegex)[1]].concat(\n          fragments.slice(divider + 1)\n        ),\n      ]\n    : [fragments];\n\n  // Convert the values with units to absolute pixels to allow our computations\n  ops = ops.map((op, index) => {\n    // Most of the units rely on the orientation of the popper\n    const measurement = (index === 1 ? !useHeight : useHeight)\n      ? 'height'\n      : 'width';\n    let mergeWithPrevious = false;\n    return (\n      op\n        // This aggregates any `+` or `-` sign that aren't considered operators\n        // e.g.: 10 + +5 => [10, +, +5]\n        .reduce((a, b) => {\n          if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n            a[a.length - 1] = b;\n            mergeWithPrevious = true;\n            return a;\n          } else if (mergeWithPrevious) {\n            a[a.length - 1] += b;\n            mergeWithPrevious = false;\n            return a;\n          } else {\n            return a.concat(b);\n          }\n        }, [])\n        // Here we convert the string values into number values (in px)\n        .map(str => toValue(str, measurement, popperOffsets, referenceOffsets))\n    );\n  });\n\n  // Loop trough the offsets arrays and execute the operations\n  ops.forEach((op, index) => {\n    op.forEach((frag, index2) => {\n      if (isNumeric(frag)) {\n        offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n      }\n    });\n  });\n  return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nexport default function offset(data, { offset }) {\n  const { placement, offsets: { popper, reference } } = data;\n  const basePlacement = placement.split('-')[0];\n\n  let offsets;\n  if (isNumeric(+offset)) {\n    offsets = [+offset, 0];\n  } else {\n    offsets = parseOffset(offset, popper, reference, basePlacement);\n  }\n\n  if (basePlacement === 'left') {\n    popper.top += offsets[0];\n    popper.left -= offsets[1];\n  } else if (basePlacement === 'right') {\n    popper.top += offsets[0];\n    popper.left += offsets[1];\n  } else if (basePlacement === 'top') {\n    popper.left += offsets[0];\n    popper.top -= offsets[1];\n  } else if (basePlacement === 'bottom') {\n    popper.left += offsets[0];\n    popper.top += offsets[1];\n  }\n\n  data.popper = popper;\n  return data;\n}\n","const isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined';\nconst longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\nlet timeoutDuration = 0;\nfor (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n  if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n    timeoutDuration = 1;\n    break;\n  }\n}\n\nexport function microtaskDebounce(fn) {\n  let called = false\n  return () => {\n    if (called) {\n      return\n    }\n    called = true\n    window.Promise.resolve().then(() => {\n      called = false\n      fn()\n    })\n  }\n}\n\nexport function taskDebounce(fn) {\n  let scheduled = false;\n  return () => {\n    if (!scheduled) {\n      scheduled = true;\n      setTimeout(() => {\n        scheduled = false;\n        fn();\n      }, timeoutDuration);\n    }\n  };\n}\n\nconst supportsMicroTasks = isBrowser && window.Promise\n\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nexport default (supportsMicroTasks\n  ? microtaskDebounce\n  : taskDebounce);\n","import getClientRect from '../utils/getClientRect';\nimport getOuterSizes from '../utils/getOuterSizes';\nimport isModifierRequired from '../utils/isModifierRequired';\nimport getStyleComputedProperty from '../utils/getStyleComputedProperty';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function arrow(data, options) {\n  // arrow depends on keepTogether in order to work\n  if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n    return data;\n  }\n\n  let arrowElement = options.element;\n\n  // if arrowElement is a string, suppose it's a CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = data.instance.popper.querySelector(arrowElement);\n\n    // if arrowElement is not found, don't run the modifier\n    if (!arrowElement) {\n      return data;\n    }\n  } else {\n    // if the arrowElement isn't a query selector we must check that the\n    // provided DOM node is child of its popper node\n    if (!data.instance.popper.contains(arrowElement)) {\n      console.warn(\n        'WARNING: `arrow.element` must be child of its popper element!'\n      );\n      return data;\n    }\n  }\n\n  const placement = data.placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n  const len = isVertical ? 'height' : 'width';\n  const sideCapitalized = isVertical ? 'Top' : 'Left';\n  const side = sideCapitalized.toLowerCase();\n  const altSide = isVertical ? 'left' : 'top';\n  const opSide = isVertical ? 