comparison2 min read

TypeScript vs JavaScript

Compare TypeScript and JavaScript: type safety, tooling, learning curve, and when to use each.

JavaScript is the universal language of the web — every browser runs it natively. TypeScript is JavaScript with static type annotations that catch errors before your code runs. TypeScript compiles to JavaScript, so anything JavaScript can do, TypeScript can do. The tradeoff: TypeScript adds a compilation step and requires type annotations, but catches entire categories of bugs (typos, wrong argument types, null reference errors) at development time. For solo projects and scripts, JavaScript is faster to write. For team projects, libraries, and anything that will be maintained long-term, TypeScript saves time by preventing bugs.