This PR adds a new GitHub workflow that automatically publishes the package to npm when a tag is pushed to the repository.

Changes Made

• Added .github/workflows/publish.yml workflow file that:
  • Triggers only on tag pushes (any tag pattern)
  • Runs all CI steps before publishing: lint, build, test, and browser tests
  • Publishes to npm using the NPM_TOKEN repository secret
  • Uses modern GitHub Actions versions (checkout@v4, setup-node@v4)

Workflow Details

The publish workflow follows these steps:

1. Checkout code - Uses actions/checkout@v4
2. Setup Node.js 22 - Uses actions/setup-node@v4 with npm registry configuration
3. Install dependencies - Runs npm install (including puppeteer for browser tests)
4. Run linter - Executes npm run lint
5. Build project - Executes npm run build
6. Run tests - Executes npm test
7. Run browser tests - Executes npm run test:browser
8. Publish to npm - Runs npm publish with NPM_TOKEN authentication

The workflow ensures that all quality checks pass before publishing, maintaining the same CI standards as the existing nodejs.yml workflow.

Usage

Once the NPM_TOKEN repository secret is configured, the workflow will automatically publish to npm whenever a tag is pushed:

git tag v3.0.1
git push origin v3.0.1

Fixes #25.

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