Modules

Summary

How TypeScript organizes and type-checks code split across multiple files, extending JavaScript's `import`/`export` with type-only imports and declaration files.

How to Learn This

1Practice `import type` for importing only type information.
2Learn what a `.d.ts` declaration file is and when you'd write one.
3Explore how `tsconfig.json`'s `module` setting affects compiled output.

Mapped Types

Advanced Types

More topics in TypeScript

Types Interfaces Enums Generics Union Intersection Utility Types Type Guards Mapped Types Advanced Types React + TS

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