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Echo With Coffee — Top 30 TypeScript Interview Questions with Answers & Examples Get interview-ready with the essential TypeScript concepts every developer should know. In this deep-dive video, we walk through the Top 30 TypeScript interview questions with clear answers and practical code examples to help you understand and explain each concept confidently. What you’ll learn: Core TypeScript concepts: types, interfaces, unions, intersections, generics, mapped types Advanced patterns: conditional types, declaration merging, ambient declarations Practical usage: function overloads, type guards, readonly/const assertions, tuples Tooling & workflow: tsconfig options, declaration files, migrating JS → TS, testing typings Best practices and interview-ready takeaways