Release to GitHub and npm workflow (timqian/chart.xkcd)

name: Release to GitHub and npm
 
on:
  push:
    branches: [master, main]
    paths:
      - 'package.json'
  workflow_dispatch:
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  release:
    timeout-minutes: 30
    runs-on: latchkey-small
 
    permissions:
      contents: write
      id-token: write
 
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
 
      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          cache: 'npm'
          node-version: 'lts/*'
          registry-url: 'https://registry.npmjs.org'
 
      - name: Read version from package.json
        id: package
        run: |
          VERSION=$(node -p "require('./package.json').version")
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Version: $VERSION"
 
      - name: Check if release already exists
        id: check_release
        run: |
          if git rev-parse "v${{ steps.package.outputs.version }}" >/dev/null 2>&1; then
            echo "exists=true" >> $GITHUB_OUTPUT
          else
            echo "exists=false" >> $GITHUB_OUTPUT
          fi
 
      - name: Install dependencies
        if: steps.check_release.outputs.exists == 'false'
        run: npm install
 
      - name: Build
        if: steps.check_release.outputs.exists == 'false'
        run: npm run prepublishOnly
 
      - name: Publish to npm
        if: steps.check_release.outputs.exists == 'false'
        run: npm publish
 
      - name: Configure Git
        if: steps.check_release.outputs.exists == 'false'
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
 
      - name: Generate changelog
        if: steps.check_release.outputs.exists == 'false'
        id: changelog
        run: |
          PREV_TAG=$(git describe --tags --abbrev=0 2>/dev/null || echo "")
          REPO="${{ github.repository }}"
          if [ -z "$PREV_TAG" ]; then
            COMMITS=$(git log --pretty=format:"- [%s](https://github.com/${REPO}/commit/%H)" HEAD)
          else
            COMMITS=$(git log --pretty=format:"- [%s](https://github.com/${REPO}/commit/%H)" "${PREV_TAG}..HEAD")
          fi
          echo "commits<<EOF" >> $GITHUB_OUTPUT
          echo "$COMMITS" >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT
 
      - name: Create Git Tag
        if: steps.check_release.outputs.exists == 'false'
        run: |
          git tag -a v${{ steps.package.outputs.version }} -m "Release v${{ steps.package.outputs.version }}"
          git push origin v${{ steps.package.outputs.version }}
 
      - name: Create GitHub Release
        if: steps.check_release.outputs.exists == 'false'
        uses: softprops/action-gh-release@v1
        with:
          tag_name: v${{ steps.package.outputs.version }}
          name: Release v${{ steps.package.outputs.version }}
          body: |
            ## What's Changed
 
            ${{ steps.changelog.outputs.commits }}
          draft: false
          prerelease: false
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}