diff --git a/.github/workflows/test.lint.yml b/.github/workflows/test.lint.yml
new file mode 100644
index 00000000..591c0652
--- /dev/null
+++ b/.github/workflows/test.lint.yml
@@ -0,0 +1,61 @@
+name: test:lint
+
+on: push
+
+jobs:
+  files-changed:
+    name: Detect File Changes - lint
+    runs-on: ubuntu-latest
+    outputs:
+      lint: ${{ steps.filter.outputs.lint }}
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.1.7
+      - uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
+        id: filter
+        with:
+          filters: |
+            lint:
+              - '.github/workflows/**/*'
+              - 'src/**/*'
+
+#  build:
+#    if: needs.files-changed.outputs.frontend == 'true'
+#    name: Build - Frontend
+#    needs: files-changed
+#    runs-on: ubuntu-latest
+#    steps:
+#      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.1.7
+#      - uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.0.3
+#        with:
+#          node-version-file: './.tool-versions'
+#      - name: Frontend | Build
+#        run: npm install && npm run build
+#        working-directory: ./frontend
+
+  lint:
+    if: needs.files-changed.outputs.lint == 'true'
+    name: Lint
+    needs: files-changed
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.1.7
+      - uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.0.3
+        with:
+          node-version-file: './.tool-versions'
+      - name: Lint
+        run: npm install && npm run test:lint:eslint
+        working-directory: ./
+
+#  unit:
+#    if: needs.files-changed.outputs.frontend == 'true'
+#    name: Unit - Frontend
+#    needs: files-changed
+#    runs-on: ubuntu-latest
+#    steps:
+#      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.1.7
+#      - uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.0.3
+#        with:
+#          node-version-file: './.tool-versions'
+#      - name: Frontend | Unit
+#        run: npm install && npm run test:unit
+#        working-directory: ./frontend
diff --git a/.tool-versions b/.tool-versions
new file mode 100644
index 00000000..4120b7f8
--- /dev/null
+++ b/.tool-versions
@@ -0,0 +1 @@
+nodejs 20.12.1
diff --git a/GLOSSAR.md b/GLOSSAR.md
new file mode 100644
index 00000000..8d8dfa12
--- /dev/null
+++ b/GLOSSAR.md
@@ -0,0 +1,22 @@
+# Glossar
+
+#### Map
+A geographic interactive map and an instance of the Utopia Map with its own name, its own users and [Items](#Item) in predefined [Layers](#Layer)
+
+#### Layer
+A predefined category of [Items](#Item), with predefined [Map Markers](#Map-Marker), icons, colors, texts, [Popups](#Popups) and [Profiles](#Profile)
+
+#### Item
+An item is an object whith a profile which is part of one [Layer](#Layer) and usually has a geographic position shown on the map wiht [Map Marker](#Map-Marker) and [Popup](#Popup)
+
+#### Map Marker
+A marker on a Map which shows the geographic position of an [Item](#Item)
+
+#### Popup
+A small preview of an item which opens on the map when the user clicks it's [Map Marker](#Map-Marker).
+
+#### Profile
+A representation of all the the data of an [Item](#Item)
+
+#### Network
+An initiative that aims to connect people in real life by providing their own [Map instance](#Map) to its circle
diff --git a/package.json b/package.json
index 275d9b0c..977e88ea 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
   "types": "dist/index.d.ts",
   "scripts": {
     "build": "rollup -c",
-    "start": "rollup -c -w"
+    "start": "rollup -c -w",
+    "test:lint:eslint": "eslint --ext .ts,.tsx,.js,.jsx,.cjs,.mjs,.json,.yml,.yaml --max-warnings 0 ."
   },
   "files": [
     "dist"