Top 20 TypeScript Interview Questions You Must Know in 2025

Preparing for a tech interview? Don’t overlook TypeScript—a powerful superset of JavaScript widely used in modern development. Whether you're a fresher or an experienced developer, mastering key TypeScript interview questions can give you a strong edge. From type annotations and interfaces to generics and advanced type features, interviewers often test your understanding of real-world TypeScript applications. This guide covers the most commonly asked TypeScript interview questions, helping you confidently tackle both theoretical and practical challenges. If you're aiming to stand out in your next interview, start here and sharpen your TypeScript fundamentals and advanced concepts today!