'bottom' : 'right';\n  const arrowElementSize = getOuterSizes(arrowElement)[len];\n\n  //\n  // extends keepTogether behavior making sure the popper and its\n  // reference have enough pixels in conjuction\n  //\n\n  // top/left side\n  if (reference[opSide] - arrowElementSize < popper[side]) {\n    data.offsets.popper[side] -=\n      popper[side] - (reference[opSide] - arrowElementSize);\n  }\n  // bottom/right side\n  if (reference[side] + arrowElementSize > popper[opSide]) {\n    data.offsets.popper[side] +=\n      reference[side] + arrowElementSize - popper[opSide];\n  }\n  data.offsets.popper = getClientRect(data.offsets.popper);\n\n  // compute center of the popper\n  const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n  // Compute the sideValue using the updated popper offsets\n  // take popper margin in account because we don't have this info available\n  const css = getStyleComputedProperty(data.instance.popper);\n  const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`], 10);\n  const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`], 10);\n  let sideValue =\n    center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n  // prevent arrowElement from being placed not contiguously to its popper\n  sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n  data.arrowElement = arrowElement;\n  data.offsets.arrow = {\n    [side]: Math.round(sideValue),\n    [altSide]: '', // make sure to unset any eventual altSide value from the DOM node\n  };\n\n  return data;\n}\n","import getSupportedPropertyName from '../utils/getSupportedPropertyName';\nimport find from '../utils/find';\nimport getOffsetParent from '../utils/getOffsetParent';\nimport getBoundingClientRect from '../utils/getBoundingClientRect';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function computeStyle(data, options) {\n  const { x, y } = options;\n  const { popper } = data.offsets;\n\n  // Remove this legacy support in Popper.js v2\n  const legacyGpuAccelerationOption = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'applyStyle'\n  ).gpuAcceleration;\n  if (legacyGpuAccelerationOption !== undefined) {\n    console.warn(\n      'WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!'\n    );\n  }\n  const gpuAcceleration =\n    legacyGpuAccelerationOption !== undefined\n      ? legacyGpuAccelerationOption\n      : options.gpuAcceleration;\n\n  const offsetParent = getOffsetParent(data.instance.popper);\n  const offsetParentRect = getBoundingClientRect(offsetParent);\n\n  // Styles\n  const styles = {\n    position: popper.position,\n  };\n\n  // floor sides to avoid blurry text\n  const offsets = {\n    left: Math.floor(popper.left),\n    top: Math.floor(popper.top),\n    bottom: Math.floor(popper.bottom),\n    right: Math.floor(popper.right),\n  };\n\n  const sideA = x === 'bottom' ? 'top' : 'bottom';\n  const sideB = y === 'right' ? 'left' : 'right';\n\n  // if gpuAcceleration is set to `true` and transform is supported,\n  //  we use `translate3d` to apply the position to the popper we\n  // automatically use the supported prefixed version if needed\n  const prefixedProperty = getSupportedPropertyName('transform');\n\n  // now, let's make a step back and look at this code closely (wtf?)\n  // If the content of the popper grows once it's been positioned, it\n  // may happen that the popper gets misplaced because of the new content\n  // overflowing its reference element\n  // To avoid this problem, we provide two options (x and y), which allow\n  // the consumer to define the offset origin.\n  // If we position a popper on top of a reference element, we can set\n  // `x` to `top` to make the popper grow towards its top instead of\n  // its bottom.\n  let left, top;\n  if (sideA === 'bottom') {\n    top = -offsetParentRect.height + offsets.bottom;\n  } else {\n    top = offsets.top;\n  }\n  if (sideB === 'right') {\n    left = -offsetParentRect.width + offsets.right;\n  } else {\n    left = offsets.left;\n  }\n  if (gpuAcceleration && prefixedProperty) {\n    styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;\n    styles[sideA] = 0;\n    styles[sideB] = 0;\n    styles.willChange = 'transform';\n  } else {\n    // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n    const invertTop = sideA === 'bottom' ? -1 : 1;\n    const invertLeft = sideB === 'right' ? -1 : 1;\n    styles[sideA] = top * invertTop;\n    styles[sideB] = left * invertLeft;\n    styles.willChange = `${sideA}, ${sideB}`;\n  }\n\n  // Attributes\n  const attributes = {\n    'x-placement': data.placement,\n  };\n\n  // Update `data` attributes, styles and arrowStyles\n  data.attributes = { ...attributes, ...data.attributes };\n  data.styles = { ...styles, ...data.styles };\n  data.arrowStyles = { ...data.offsets.arrow, ...data.arrowStyles };\n\n  return data;\n}\n","/**\n * Tells if you are running Internet Explorer 10\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean} isIE10\n */\nlet isIE10 = undefined;\n\nexport default function() {\n  if (isIE10 === undefined) {\n    isIE10 = navigator.appVersion.indexOf('MSIE 10') !