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Pull Request Labeler

Basic validation

Automatically label new pull requests based on the paths of files being changed.


Create .github/labeler.yml

Create a .github/labeler.yml file with a list of labels and minimatch globs to match to apply the label.

The key is the name of the label in your repository that you want to add (eg: "merge conflict", "needs-updating") and the value is the path (glob) of the changed files (eg: src/**, tests/*.spec.js) or a match object.

Match Object

For more control over matching, you can provide a match object instead of a simple path glob. The match object is defined as:

- any: ['list', 'of', 'globs']
  all: ['list', 'of', 'globs']

One or both fields can be provided for fine-grained matching. Unlike the top-level list, the list of path globs provided to any and all must ALL match against a path for the label to be applied.

The fields are defined as follows:

  • any: match ALL globs against ANY changed path
  • all: match ALL globs against ALL changed paths

A simple path glob is the equivalent to any: ['glob']. More specifically, the following two configurations are equivalent:

- example1/*


- any: ['example1/*']

From a boolean logic perspective, top-level match objects are OR-ed together and individual match rules within an object are AND-ed. Combined with ! negation, you can write complex matching rules.

Basic Examples

# Add 'label1' to any changes within 'example' folder or any subfolders
- example/**

# Add 'label2' to any file changes within 'example2' folder
label2: example2/*

# Add label3 to any change to .txt files within the entire repository. Quotation marks are required for the leading asterisk
- '**/*.txt'

Common Examples

# Add 'repo' label to any root file changes
- '*'

# Add '@domain/core' label to any change within the 'core' package
- package/core/**

# Add 'test' label to any change to *.spec.js files within the source dir
- src/**/*.spec.js

# Add 'source' label to any change to src files within the source dir EXCEPT for the docs sub-folder
- any: ['src/**', '!src/docs/*']

# Add 'frontend` label to any change to *.js files as long as the `main.js` hasn't changed
- any: ['src/**/*.js']
  all: ['!src/main.js']

Create Workflow

Create a workflow (eg: .github/workflows/labeler.yml see Creating a Workflow file) to utilize the labeler action with content:

name: "Pull Request Labeler"
- pull_request_target

      contents: read
      pull-requests: write
    runs-on: ubuntu-latest
    - uses: actions/[email protected]


Various inputs are defined in action.yml to let you configure the labeler:

Name Description Default
repo-token Token to use to authorize label changes. Typically the GITHUB_TOKEN secret, with contents:read and pull-requests:write access github.token
configuration-path The path to the label configuration file .github/labeler.yml
sync-labels Whether or not to remove labels when matching files are reverted or no longer changed by the PR false


Contributions are welcome! See the Contributor's Guide.