What is TypeScript and Why Use It?

Let’s start with the obvious: JavaScript is everywhere, and it’s powerful. But it’s also error-prone, hard to scale, and too permissive for its good. This is where TypeScript comes in.

TypeScript is a typed superset of JavaScript that compiles down to plain JavaScript. That means every JS file is already a valid TS file (syntactically). It layers a powerful, statically typed system on top of the language we already use every day. It’s designed to help us write safer code, catch bugs earlier, and build better tools and workflows.