howto-code-in-typescript

Use when writing tests for serialization, validation, normalization, or pure functions - provides property catalog, pattern detection, and library reference…

Use when writing or modifying React components, planning React features, or working with .jsx/.tsx files - provides modern React patterns with TypeScript…

Use when writing or reviewing tests - covers test philosophy, condition-based waiting, mocking strategy, and test isolation

Use when writing or refactoring code.

Use when invalid data causes failures deep in execution - validates at every layer data passes through to make bugs structurally impossible rather than…

Use when writing, reviewing, or modifying Go code - covers naming, error handling and wrapping, doc comments, declarations and scope, API and interface…

Use when writing, reviewing, or modifying Python code - covers the Ruff/Mypy/uv toolchain, naming, type annotations, idioms and comprehensions, errors and…

Use when writing, reviewing, or modifying Rust code - covers error handling with thiserror+miette, type system patterns, async and serde conventions, testing…

Use when writing database access code, creating schemas, or managing transactions with PostgreSQL - enforces transaction safety with TX_ naming, read-write…

Use when committing changes, splitting work into commits, or writing commit messages - covers atomic commits, bisect-able history, separating concerns, and…

Use every time you write or edit code comments, or perform code review