semver-on-release-labeled-pr.yml

name: Check Semver for Pull Request
on:
  pull_request:
    branches: [master]
    types: [labeled, unlabeled, opened, synchronize]
jobs:
  verify-version:
    if: contains(github.event.pull_request.labels.*.name, 'release')
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Get Pull Request Version
        id: pr-version
        run: echo "version=$(jq -r .version package.json)" >> $GITHUB_OUTPUT
      - uses: actions/checkout@v3
        with:
          ref: master
      - name: Get Base Version
        id: base-version
        run: echo "version=$(jq -r .version package.json)" >> $GITHUB_OUTPUT
      - uses: actions/setup-node@v3
        with:
          node-version: 16
      - run: yarn add semver
      - uses: actions/github-script@v6
        env:
          PR_VERSION: ${{steps.pr-version.outputs.version}}
          BASE_VERSION: ${{steps.base-version.outputs.version}}
        with:
          script: |
            const semver = require("semver")
            const { PR_VERSION: pr, BASE_VERSION: base } = process.env
            const pr_is_greater = semver.gt(pr, base)
            if (pr_is_greater) {
              core.debug(`Success, the pr version (${pr}) is higher than the base version (${base}).`)
            } else {
              core.setFailed(`The pr version (${pr}) is not greater than the base version (${base}). A pull request labeled with 'release' must have a valid version bump.`)
            }