Anabolic Codeowners

CODEOWNERS on steroids. Built for monorepos.

Anabolic Codeowners enhances GitHub’s CODEOWNERS functionality, enabling random assignment of code reviewers with per-path granularity. It’s perfect for monorepos, ensuring balanced review workload distribution.

• Randomly select reviewers from the configured pool to evenly distribute the review load
• Assign reviewers to specific paths or files in your repository, mirroring CODEOWNERS syntax for intuitive setup
• Flexibly set the number of reviewers per pull request to maintain balance between thorough review and efficiency

Create a workflow .yaml under .github/workflows like this:

name: Assign Reviewers

on:
  pull_request:
    types:
      - opened
      - reopened
      - ready_for_review

jobs:
  assign-reviewers:
    runs-on: ubuntu-latest
      steps:
        - name: Checkout code
          uses: actions/checkout@v4

        - name: Anabolic Codeowners
          uses: moltinginstar/anabolic-codeowners@main
          with:
            token: ${{ secrets.GITHUB_TOKEN }}
            config: .github/codeowners.yaml # Configuration file, optional
            num-reviewers: 1 # Reviewers per rule, optional

To use Anabolic Codeowners, you must also create a configuration file and assign users to specific filepaths. By default, this file will be named .github/codeowners.yaml, or you can specify a different location in the workflow manifest. Here’s an example codeowners.yaml for an Nx-based monorepo:

**/*:
  - agile-codehunter
  - atomic-committer

apps/app1-api/**/*:
  - alluring-creator

# Override the default reviewers for a specific file
apps/app1-api/src/app.module.ts:
  - apex-codex

# Exclude specific paths from review
apps/app1-api/src/config/**/*:

apps/app1-api/**/*.(spec|test).ts:
  - agile-codehunter

apps/app1-web/**/*:
  - anomaly-catcher
  - aurora-cascade
  - apex-codex

libs/app1-shared/**/*:
  - agile-codehunter
  - aurora-cascade

The last matching rule for a file overrides previous matches. You can use any path specifier supported by minimatch, including:

• * and **
• Negative (!) patterns
• POSIX character classes (e.g., [[:alpha:]])
• Etc.

Contributions are very welcome! Please submit pull requests or open issues for bugs and feature requests.

Anabolic Codeowners is licensed under the MIT License.