dependabot-pr-merge.yml

# Workflow to automatically merge dependabot PRs
# if they are for a minor or patch update to a dependent pacakge

name: Dependabot reviewer
on: pull_request_target

permissions:
  pull-requests: write
  contents: write

jobs:
  review-dependabot-pr:
    runs-on: ubuntu-latest
    if: ${{ github.actor == 'dependabot[bot]' }}
    steps:
      - name: Dependabot metadata
        id: metadata
        uses: dependabot/fetch-metadata@v2
        with:
          github-token: "${{ secrets.GITHUB_TOKEN }}"
      - name: Enable auto-merge for Dependabot PRs
        run: gh pr merge --auto --merge "$PR_URL"
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      - name: Approve minor or patch dependency updates
        if: ${{steps.metadata.outputs.update-type == 'version-update:semver-patch' || steps.metadata.outputs.update-type == 'version-update:semver-minor'}}
        run: gh pr review $PR_URL --approve
        env:
          PR_URL: ${{github.event.pull_request.html_url}}
          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
# A comprehensive example to assess major/minor/patch version changes to development & non-development dependencies can be found here:
# https://nicolasiensen.github.io/2022-07-23-automating-dependency-updates-with-dependabot-github-auto-merge-and-github-actions/