TypeScript

TypeScript extends JavaScript by adding a robust type system that catches errors during development rather than at runtime. By introducing static typing, interfaces, and advanced language features, it transforms JavaScript into a more predictable and maintainable language while preserving full compatibility with existing JavaScript code and libraries.

The compiler analyzes your code for type errors, null references, and logical inconsistencies before execution, dramatically reducing bugs in production. IntelliSense support in modern editors provides autocomplete, inline documentation, and refactoring capabilities that make large codebases manageable and team collaboration seamless.

What sets TypeScript apart is its gradual adoption path—you can introduce types incrementally into existing JavaScript projects without rewriting everything. The compiler outputs clean, readable JavaScript that runs anywhere JavaScript runs, from browsers to Node.js servers, with configurable target versions from ES3 to the latest ECMAScript standards.

Backed by Microsoft and adopted by major frameworks like Angular, Vue, and React, TypeScript has become the industry standard for building scalable web applications. Its rich ecosystem includes type definitions for thousands of JavaScript libraries through DefinitelyTyped, ensuring type safety across your entire dependency tree.