check.yml

name: Check

# Builds the site for every pull request, the same way the deploy workflow does,
# so that a change that breaks the build (a share-image headline that no longer
# fits, a page that fails to render) shows up before it reaches main.

on:
  pull_request:
    branches: [main]

permissions:
  contents: read

concurrency:
  group: check-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          # The sitemap's <lastmod> and the dates on doc pages come from git history.
          fetch-depth: 0

      # The pnpm version comes from package.json's packageManager, the same one
      # a local `pnpm` switches to
      - name: Setup pnpm
        uses: pnpm/action-setup@v4

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Build site
        run: pnpm build
        env:
          GITHUB_TOKEN: ${{ github.token }}