== -1;\n  }\n  return isIE10;\n}\n","import getOppositePlacement from '../utils/getOppositePlacement';\nimport getOppositeVariation from '../utils/getOppositeVariation';\nimport getPopperOffsets from '../utils/getPopperOffsets';\nimport runModifiers from '../utils/runModifiers';\nimport getBoundaries from '../utils/getBoundaries';\nimport isModifierEnabled from '../utils/isModifierEnabled';\nimport clockwise from '../utils/clockwise';\n\nconst BEHAVIORS = {\n  FLIP: 'flip',\n  CLOCKWISE: 'clockwise',\n  COUNTERCLOCKWISE: 'counterclockwise',\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function flip(data, options) {\n  // if `inner` modifier is enabled, we can't use the `flip` modifier\n  if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n    return data;\n  }\n\n  if (data.flipped && data.placement === data.originalPlacement) {\n    // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n    return data;\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    options.boundariesElement\n  );\n\n  let placement = data.placement.split('-')[0];\n  let placementOpposite = getOppositePlacement(placement);\n  let variation = data.placement.split('-')[1] || '';\n\n  let flipOrder = [];\n\n  switch (options.behavior) {\n    case BEHAVIORS.FLIP:\n      flipOrder = [placement, placementOpposite];\n      break;\n    case BEHAVIORS.CLOCKWISE:\n      flipOrder = clockwise(placement);\n      break;\n    case BEHAVIORS.COUNTERCLOCKWISE:\n      flipOrder = clockwise(placement, true);\n      break;\n    default:\n      flipOrder = options.behavior;\n  }\n\n  flipOrder.forEach((step, index) => {\n    if (placement !== step || flipOrder.length === index + 1) {\n      return data;\n    }\n\n    placement = data.placement.split('-')[0];\n    placementOpposite = getOppositePlacement(placement);\n\n    const popperOffsets = data.offsets.popper;\n    const refOffsets = data.offsets.reference;\n\n    // using floor because the reference offsets may contain decimals we are not going to consider here\n    const floor = Math.floor;\n    const overlapsRef =\n      (placement === 'left' &&\n        floor(popperOffsets.right) > floor(refOffsets.left)) ||\n      (placement === 'right' &&\n        floor(popperOffsets.left) < floor(refOffsets.right)) ||\n      (placement === 'top' &&\n        floor(popperOffsets.bottom) > floor(refOffsets.top)) ||\n      (placement === 'bottom' &&\n        floor(popperOffsets.top) < floor(refOffsets.bottom));\n\n    const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n    const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n    const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n    const overflowsBottom =\n      floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n    const overflowsBoundaries =\n      (placement === 'left' && overflowsLeft) ||\n      (placement === 'right' && overflowsRight) ||\n      (placement === 'top' && overflowsTop) ||\n      (placement === 'bottom' && overflowsBottom);\n\n    // flip the variation if required\n    const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n    const flippedVariation =\n      !!options.flipVariations &&\n      ((isVertical && variation === 'start' && overflowsLeft) ||\n        (isVertical && variation === 'end' && overflowsRight) ||\n        (!isVertical && variation === 'start' && overflowsTop) ||\n        (!isVertical && variation === 'end' && overflowsBottom));\n\n    if (overlapsRef || overflowsBoundaries || flippedVariation) {\n      // this boolean to detect any flip loop\n      data.flipped = true;\n\n      if (overlapsRef || overflowsBoundaries) {\n        placement = flipOrder[index + 1];\n      }\n\n      if (flippedVariation) {\n        variation = getOppositeVariation(variation);\n      }\n\n      data.placement = placement + (variation ? '-' + variation : '');\n\n      // this object contains `position`, we want to preserve it along with\n      // any additional property we may add in the future\n      data.offsets.popper = {\n        ...data.offsets.popper,\n        ...getPopperOffsets(\n          data.instance.popper,\n          data.offsets.reference,\n          data.placement\n        ),\n      };\n\n      data = runModifiers(data.instance.modifiers, data, 'flip');\n    }\n  });\n  return data;\n}\n","// Utils\nimport debounce from './utils/debounce';\nimport isFunction from './utils/isFunction';\n\n// Methods\nimport update from './methods/update';\nimport destroy from './methods/destroy';\nimport enableEventListeners from './methods/enableEventListeners';\nimport disableEventListeners from './methods/disableEventListeners';\nimport Defaults from './methods/defaults';\nimport placements from './methods/placements';\n\nexport default class Popper {\n  /**\n   * Create a new Popper.js instance\n   * @class Popper\n   * @param {HTMLElement|referenceObject} reference - The reference element used to position the popper\n   * @param {HTMLElement} popper - The HTML element used as popper.