update-features.yml

name: Refresh Feature Mappings & Baseline Data

on:
  schedule:
    # Run weekly every Monday at 09:00 UTC
    - cron: "0 9 * * 1"
  workflow_dispatch:

permissions:
  contents: write
  pull-requests: write

jobs:
  refresh-features:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "24"

      - name: Install dependencies
        run: npm install

      - name: Update data & TypeScript dependencies
        run: npm run update:deps

      - name: Sync feature mappings and regenerate FEATURES.md
        run: npm run update:features

      - name: Check for changes in features.json or FEATURES.md
        id: check-changes
        run: |
          if [[ -n "$(git status --porcelain features.json FEATURES.md)" ]]; then
            echo "changes-available=TRUE" >> "$GITHUB_OUTPUT"
            git diff --stat features.json FEATURES.md
          else
            echo "changes-available=FALSE" >> "$GITHUB_OUTPUT"
          fi

      - name: Run tests
        if: steps.check-changes.outputs.changes-available == 'TRUE'
        run: npm test

      - name: Create Pull Request
        if: steps.check-changes.outputs.changes-available == 'TRUE'
        uses: peter-evans/create-pull-request@v7
        with:
          add-paths: |
            features.json
            FEATURES.md
            package.json
            package-lock.json
          commit-message: "chore: refresh Baseline and TypeScript feature mappings"
          title: "chore: refresh Baseline and TypeScript feature mappings"
          body: |
            Automated weekly update of ECMAScript feature mappings, Baseline availability dates (`web-features` / `@mdn/browser-compat-data`), and TypeScript `lib` declarations.
          branch: chore/refresh-feature-mappings
          delete-branch: true