publish.yml

name: Publish to NPM

on:
  push:
    tags:
      - 'v*'

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      id-token: write
    steps:
      - uses: actions/checkout@v5

      - name: Setup Node.js
        uses: actions/setup-node@v5
        with:
          node-version: '20'
          registry-url: 'https://registry.npmjs.org'

      - name: Verify tag matches package.json version
        env:
          REF_NAME: ${{ github.ref_name }}
        run: |
          TAG_VERSION="${REF_NAME#v}"
          PKG_VERSION="$(node -p "require('./package.json').version")"
          if [ "$TAG_VERSION" != "$PKG_VERSION" ]; then
            echo "::error::Tag version ($TAG_VERSION) does not match package.json version ($PKG_VERSION)."
            exit 1
          fi

      - name: Install dependencies
        run: npm ci

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