\n   * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n   * @return {Object} instance - The generated Popper.js instance\n   */\n  constructor(reference, popper, options = {}) {\n    // make update() debounced, so that it only runs at most once-per-tick\n    this.update = debounce(this.update.bind(this));\n\n    // with {} we create a new object with the options inside it\n    this.options = { ...Popper.Defaults, ...options };\n\n    // init state\n    this.state = {\n      isDestroyed: false,\n      isCreated: false,\n      scrollParents: [],\n    };\n\n    // get reference and popper elements (allow jQuery wrappers)\n    this.reference = reference && reference.jquery ? reference[0] : reference;\n    this.popper = popper && popper.jquery ? popper[0] : popper;\n\n    // Deep merge modifiers options\n    this.options.modifiers = {};\n    Object.keys({\n      ...Popper.Defaults.modifiers,\n      ...options.modifiers,\n    }).forEach(name => {\n      this.options.modifiers[name] = {\n        // If it's a built-in modifier, use it as base\n        ...(Popper.Defaults.modifiers[name] || {}),\n        // If there are custom options, override and merge with default ones\n        ...(options.modifiers ? options.modifiers[name] : {}),\n      };\n    });\n\n    // Refactoring modifiers' list (Object => Array)\n    this.modifiers = Object.keys(this.options.modifiers)\n      .map(name => ({\n        name,\n        ...this.options.modifiers[name],\n      }))\n      // sort the modifiers by order\n      .sort((a, b) => a.order - b.order);\n\n    // modifiers have the ability to execute arbitrary code when Popper.js get inited\n    // such code is executed in the same order of its modifier\n    // they could add new properties to their options configuration\n    // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n    this.modifiers.forEach(modifierOptions => {\n      if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n        modifierOptions.onLoad(\n          this.reference,\n          this.popper,\n          this.options,\n          modifierOptions,\n          this.state\n        );\n      }\n    });\n\n    // fire the first update to position the popper in the right place\n    this.update();\n\n    const eventsEnabled = this.options.eventsEnabled;\n    if (eventsEnabled) {\n      // setup event listeners, they will take care of update the position in specific situations\n      this.enableEventListeners();\n    }\n\n    this.state.eventsEnabled = eventsEnabled;\n  }\n\n  // We can't use class properties because they don't get listed in the\n  // class prototype and break stuff like Sinon stubs\n  update() {\n    return update.call(this);\n  }\n  destroy() {\n    return destroy.call(this);\n  }\n  enableEventListeners() {\n    return enableEventListeners.call(this);\n  }\n  disableEventListeners() {\n    return disableEventListeners.call(this);\n  }\n\n  /**\n   * Schedule an update, it will run on the next UI update available\n   * @method scheduleUpdate\n   * @memberof Popper\n   */\n  scheduleUpdate = () => requestAnimationFrame(this.update);\n\n  /**\n   * Collection of utilities useful when writing custom modifiers.\n   * Starting from version 1.7, this method is available only if you\n   * include `popper-utils.js` before `popper.js`.\n   *\n   * **DEPRECATION**: This way to access PopperUtils is deprecated\n   * and will be removed in v2! Use the PopperUtils module directly instead.\n   * Due to the high instability of the methods contained in Utils, we can't\n   * guarantee them to follow semver. Use them at your own risk!\n   * @static\n   * @private\n   * @type {Object}\n   * @deprecated since version 1.8\n   * @member Utils\n   * @memberof Popper\n   */\n  static Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\n\n  static placements = placements;\n\n  static Defaults = Defaults;\n}\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.<br />\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n */\n","import modifiers from '../modifiers/index';\n\n/**\n * Default options provided to Popper.js constructor.<br />\n * These can be overriden using the `options` argument of Popper.js.