TypeScript is JavaScript with syntax for types. TypeScript is a strongly typed programming language that builds on JavaScript, giving you better tooling at any scale.

The TypeScript compiler, named tsc, is written in TypeScript. As a result, it can be compiled into regular JavaScript and can then be executed in any JavaScript engine (e.g. a browser).

Examples in Each Chapter Our "Try it Yourself" editor makes it easy to learn TypeScript. You can edit TypeScript code and view the result in your browser.

TypeScript is a language for application-scale JavaScript. TypeScript adds optional types to JavaScript that support tools for large-scale JavaScript applications for any browser, for any host, on any OS.

Sep 4, 2025 · TypeScript is a superset of JavaScript that adds extra features like static typing, interfaces, enums, and more. Essentially, TypeScript is JavaScript with additional syntax for defining …

🎉 Latest Release TypeScript 5.8 is now available. Explore what's new in the latest version of TypeScript!

This TypeScript tutorial helps you master TypeScript. You'll learn the ins and outs of TypeScript programming.