Type Script introduced Microsoft which is Super Set for JavaScript that compiles into plain JavaScript. Type Script do work on providing useful tools for large scale applications by implementing features likes classes, type annotations, inheritance, modules. Type Script offers classes, modules, and interfaces to help you build robust components. These features are used at development time for high-confidence application development which are compiled into simple JavaScript. Type Script types let you define interfaces between software components and to gain insight into the behavior of existing JavaScript libraries.