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.

TypeScript is JavaScript with added syntax for types. TypeScript is developed and maintained by Microsoft.

The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

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).

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.

Mar 11, 2026 · 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 …

Apr 10, 2026 · baseUrl will no longer be supported in Typescript 7.0 as explained in this related GitHub post by Daniel Rosenwasser. To fix the error, explicitly include the full path in your paths mappings.

Mar 23, 2026 · While TypeScript 6.0 maintains full compatibility with your existing TypeScript knowledge and continues to be API compatible with TypeScript 5.9, this release introduces a number of …

plain JavaScript. Playground allows you to compile TypeScript and see JavaScript output. Differences from typescriptlang.org/play: – All strict options turned on by default – More available compiler …

TypeScript is a syntactic superset of JavaScript which adds static typing. This basically means that TypeScript adds syntax on top of JavaScript, allowing developers to add types.