Run prettier or php-cs-fixer with GitHub Actions

Stefan Zweifel shares his GitHub Actions Workflows to run prettier and php-cs-fixer on his repos:

Over the past few weeks I’ve added a handful of workflows to my projects.

One workflow is really like, is to run prettier and php-cs-fixer to automatically format my code and commit the fixed files back to the repository.

Here’s the contents of the prettier workflow for example (.github/workflows/format_prettier):

name: Format (prettier)

on:
  pull_request:
    paths:
    - '**.css'
    - '**.js'
    - '**.vue'

jobs:
  prettier:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1

    - name: Install
      run: yarn install
      env:
        CI: true

    - name: Run prettier
      run: yarn run prettier --write 'src/**/*.{css,js,vue}'

    - uses: stefanzweifel/git-auto-commit-action@v2.1.0
      with:
        commit_message: Apply prettier changes
        branch: ${{ github.head_ref }}
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Upon each PR the workflow spins up an ubuntu machine which:

1. Checks out the code
2. Installs the dependencies (given that prettier is listed as a dev dependency in package.json)
3. Runs the linter on certain files, with autofix enabled
4. Commits all changes made by the linter

The php-cs-fixer works in a similar way.

Run prettier or php-cs-fixer with GitHub Actions →