<br />\n * To override an option, simply pass as 3rd argument an object with the same\n * structure of this object, example:\n * ```\n * new Popper(ref, pop, {\n *   modifiers: {\n *     preventOverflow: { enabled: false }\n *   }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nexport default {\n  /**\n   * Popper's placement\n   * @prop {Popper.placements} placement='bottom'\n   */\n  placement: 'bottom',\n\n  /**\n   * Whether events (resize, scroll) are initially enabled\n   * @prop {Boolean} eventsEnabled=true\n   */\n  eventsEnabled: true,\n\n  /**\n   * Set to true if you want to automatically remove the popper when\n   * you call the `destroy` method.\n   * @prop {Boolean} removeOnDestroy=false\n   */\n  removeOnDestroy: false,\n\n  /**\n   * Callback called when the popper is created.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onCreate}\n   */\n  onCreate: () => {},\n\n  /**\n   * Callback called when the popper is updated, this callback is not called\n   * on the initialization/creation of the popper, but only on subsequent\n   * updates.<br />\n   * By default, is set to no-op.<br />\n   * Access Popper.js instance with `data.instance`.\n   * @prop {onUpdate}\n   */\n  onUpdate: () => {},\n\n  /**\n   * List of modifiers used to modify the offsets before they are applied to the popper.\n   * They provide most of the functionalities of Popper.js\n   * @prop {modifiers}\n   */\n  modifiers,\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n","import applyStyle, { applyStyleOnLoad } from './applyStyle';\nimport computeStyle from './computeStyle';\nimport arrow from './arrow';\nimport flip from './flip';\nimport keepTogether from './keepTogether';\nimport offset from './offset';\nimport preventOverflow from './preventOverflow';\nimport shift from './shift';\nimport hide from './hide';\nimport inner from './inner';\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.<br />\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.<br />\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nexport default {\n  /**\n   * Modifier used to shift the popper on the start or end of its reference\n   * element.<br />\n   * It will read the variation of the `placement` property.<br />\n   * It can be one either `-end` or `-start`.\n   * @memberof modifiers\n   * @inner\n   */\n  shift: {\n    /** @prop {number} order=100 - Index used to define the order of execution */\n    order: 100,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: shift,\n  },\n\n  /**\n   * The `offset` modifier can shift your popper on both its axis.\n   *\n   * It accepts the following units:\n   * - `px` or unitless, interpreted as pixels\n   * - `%` or `%r`, percentage relative to the length of the reference element\n   * - `%p`, percentage relative to the length of the popper element\n   * - `vw`, CSS viewport width unit\n   * - `vh`, CSS viewport height unit\n   *\n   * For length is intended the main axis relative to the placement of the popper.<br />\n   * This means that if the placement is `top` or `bottom`, the length will be the\n   * `width`. In case of `left` or `right`, it will be the height.\n   *\n   * You can provide a single value (as `Number` or `String`), or a pair of values\n   * as `String` divided by a comma or one (or more) white spaces.<br />\n   * The latter is a deprecated method because it leads to confusion and will be\n   * removed in v2.<br />\n   * Additionally, it accepts additions and subtractions between different units.\n   * Note that multiplications and divisions aren't supported.\n   *\n   * Valid examples are:\n   * ```\n   * 10\n   * '10%'\n   * '10, 10'\n   * '10%, 10'\n   * '10 + 10%'\n   * '10 - 5vh + 3%'\n   * '-10px + 5vh, 5px - 6%'\n   * ```\n   * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n   * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n   * > More on this [reading this issue](https://github.com/FezVrasta/popper.js/issues/373)\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  offset: {\n    /** @prop {number} order=200 - Index used to define the order of execution */\n    order: 200,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: offset,\n    /** @prop {Number|String} offset=0\n     * The offset value as described in the modifier description\n     */\n    offset: 0,\n  },\n\n  /**\n   * Modifier used to prevent the popper from being positioned outside the boundary.\n   *\n   * An scenario exists where the reference itself is not within the boundaries.<br />\n   * We can say it has \"escaped the boundaries\" — or just \"escaped\".<br />\n   * In this case we need to decide whether the popper should either:\n   *\n   * - detach from the reference and remain \"trapped\" in the boundaries, or\n   * - if it should ignore the boundary and \"escape with its reference\"\n   *\n   * When `escapeWithReference` is set to`true` and reference is completely\n   * outside its boundaries, the popper will overflow (or completely leave)\n   * the boundaries in order to remain attached to the edge of the reference.