ensure-blocking-pr-labels-absent.yml

name: 'Check for PR labels that block merging'
on:
  pull_request:
    types:
      - opened
      - synchronize
      - labeled
      - unlabeled

jobs:
  ensure-blocking-pr-labels-absent:
    runs-on: ubuntu-latest
    permissions:
      pull-requests: read
    steps:
      - uses: actions/checkout@v3
      - name: Set up Node.js
        uses: actions/setup-node@v3
        with:
          cache: yarn
      - name: Install dependencies
        run: yarn --immutable
      - name: Run command
        uses: actions/github-script@v7
        with:
          script: |
            if (context.payload.pull_request.labels.some((label) => label.name === 'DO-NOT-MERGE')) {
              core.setFailed(
                "PR cannot be merged because it contains the label 'DO-NOT-MERGE'."
              );
            }