Create npm-publish.yml

.github/workflows/npm-publish.yml

@@ -0,0 +1,53 @@
+name: NPM Publish
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  build-and-publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js with caching
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          registry-url: 'https://registry.npmjs.org'
+          cache: 'npm'                     # Enables npm dependency caching
+          cache-dependency-path: '**/package-lock.json' # Cache key based on lockfile
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: Check version change
+        id: check_version
+        run: |
+          git fetch origin main
+          CURRENT_VERSION=$(node -p "require('./package.json').version")
+          PREV_VERSION=$(git show origin/main:package.json | grep '"version":' | sed -E 's/.*"version": *"([^"]+)".*/\1/')
+          if [ "$CURRENT_VERSION" != "$PREV_VERSION" ]; then
+            echo "Version changed from $PREV_VERSION to $CURRENT_VERSION"
+            echo "version_changed=true" >> $GITHUB_OUTPUT
+          else
+            echo "Version unchanged: $CURRENT_VERSION"
+            echo "version_changed=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Publish to npm
+        if: steps.check_version.outputs.version_changed == 'true'
+        run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}