Typescript

A superset of javascript that compiles to javascript, and includes compile-time type-checking.
it's runtime behaviour remains untyped.
The strictness of type-checks is configurable.

Documentation

official docs	https://www.typescriptlang.org/docs/
homepage	https://www.typescriptlang.org/

Intro/Reference

typescript install

Libraries

typescript libraries

Syntax

typescript variables

typescript datatypes

typescript modules

typescript objects

typescript interfaces

typescript classes

typescript functions

Tools

typescript compilers