release.yml

name: Release

on:
  push:
    tags:
      - "v*.*.*"

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Ensure tag is on default branch
        run: |
          DEFAULT_BRANCH="${{ github.event.repository.default_branch }}"
          if [ -z "$DEFAULT_BRANCH" ]; then
            DEFAULT_BRANCH=$(git remote show origin | sed -n '/HEAD branch/s/.*: //p')
          fi
          TAG_REF="${GITHUB_REF#refs/tags/}"
          TAG_SHA=$(git rev-list -n 1 "$TAG_REF")
          git fetch origin "$DEFAULT_BRANCH":"refs/remotes/origin/$DEFAULT_BRANCH"
          MAIN_SHA=$(git rev-parse "refs/remotes/origin/$DEFAULT_BRANCH")
          if [ "$TAG_SHA" != "$MAIN_SHA" ]; then
            echo "Tag $TAG_REF must point to latest $DEFAULT_BRANCH ($MAIN_SHA), but points to $TAG_SHA" >&2
            exit 1
          fi

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "25.3.0"
          cache: "npm"
          registry-url: "https://registry.npmjs.org"

      - name: Install dependencies
        run: npm ci

      - name: Verify version matches tag and not private
        id: verify
        run: |
          TAG_VERSION=${GITHUB_REF#refs/tags/v}
          PKG_VERSION=$(node -p "require('./package.json').version")
          IS_PRIVATE=$(node -p "Boolean(require('./package.json').private).toString()")
          if [ "$TAG_VERSION" != "$PKG_VERSION" ]; then
            echo "Tag version v$TAG_VERSION does not match package.json version $PKG_VERSION" >&2
            exit 1
          fi
          if [ "$IS_PRIVATE" = "true" ]; then
            echo "package.json has private:true. Publishing public packages requires private:false" >&2
            exit 1
          fi
          echo "version=$PKG_VERSION" >> $GITHUB_OUTPUT

      - name: Typecheck
        run: npm run typecheck

      - name: Test
        run: npm run test:run

      - name: Build
        run: npm run build

      - name: Publish to npm
        env:
          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
        run: |
          npm publish --access public --verbose

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: v${{ steps.verify.outputs.version }}
          name: v${{ steps.verify.outputs.version }}
          generate_release_notes: true
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}