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GitHub action for running prettier on your projects pull requests

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GitHub Prettier Action

CodeFactor code style: prettier License MIT Latest Release Contributors Issues

A GitHub action for styling files with prettier.

Usage

Parameters

Parameter Required Default Description
dry false Runs the action in dry mode. Files wont get changed and the action fails if there are unprettified files. Recommended to use with prettier_options --check
prettier_version false Specific prettier version (by default use latest)
working_directory false Specify a directory to cd into before installing prettier and running it, use relative file path to the repository root for example app/
prettier_options "--write **/*.js" Prettier options (by default it applies to the whole repository)
commit_options - Custom git commit options
push_options - Custom git push options
same_commit false Update the current commit instead of creating a new one, created by Joren Broekema, this command works only with the checkout action set to fetch depth '0' (see example 2)
commit_message "Prettified Code!" Custom git commit message, will be ignored if used with same_commit
commit_description - Custom git extended commit message, will be ignored if used with same_commit
file_pattern * Custom git add file pattern, can't be used with only_changed!
prettier_plugins - Install Prettier plugins, i.e. "@prettier/plugin-php" "@prettier/plugin-other". Must be wrapped in quotes since @ is a reserved character in YAML.
clean_node_folder true Delete the node_modules folder before committing
only_changed false Only prettify changed files, can't be used with file_pattern! This command works only with the checkout action set to fetch depth '0' (see example 2)
github_token ${{ github.token }} The default GITHUB_TOKEN or a Personal Access Token

Note: using the same_commit option may lead to problems if other actions are relying on the commit being the same before and after the prettier action has ran. Keep this in mind.

Example Config

Hint: if you still use the old naming convention or generally a different branch name, please replace the main in the following configurations.

Example 1 (run on push in branch main)

name: Continuous Integration

# This action works with pull requests and pushes
on:
  pull_request:
  push:
    branches:
      - main

jobs:
  prettier:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          # Make sure the actual branch is checked out when running on pull requests
          ref: ${{ github.head_ref }}

      - name: Prettify code
        uses: creyD/[email protected]
        with:
          # This part is also where you can pass other options, for example:
          prettier_options: --write **/*.{js,md}

Example 2 (using the only_changed or same_commit option on PR)

name: Continuous Integration

on:
  pull_request:
    branches: [main]

jobs:
  prettier:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          # Make sure the actual branch is checked out when running on pull requests
          ref: ${{ github.head_ref }}
          # This is important to fetch the changes to the previous commit
          fetch-depth: 0

      - name: Prettify code
        uses: creyD/[email protected]
        with:
          # This part is also where you can pass other options, for example:
          prettier_options: --write **/*.{js,md}
          only_changed: True

Example 3 (using a custom access token on PR)

name: Continuous Integration

on:
  pull_request:
    branches: [main]

jobs:
  prettier:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          ref: ${{ github.head_ref }}
          # Make sure the value of GITHUB_TOKEN will not be persisted in repo's config
          persist-credentials: false

      - name: Prettify code
        uses: creyD/[email protected]
        with:
          prettier_options: --write **/*.{js,md}
          only_changed: True
          # Set your custom token
          github_token: ${{ secrets.PERSONAL_GITHUB_TOKEN }}

Example 4 (dry run)

name: Continuous Integration

on:
  pull_request:
    branches: [main]

jobs:
  prettier:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          ref: ${{ github.head_ref }}
          # Make sure the value of GITHUB_TOKEN will not be persisted in repo's config
          persist-credentials: false

      - name: Prettify code
        uses: creyD/[email protected]
        with:
          dry: True
          github_token: ${{ secrets.PERSONAL_GITHUB_TOKEN }}

More documentation for writing a workflow can be found here.

Issues

Please report all bugs and feature request using the GitHub issues function. Thanks!

Problem with NPM v9 (19.02.2023)

This issue was discussed in creyD#113. The action until release 4 uses the npm bin command, which apparently doesn't work on npm v9. A fix is introduced with v4.3 of this action. If you need an older version of the action working it works until v3.3 and between v3.3 and v4.2 you could use the workaround described in creyD#113 by adding the below to your workflow file:

- name: Install npm v8
  run: npm i -g npm@8

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GitHub action for running prettier on your projects pull requests

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