typescriptlang.org
TypeScript
https://www.typescriptlang.org
Documentation
TypeScript stands in an unusual relationship to JavaScript. TypeScript offers all of JavaScript's features, and an additional layer on top of these: TypeScript's type system. For example, JavaScript provides language primitives like string and number, but it doesn't check that you've consistently assigned these. TypeScript does.
Docs
Docs - TypeScript: JavaScript With Syntax For Types.
Playground
Playground - TypeScript: JavaScript With Syntax For Types.
Download
The TypeScript Handbook is intended to be a comprehensive document that explains TypeScript to everyday programmers. You can read the handbook by going from top to bottom in the left-hand navigation. You should expect each chapter or page to provide you with a strong understanding of the given concepts. The TypeScript Handbook is not a complete ...
Community
Community - TypeScript: JavaScript With Syntax For Types.
Tools
A live environment for exploring, learning and sharing TypeScript code. Try different compiler flags, run through extensive code samples to learn specifics about how TypeScript works. TSConfig Reference. An annotated reference to more than a hundred compiler options available in a tsconfig.json or jsconfig.json.