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  preventOverflow: {\n    /** @prop {number} order=300 - Index used to define the order of execution */\n    order: 300,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: preventOverflow,\n    /**\n     * @prop {Array} [priority=['left','right','top','bottom']]\n     * Popper will try to prevent overflow following these priorities by default,\n     * then, it could overflow on the left and on top of the `boundariesElement`\n     */\n    priority: ['left', 'right', 'top', 'bottom'],\n    /**\n     * @prop {number} padding=5\n     * Amount of pixel used to define a minimum distance between the boundaries\n     * and the popper this makes sure the popper has always a little padding\n     * between the edges of its container\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='scrollParent'\n     * Boundaries used by the modifier, can be `scrollParent`, `window`,\n     * `viewport` or any DOM element.\n     */\n    boundariesElement: 'scrollParent',\n  },\n\n  /**\n   * Modifier used to make sure the reference and its popper stay near eachothers\n   * without leaving any gap between the two. Expecially useful when the arrow is\n   * enabled and you want to assure it to point to its reference element.\n   * It cares only about the first axis, you can still have poppers with margin\n   * between the popper and its reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  keepTogether: {\n    /** @prop {number} order=400 - Index used to define the order of execution */\n    order: 400,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: keepTogether,\n  },\n\n  /**\n   * This modifier is used to move the `arrowElement` of the popper to make\n   * sure it is positioned between the reference element and its popper element.\n   * It will read the outer size of the `arrowElement` node to detect how many\n   * pixels of conjuction are needed.\n   *\n   * It has no effect if no `arrowElement` is provided.\n   * @memberof modifiers\n   * @inner\n   */\n  arrow: {\n    /** @prop {number} order=500 - Index used to define the order of execution */\n    order: 500,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: arrow,\n    /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n    element: '[x-arrow]',\n  },\n\n  /**\n   * Modifier used to flip the popper's placement when it starts to overlap its\n   * reference element.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   *\n   * **NOTE:** this modifier will interrupt the current update cycle and will\n   * restart it if it detects the need to flip the placement.\n   * @memberof modifiers\n   * @inner\n   */\n  flip: {\n    /** @prop {number} order=600 - Index used to define the order of execution */\n    order: 600,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: flip,\n    /**\n     * @prop {String|Array} behavior='flip'\n     * The behavior used to change the popper's placement. It can be one of\n     * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n     * placements (with optional variations).\n     */\n    behavior: 'flip',\n    /**\n     * @prop {number} padding=5\n     * The popper will flip if it hits the edges of the `boundariesElement`\n     */\n    padding: 5,\n    /**\n     * @prop {String|HTMLElement} boundariesElement='viewport'\n     * The element which will define the boundaries of the popper position,\n     * the popper will never be placed outside of the defined boundaries\n     * (except if keepTogether is enabled)\n     */\n    boundariesElement: 'viewport',\n  },\n\n  /**\n   * Modifier used to make the popper flow toward the inner of the reference element.\n   * By default, when this modifier is disabled, the popper will be placed outside\n   * the reference element.\n   * @memberof modifiers\n   * @inner\n   */\n  inner: {\n    /** @prop {number} order=700 - Index used to define the order of execution */\n    order: 700,\n    /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n    enabled: false,\n    /** @prop {ModifierFn} */\n    fn: inner,\n  },\n\n  /**\n   * Modifier used to hide the popper when its reference element is outside of the\n   * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n   * be used to hide with a CSS selector the popper when its reference is\n   * out of boundaries.\n   *\n   * Requires the `preventOverflow` modifier before it in order to work.\n   * @memberof modifiers\n   * @inner\n   */\n  hide: {\n    /** @prop {number} order=800 - Index used to define the order of execution */\n    order: 800,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: hide,\n  },\n\n  /**\n   * Computes the style that will be applied to the popper element to gets\n   * properly positioned.