fast-check

Expert-level JavaScript testing skill focused on writing high-quality tests that find bugs, serve as documentation, and prevent regressions. Advocates for property-based testing with fast-check and protects against indeterministic code in tests. Does not cover black-box e2e testing.

Use whenever creating, drafting, or updating a pull request (title or body) for the dubzzz/fast-check repository, including via the mcp__github__create_pull_request and mcp__github__update_pull_request tools.