pr-title.yml

name: Check PR title
on:
  pull_request:
    types:
      - opened
      - reopened
      - edited
      - synchronize

permissions:
  pull-requests: read
  issues: read

jobs:
  lint:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: Cache node modules
        id: cache-npm
        uses: actions/cache@v4
        env:
          cache-name: cache-node-modules
        with:
          # npm cache files are stored in `~/.npm` on Linux/macOS
          path: ~/.npm
          key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('**/package-lock.json') }}
          restore-keys: |
            ${{ runner.os }}-build-${{ env.cache-name }}-
            ${{ runner.os }}-build-
            ${{ runner.os }}-

      - name: Check if PR title follows conventional commit guidelines
        env:
          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
          PR_TITLE: ${{ github.event.pull_request.title }}
        run: |
          npm i -g @commitlint/cli@17.0.2 @commitlint/config-conventional@17.0.2
          echo "$PR_TITLE" | commitlint