labeler.yml

name: labeler

on:
  pull_request_target:
    types: [opened, synchronize, reopened, edited]

permissions:
  contents: read
  pull-requests: write
  issues: read

concurrency:
  group: labeler-pr-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  label:
    runs-on: ubuntu-latest
    steps:
      # Apply directory-based labels using changes files and .github/labeler.yml
      - uses: actions/labeler@v5
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          sync-labels: true

      - name: Apply type labels from PR title
        uses: github/issue-labeler@v3.4
        with:
          configuration-path: .github/pr-title-labeler.yml
          enable-versioned-regex: 0
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          sync-labels: 0
          include-title: 1
          include-body: 0

      # Checkout out only the base branch's .github/scripts directory.
      # DO NOT check out the PR head, because pull_request_target runs with
      # elevated token permissions and PR-authored code must not be executed.
      - uses: actions/checkout@v4
        with:
          sparse-checkout: .github/scripts

      # Copy P- (priority) labels from issues that GitHub links to this PR via
      # closing keywords such as "Closes #XXX". Area (A-) and type (T-) come
      # from the file/title labelers above, so they are not copied here.
      - name: Copy priority labels from linked issues
        uses: actions/github-script@v7
        with:
          script: |
            const copyLabels = require('./.github/scripts/copy-linked-issue-labels.js');
            await copyLabels({ github, context, core });