publish.yml

name: Publish npm package

on:
  push:
    branches:
      - main

jobs:
  publish:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Setup Node.js
        uses: actions/setup-node@v2
        with:
          node-version: '14'
          registry-url: 'https://registry.npmjs.org'

      - name: Install dependencies
        run: pnpm i

      - name: Run tests
        run: pnpm test

      - name: Check if version changed
        id: version_check
        run: |
          git fetch origin main
          PREVIOUS_VERSION=$(git show origin/main:package.json | jq -r .version)
          CURRENT_VERSION=$(jq -r .version package.json)
          echo "previous_version=$PREVIOUS_VERSION" >> $GITHUB_OUTPUT
          echo "current_version=$CURRENT_VERSION" >> $GITHUB_OUTPUT
          if [ "$PREVIOUS_VERSION" == "$CURRENT_VERSION" ]; then
            echo "Version has not changed. Exiting."
            exit 0
          fi

      - name: Publish to npm
        if: ${{ steps.version_check.outputs.current_version != steps.version_check.outputs.previous_version }}
        run: pnpm publish
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}