TypeScript extends JavaScript by adding types to the language. TypeScript speeds up your development experience by catching errors and providing fixes before you even run your code.

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.

Jul 23, 2025 · TypeScript is a strongly typed, object-oriented, compiled programming language developed and maintained by Microsoft. It is a superset of JavaScript, adding static types and …

TypeScript ignores spaces, tabs, and newlines that appear in programs. You can use spaces, tabs, and newlines freely in your program and you are free to format and indent your programs …

Aug 8, 2024 · We talked about the basic syntax of TypeScript, such as variables, functions, and classes. You also learned about TypeScript's built-in types, such as numbers, strings, and …

Learn how to write declaration files to describe existing 𝖩𝖺𝗏𝖺𝖲𝖼𝗋𝗂𝗉𝗍𝗌. Important for DefinitelyTyped contributions. How to use 𝖳𝗒𝗉𝖾𝖲𝖼𝗋𝗂𝗉𝗍𝗌-powered 𝖩𝖺𝗏𝖺𝖲𝖼𝗋𝗂𝗉𝗍𝗌 tooling. Compiler configuration reference. Find TypeScript …

TypeScript (TS) is a high-level programming language that adds static typing with optional type annotations to JavaScript. It is designed for developing large applications. It transpiles to …

Sep 4, 2025 · The TypeScript Cheat Sheet is a quick reference guide to all the essential TypeScript concepts, features, and syntax. It's perfect for looking up quick code snippets or …

TypeScript is a strongly typed superset of JavaScript that compiles to plain JavaScript. It adds static types, interfaces, and object-oriented programming features that help catch errors early …

As you start your TypeScript journey, it's essential to understand its syntax and features. In this comprehensive guide, we'll delve into the basics of TypeScript, covering data types, variables, …