TypeScript

TypeScript is an open source programming language developed and maintained by Microsoft. It is a strict superset of JavaScript, and adds static typing and class-based object-oriented programming to the language.

TypeScript is designed for the development of large applications and transcompiles to JavaScript. As TypeScript is a superset of JavaScript, any existing JavaScript program is also a TypeScript program.

TypeScript is emitted as JavaScript. The TypeScript compiler is written in TypeScript and transcompiles .ts files to .js files. The TypeScript standard library is also written in TypeScript and is distributed as a .d.ts file.

TypeScript may be used to develop JavaScript applications for both client-side and server-side execution. TypeScript is also used by a number of popular frameworks such as Angular and React.

TypeScript is an open source project hosted on GitHub.

Microsoft developed TypeScript and released it under the Apache license in October 2012.TypeScript is a typed superset of JavaScript that compiles to plain JavaScript.

TypeScript is a free and open source programming language developed and maintained by Microsoft. It is a strict superset of JavaScript, and adds static typing and class-based object-oriented programming to the language.