Implement a custom deployment condition via bash

.travis.yml

@@ -15,18 +15,17 @@ before_deploy:
   - rm -Rf ./node_modules .docs ./preview ./tests *.log*
   - rm -Rf ./src/system/icons/_all
   - rm -Rf ./src/system/tokens/_examples
+
 deploy:
   - provider: npm
     skip_cleanup: true
     email: $NPM_EMAIL
     api_key: $NPM_TOKEN
     on:
-      tags: true
+      condition: ./deployment_condition.sh
-      condition: $(git branch --contains $TRAVIS_TAG | grep -l '^[\* ] master$')
   - provider: pages
     skip_cleanup: true
     github_token: $GITHUB_TOKEN  # Set in the settings page of your repository, as a secure variable
     keep_history: true
     on:
-      tags: true
+      condition: ./deployment_condition.sh
-      condition: $(git branch --contains $TRAVIS_TAG | grep -l '^[\* ] master$')

deployment_condition.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+BRANCH=$(git rev-parse --abbrev-ref HEAD)
+
+if [ "$BRANCH" != "master" ]; then
+  exit 1
+fi
+
+CURRENT_VERSION=$(cat package.json  | jq -r .version)
+PUBLISHED_VERSION=$(yarn info @human-connection/styleguide version --silent)
+
+if [ "$CURRENT_VERSION" == "$PUBLISHED_VERSION" ]; then
+  exit 1
+fi
+
+
+exit 0