TypeScriptis very essential to write code in Angular 4 and other higher versions. In this Article, you can understand about TypeScript. To know more about Angular 4, Please visit our main website - Angular Latest Topics . What is TypeScript? · TypeScript is Strongly Typed Language which means you have to be specific with Variable type. · TypeScript is a wrapper around the JavaScript. · TypeScript doesn’t run in the browser. We need to compile it to JS to run. · TypeScript is a typed superset of JavaScript and pure Object-oriented. Features of TypeScript: · Due to the static typing, code written in TypeScript is more predictable and is generally easier to debug. · Makes it easier to organize the code base for very large and complicated apps with the help of modules, namespaces and strong OOP support. · You can use TypeScript for other JS libraries Because TS compiles plain JS. · TS is