bundler-integrations.yml

name: Bundler integrations

on:
  workflow_call:
  workflow_dispatch:

jobs:
  test-tree-shaking:
    name: Test tree shaking
    runs-on: ubuntu-22.04

    env:
      PUPPETEER_SKIP_DOWNLOAD: true

    strategy:
      fail-fast: false

      matrix:
        bundler:
          - rollup
          - webpack
          - vite

    steps:
      - name: Checkout
        uses: actions/checkout@v4.2.2

      - name: Restore dependencies
        uses: ./.github/workflows/actions/install-node

      - name: Build GOV.UK Frontend
        uses: ./.github/workflows/actions/build

      - name: Build with bundler
        run: npm run ${{matrix.bundler}} -w @govuk-frontend/bundler-integrations

      # Check output for modules that should not be included
      - name: Check absence of unused modules in `single-component.js`
        working-directory: ./.github/workflows/bundler-integrations
        run: |
          ! grep "Accordion" dist/${{matrix.bundler}}/single-component.js -q

      - name: Check absence of unused utility functions in `single-component.js`
        working-directory: ./.github/workflows/bundler-integrations
        run: |
          ! grep "getFragmentFromUrl" dist/${{matrix.bundler}}/single-component.js -q

      - name: Check presence of modules in `initAll.js`
        working-directory: ./.github/workflows/bundler-integrations
        run: |
          grep "Accordion" dist/${{matrix.bundler}}/initAll.js -q