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TypeScript is a superset of JavaScript that adds extra features like static typing, interfaces, enums, and more. It offers classes, modules, and interfaces to help you build robust components. The compiler can target all ECMAScript versions 5 and above, transpiling modern features like classes and arrow functions to their older counterparts. TypeScript classes were based on the then-proposed ECMAScript 6 class specification to make writing prototypal inheritance less verbose and error-prone, and type annotations enabled IntelliSense and improved tooling.<\/p>\n<\/p>\n
On 22 September 2016, TypeScript 2.0 was released, introducing several features, including the ability for programmers to optionally enforce null safety. Further improvement were made in July 2014, when the development team announced a new TypeScript compiler, asserted to have a five-fold performance increase. TypeScript (TS) is a high-level programming language that adds static typing with optional type annotations to JavaScript.<\/p>\n<\/p>\n