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TypeScript

A typed superset of JavaScript that catches errors at development time, making code safer and easier for both humans and AI to work with.

TypeScript is a programming language built on top of JavaScript that adds static type annotations. Instead of discovering that a variable is the wrong type at runtime (causing a crash), TypeScript catches these errors during development, before the code ever runs.

For vibe coders, TypeScript matters because AI writes better TypeScript than JavaScript. Type annotations give the model explicit information about what data structures look like, what functions expect, and what they return. This reduces hallucinated property names, incorrect function signatures, and silent runtime bugs.

The Modern Vibe Coding curriculum uses TypeScript throughout. The ecosystem (Next.js, React, Drizzle, tRPC) has excellent TypeScript support, and the combination of strong types + AI code generation produces more reliable software with less manual debugging.

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