publish.yml

name: Publish to npm

on:
  push:
    branches: main

permissions:
  contents: write

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - uses: actions/setup-node@v3
        with:
          node-version: "18"
      
      - run: npm ci
      
      - name: Get current npm version
        id: current_version
        run: |
          CURRENT_VERSION=$(node -p 'require(`./package.json`).version')
          echo "current_version=${CURRENT_VERSION}" >> $GITHUB_ENV
          echo "Current npm version: ${CURRENT_VERSION}"
      
      - name: Get previous npm version
        id: previous_version
        run: |
          PREV_VERSION=$(npm show $(node -p 'require(`./package.json`).name') version)
          echo "prev_version=${PREV_VERSION}" >> $GITHUB_ENV
          echo "Previous npm version: ${PREV_VERSION}"
      
      - name: Check version change
        id: version_check
        run: |
          if [ "${{ env.current_version }}" != "${{ env.prev_version }}" ]; then
            echo "changed=true" >> $GITHUB_ENV
          else
            echo "changed=false" >> $GITHUB_ENV
          fi
          echo "Version changed: ${{ env.changed }}"
      
      - name: Publish to npm
        if: env.changed == 'true'
        uses: JS-DevTools/npm-publish@v3
        with:
          token: ${{ secrets.NPM_TOKEN }}
      
      - name: Create GitHub Release
        if: env.changed == 'true'
        uses: actions/create-release@v1
        with:
          tag_name: v${{ env.current_version }}
          release_name: Release v${{ env.current_version }}
          body: New release v${{ env.current_version }}
          draft: false
          prerelease: false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}