TypeScript is a programming language that helps developers turn medium-sized JavaScript projects and prototypes into large-scale ones. JavaScript, a widely-used programming language, was designed to be easy to use for developers and non-developers alike. As a result, JavaScript development is difficult to scale up. Microsoft introduced TypeScript to solve this scalability problem. TypeScript is often referred to as JavaScript with type because it allows developers to find errors while writing their code rather than wait until the application is running. And because TypeScript is a syntactical superset of JavaScript, any JavaScript program is also a valid TypeScript program.

Typescript is a superset of JavaScript. As its name suggests, TypeScript adds optional static typing to the JavaScript language. JavaScript is a scripting language that allows developers to create dynamic web content. It is known for being fairly easy to use and learn. This makes it a popular programming language for small and medium-scale web projects. Developers use TypeScript when they need to scale up their JavaScript development. Its language is more powerful and intuitive, allowing developers to find and correct errors during compile time, rather than only during run-time, as with JavaScript. TypeScript is better suited than JavaScript for large applications, but it requires a foundational knowledge of JavaScript to use.

TypeScript is mainly associated with development careers. Typical job titles for TypeScript developers include senior developer, front end developer, stack developer, and software engineer. Because TypeScript is a superset of JavaScript, learning TypeScript is a great next step for engineers who are already skilled in JavaScript. Programming knowledge is applicable in just about every industry, so developers with an understanding of TypeScript (which implies skill in JavaScript) might work in a wide range of fields building applications for both server-side and client-side execution.