CODEOWNERS Generator & Tester

Build a GitHub-style CODEOWNERS file rule by rule, then probe any file path to see which rule (and which owners) GitHub would route a review to. Validates patterns, owner syntax, and the last-match-wins ordering trap.

📋 Rules

Pattern

Owners (space-separated)

Section

rules: 0 unique owners: 0 sections: 1

📄 Output

✅ Lint

emptyAdd a rule to start.

🎯 Test a file path

File path (relative to repo root)

Or paste many paths, one per line

CODEOWNERS syntax cheat sheet

Last matching rule wins. GitHub walks the file top-to-bottom and the last non-overridden pattern that matches the changed file decides the owners. Earlier rules are silently shadowed when a later one matches the same path.

* — anything in this directory and below
*.js — any .js file at any depth
/build/ — only the top-level build/ directory
docs/* — files directly inside docs/ (no recursion)
apps/**/*.tsx — any TSX file under apps/ at any depth
Owners are @username, @org/team, or user@example.com
Lines starting with # are comments
[Section Name] = required reviewers; ^[Optional Section] = optional