TypeScript
TypeScript is a superset of JavaScript created by Microsoft that adds optional static typing—like adding labels to the shapes of data and the contracts of functions. For non-technical readers, this means the tools can detect many mistakes before the software runs, reducing bugs and making large projects easier to understand. TypeScript compiles down to ordinary JavaScript, so it works anywhere JavaScript does (browsers, Node.js, cloud functions). The benefits become more visible as a codebase grows: clear, self-documenting types make it easier for new developers to understand the system, IDEs can auto-complete accurately, and refactoring is safer because the compiler flags mismatches. Most modern front-end frameworks (React, Vue, Angular) and many back-end tools now offer first-class TypeScript support.
Official WebsiteWhen to use TypeScript
Use TypeScript when you expect your web app or service to grow and be maintained by multiple developers over time. It shines in complex user interfaces, shared component libraries, and API clients where the shape of data matters. It's also valuable for back-end services written in Node.js to reduce runtime surprises.
Why choose TypeScript?
Teams choose TypeScript because it reduces defects and speeds up development through better tooling and safer changes. It preserves JavaScript's reach while improving reliability and readability, which lowers long-term maintenance costs.