typescript-pro

Enable strict compiler flags in tsconfig.json, including strict null checks and no implicit any, then model critical surfaces with explicit interfaces. Combine this with linting rules and typed tests to catch unsafe code at build time.

Generics parameterize functions and classes so types flow through without repetition, while conditional types select types based on constraints. Use mapped and utility types to transform existing interfaces instead of duplicating definitions.

Yes, the guidance covers integration with React, Node.js, and Express, including typed props, typed API contracts, and typed error boundaries. It also supports both strict and gradual typing strategies for incremental adoption.

Avoid it when the project is plain JavaScript with no TypeScript build pipeline, or when the task is UI/UX design rather than type design. Over-engineering types in small scripts can also slow development without safety benefits.

Strict checks and complex generic inference increase compiler workload on large codebases. Use incremental compilation, project references, and simplified type expressions to reduce build times while keeping safety.