release.yml

name: Release to npm

on:
  release:
    types: [published]

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write
    steps:
      - uses: actions/checkout@v6

      - uses: actions/setup-node@v6
        with:
          node-version: "22"
          registry-url: "https://registry.npmjs.org"
          cache: "npm"

      - name: Set version from release tag
        run: |
          VERSION="${GITHUB_REF_NAME#v}"
          echo "VERSION=$VERSION" >> "$GITHUB_ENV"

      - name: Verify package version matches release tag
        run: |
          PACKAGE_VERSION=$(node -p "require('./package.json').version")
          if [ "$PACKAGE_VERSION" != "$VERSION" ]; then
            echo "::error::Release tag $GITHUB_REF_NAME resolves to version $VERSION, but package.json is $PACKAGE_VERSION."
            exit 1
          fi

      - name: Install dependencies
        run: npm ci

      - name: Typecheck
        run: npm run typecheck

      - name: Test
        run: npm test

      - name: Build
        run: npm run build

      - name: Verify package contents
        run: npm pack --dry-run

      - name: Publish package
        run: npm publish --access public --provenance
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}