github-codeowners

A CLI tool for working with GitHub CODEOWNERS.

Things it does:

• Calculate ownership stats
• Find out who owns each and every file (ignoring files listed in .gitignore)
• Find out who owns a single file
• Find out who owns your staged files
• Outputs in a bunch of script friendly handy formats for integrations (CSV and JSONL)
• Validates that your CODEOWNERS file is valid

Installation

Install via npm globally then run

$ npm i -g github-codeowners
$ github-codeowners --help Usage: github-codeowners [options] [command]

Commands

Audit

Compares every file in your current (or specified) directory against your CODEOWNERS rules and outputs the result of who owns each file.

$ cd<your awesome project> $ github-codeowners audit
README.md
package.json
src/cli.ts @jjmschofield
...

Ownership stats:

$ github-codeowners audit -s
--- Counts ---
Total: 24 files (1378 lines)
Loved: 10 files (494 lines)
Unloved: 14 files (884 lines)
--- Owners ---
@jjmschofield: 10 files (494 lines)

Only files in a specific directory:

$ github-codeowners audit -r src/
src/cli.ts @jjmschofield
src/commands/audit.ts @jjmschofield
...

Only unowned files:

$ github-codeowners audit -u
.github/CODEOWNERS
.gitignore

Output in JSONL:

$ github-codeowners audit -o jsonl
{"path":"src/commands/audit.ts","owners":["@jjmschofield"],"lines":48}
...

Output in CSV:

$ github-codeowners audit -o csv
src/commands/audit.ts,@jjmschofield

Full usage information:

$ github-codeowners audit --help
Usage: github-codeowners audit [options]
list the owners for all files
Options:
-d, --dir <dirPath> path to VCS directory (default: "<current working directory>")
-c, --codeowners <filePath> path to codeowners file (default: "<dir>/.github/CODEOWNERS")
-o, --output <outputFormat> how to output format eg: simple, jsonl, csv (default: "simple")
-u, --unloved unowned files only (default: false)
-g, --only-git consider only files tracked by git (default: false)
-s, --stats output stats (default: true)
-r, --root <rootPath> the root path to filter files by (default: "")
-h, --help output usage information

Who

Tells you who owns a given file or files:

$ cd<your awesome project> $ github-codeowners who <file><file><file> @some/team
<file> @some/team

Full usage:

$ github-codeowners who --help Usage: github-codeowners who [options] <file...>
lists owners of a specific file or files
Options:
-d, --dir <dirPath> path to VCS directory (default: "/Users/jjmschofield/projects/github/snyk/registry")
-c, --codeowners <filePath> path to codeowners file (default: "<dir>/.github/CODEOWNERS")
-o, --output <outputFormat> how to output format eg: simple, jsonl, csv (default: "simple")
-h, --help output usage information

Git

Provides a list of files with their owners between commits (against the current version of CODEOWNERS).

Ownership of all files staged for commit:

$ cd<your awesome project>
$ github-codeowners git

Ownership of files existing at a specific commit:

$ github-codeowners git <commit sha>

Ownership of files changed between two commits:

$ github-codeowners git <commit sha><commit sha>

Output stats:

$ github-codeowners git -s

Full usage:

$ github-codeowners git --help Usage: github-codeowners git [options] [shaA] [shaB]
lists owners of files changed between commits, a commit against head or staged against head.
Options:
-d, --dir <dirPath> path to VCS directory (default: "/Users/jjmschofield/projects/github/snyk/registry")
-c, --codeowners <filePath> path to codeowners file (default: "<dir>/.github/CODEOWNERS")
-o, --output <outputFormat> how to output format eg: simple, jsonl, csv (default: "simple")
-s, --stats output stats, note line counts are not available for this command (default: false)
-h, --help output usage information

Validate

Validates your CODEOWNERS file to find common mistakes, will throw on errors (such as malformed owners).

$ cd<your awesome project> $ github-codeowners validate
Found duplicate rules [ 'some/duplicate/rule @octocat' ]
Found rules which did not match any files [ 'some/non-existent/path @octocat' ]
...

Full usage information:

$ github-codeowners validate --help
Usage: github-codeowners validate [options]
Validates a CODOWNER file and files in dir
Options:
-d, --dir <dirPath> path to VCS directory (default: "<current working directory>")
-c, --codeowners <filePath> path to codeowners file (default: "<dir>/.github/CODEOWNERS")
-r, --root <rootPath> the root path to filter files by (default: "")
-h, --help output usage information

Output Formats

Check github-codeowners <command> --help for support for a given command, however generally the following outputs are supported:

• simple - tab delimited - terminal friendly output
• jsonl - line separated json - useful for streaming data to another command
• csv - csv delimited fields - useful to import into a spreadsheet tool of your choice

Limits and Things to Improve

• It requires node
• It is not optimized
• The output interface might change
• Command syntax might change

Shout outs

Inspired by codeowners but implemented in Typescript with extra bells and whistles.