This repository contains a detailed specification of TypeScript syntax and runtime semantics, which is not an official specification but is based on the major TypeScript parsers in the wild. It serves ...

For full support of all of TypeScript's syntax and features, including using any version of TypeScript, use a third-party package. For lightweight support, you can use the built-in support for type ...

are listed in this order. You can read from top to bottom, but it is intended for you to jump to the necessary sections from the table of contents. This does not affect how you write code, but the ...

If you need to create a version of a class from several sources or just want to merge default values with a user's input, object spreading solves your problem. JavaScript won't let you do this (yet) ...

Say goodbye to source maps and compilation delays. By treating types as whitespace, modern runtimes are unlocking a “no-build” TypeScript that keeps stack traces accurate and workflows clean.

TypeScript 5.5, the latest version of Microsoft’s strongly typed JavaScript variant, has been officially released. The update brings improvements ranging from performance and size optimizations to ...

There are lots of enhancements waiting for you in TypeScript 1.8, including features that make it easier to move your project to TypeScript, that protect you from errors and that give you even better ...