publish.yml

name: Publish on version change

on:
  push:
    branches:
      - main

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - uses: actions/setup-node@v3
        with:
          node-version: '18.x'
          registry-url: 'https://registry.npmjs.org'
      - name: Check version and publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_AUTH_TOKEN }}
        run: |
          CURRENT_VERSION=$(node -p "require('./package.json').version");
          git checkout $(git log --format="%H" -n 2 | tail -1) --quiet;
          LAST_VERSION=$(node -p "require('./package.json').version");
          if [ "$CURRENT_VERSION" != "$LAST_VERSION" ]; then
            git checkout main;
            npm install;
            npm run build;
            npm run test;
            npm publish;
          else
            echo "Version has not changed. Skipping publish. CURRENT_VERSION: $CURRENT_VERSION, LAST_VERSION: $LAST_VERSION";
          fi