\n   *\n   * Note that this modifier will not touch the DOM, it just prepares the styles\n   * so that `applyStyle` modifier can apply it. This separation is useful\n   * in case you need to replace `applyStyle` with a custom implementation.\n   *\n   * This modifier has `850` as `order` value to maintain backward compatibility\n   * with previous versions of Popper.js. Expect the modifiers ordering method\n   * to change in future major versions of the library.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  computeStyle: {\n    /** @prop {number} order=850 - Index used to define the order of execution */\n    order: 850,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: computeStyle,\n    /**\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: true,\n    /**\n     * @prop {string} [x='bottom']\n     * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n     * Change this if your popper should grow in a direction different from `bottom`\n     */\n    x: 'bottom',\n    /**\n     * @prop {string} [x='left']\n     * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n     * Change this if your popper should grow in a direction different from `right`\n     */\n    y: 'right',\n  },\n\n  /**\n   * Applies the computed styles to the popper element.\n   *\n   * All the DOM manipulations are limited to this modifier. This is useful in case\n   * you want to integrate Popper.js inside a framework or view library and you\n   * want to delegate all the DOM manipulations to it.\n   *\n   * Note that if you disable this modifier, you must make sure the popper element\n   * has its position set to `absolute` before Popper.js can do its work!\n   *\n   * Just disable this modifier and define you own to achieve the desired effect.\n   *\n   * @memberof modifiers\n   * @inner\n   */\n  applyStyle: {\n    /** @prop {number} order=900 - Index used to define the order of execution */\n    order: 900,\n    /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n    enabled: true,\n    /** @prop {ModifierFn} */\n    fn: applyStyle,\n    /** @prop {Function} */\n    onLoad: applyStyleOnLoad,\n    /**\n     * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n     * @prop {Boolean} gpuAcceleration=true\n     * If true, it uses the CSS 3d transformation to position the popper.\n     * Otherwise, it will use the `top` and `left` properties.\n     */\n    gpuAcceleration: undefined,\n  },\n};\n\n/**\n * The `dataObject` is an object containing all the informations used by Popper.js\n * this object get passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper.\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow, it expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements.\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function shift(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const shiftvariation = placement.split('-')[1];\n\n  // if shift shiftvariation is specified, run the modifier\n  if (shiftvariation) {\n    const { reference, popper } = data.offsets;\n    const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n    const side = isVertical ? 'left' : 'top';\n    const measurement = isVertical ? 'width' : 'height';\n\n    const shiftOffsets = {\n      start: { [side]: reference[side] },\n      end: {\n        [side]: reference[side] + reference[measurement] - popper[measurement],\n      },\n    };\n\n    data.offsets.popper = { ...popper, ...shiftOffsets[shiftvariation] };\n  }\n\n  return data;\n}\n","import getOffsetParent from '../utils/getOffsetParent';\nimport getBoundaries from '../utils/getBoundaries';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function preventOverflow(data, options) {\n  let boundariesElement =\n    options.boundariesElement || getOffsetParent(data.instance.popper);\n\n  // If offsetParent is the reference element, we really want to\n  // go one step up and use the next offsetParent as reference to\n  // avoid to make this modifier completely useless and look like broken\n  if (data.instance.reference === boundariesElement) {\n    boundariesElement = getOffsetParent(boundariesElement);\n  }\n\n  const boundaries = getBoundaries(\n    data.instance.popper,\n    data.instance.reference,\n    options.padding,\n    boundariesElement\n  );\n  options.boundaries = boundaries;\n\n  const order = options.priority;\n  let popper = data.offsets.popper;\n\n  const check = {\n    primary(placement) {\n      let value = popper[placement];\n      if (\n        popper[placement] < boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.max(popper[placement], boundaries[placement]);\n      }\n      return { [placement]: value };\n    },\n    secondary(placement) {\n      const mainSide = placement === 'right' ? 