TypeScript is a statically typed, open-source programming language developed and maintained by Microsoft. It was created as a superset of JavaScript to enable the development of large-scale applications with a more predictable type system. TypeScript supports compilation to JavaScript and can be used in browsers, Node.js, Apache Cordova, and Microsoft Azure. TypeScript features include type annotations, which enable developers to specify the types of data values and variables. This helps to prevent errors and improves code readability. It supports classes that are for object-oriented programming, including inheritance, interfaces, and abstract classes. Additionally, it supports enums, an enumerated type that enables you to create a set of named constants. Also included is support for generics, allowing you to create reusable types that can be parameterized by the type of data they store. Finally, it affords you the ability to support modules, which allows you to group related code into self-contained units.

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