JavaScript engineering

Use this skill for JavaScript implementation, refactoring, debugging, and code review. Optimize for code that is clear, idiomatic, observable, and easy to change—not for maximum ceremony.

Operating procedure

1. Inspect the repository and the nearest code that solves the same problem.
2. Choose the existing convention; if none exists, apply the defaults in this skill consistently.
3. Implement the smallest complete change. Do not broaden the task with cleanup, package migrations, or speculative abstractions.
4. Verify behavior at runtime as well as with tests, linting, or typechecking when those checks exist.
5. Before finishing, review the change against the red flags below and report the checks that ran.

Agent reliability contract