'left' : 'top';\n      let value = popper[mainSide];\n      if (\n        popper[placement] > boundaries[placement] &&\n        !options.escapeWithReference\n      ) {\n        value = Math.min(\n          popper[mainSide],\n          boundaries[placement] -\n            (placement === 'right' ? popper.width : popper.height)\n        );\n      }\n      return { [mainSide]: value };\n    },\n  };\n\n  order.forEach(placement => {\n    const side = ['left', 'top'].indexOf(placement) !== -1\n      ? 'primary'\n      : 'secondary';\n    popper = { ...popper, ...check[side](placement) };\n  });\n\n  data.offsets.popper = popper;\n\n  return data;\n}\n","/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function keepTogether(data) {\n  const { popper, reference } = data.offsets;\n  const placement = data.placement.split('-')[0];\n  const floor = Math.floor;\n  const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n  const side = isVertical ? 'right' : 'bottom';\n  const opSide = isVertical ? 'left' : 'top';\n  const measurement = isVertical ? 'width' : 'height';\n\n  if (popper[side] < floor(reference[opSide])) {\n    data.offsets.popper[opSide] =\n      floor(reference[opSide]) - popper[measurement];\n  }\n  if (popper[opSide] > floor(reference[side])) {\n    data.offsets.popper[opSide] = floor(reference[side]);\n  }\n\n  return data;\n}\n","import getClientRect from '../utils/getClientRect';\nimport getOppositePlacement from '../utils/getOppositePlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function inner(data) {\n  const placement = data.placement;\n  const basePlacement = placement.split('-')[0];\n  const { popper, reference } = data.offsets;\n  const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n  const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n  popper[isHoriz ? 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'width' : 'height'] : 0);\n\n  data.placement = getOppositePlacement(placement);\n  data.offsets.popper = getClientRect(popper);\n\n  return data;\n}\n","import isModifierRequired from '../utils/isModifierRequired';\nimport find from '../utils/find';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nexport default function hide(data) {\n  if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n    return data;\n  }\n\n  const refRect = data.offsets.reference;\n  const bound = find(\n    data.instance.modifiers,\n    modifier => modifier.name === 'preventOverflow'\n  ).boundaries;\n\n  if (\n    refRect.bottom < bound.top ||\n    refRect.left > bound.right ||\n    refRect.top > bound.bottom ||\n    refRect.right < bound.left\n  ) {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === true) {\n      return data;\n    }\n\n    data.hide = true;\n    data.attributes['x-out-of-boundaries'] = '';\n  } else {\n    // Avoid unnecessary DOM access if visibility hasn't changed\n    if (data.hide === false) {\n      return data;\n    }\n\n    data.hide = false;\n    data.attributes['x-out-of-boundaries'] = false;\n  }\n\n  return data;\n}\n","import setStyles from '../utils/setStyles';\nimport setAttributes from '../utils/setAttributes';\nimport getReferenceOffsets from '../utils/getReferenceOffsets';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nexport default function applyStyle(data) {\n  // any property present in `data.styles` will be applied to the popper,\n  // in this way we can make the 3rd party modifiers add custom styles to it\n  // Be aware, modifiers could override the properties defined in the previous\n  // lines of this modifier!\n  setStyles(data.instance.popper, data.styles);\n\n  // any property present in `data.attributes` will be applied to the popper,\n  // they will be set as HTML attributes of the element\n  setAttributes(data.instance.popper, data.attributes);\n\n  // if arrowElement is defined and arrowStyles has some properties\n  if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n    setStyles(data.arrowElement, data.arrowStyles);\n  }\n\n  return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be 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\ No newline at end of file
diff --git a/lib_popper.php b/lib_popper.php
index e90c876..7a28faa 100644
--- a/lib_popper.php
+++ b/lib_popper.php
@@ -4,7 +4,7 @@ class lib_popper extends \LIB\lib_js{
     public static function get_class(){
         return self::class;}
     public static function js_path(){
-        return new \SYSTEM\PLIB('popper/lib/dist/umd/popper.min.js');}
+        return new \SYSTEM\PLIB('popper/dist/umd/popper.min.js');}
     public static function version(){
         return '1.12.9';}
 }