TypeScript in 10 Minutes: From JavaScript to Type Safety

You know JavaScript. TypeScript is just JavaScript with types. Here's everything you need to start. Why bother with TypeScript? // JavaScript — no errors until runtime function greet(user) { return `Hello, ${user.nme}`; // typo! "nme" instead of "name" } greet({ name: "Alice" }); // Returns "Hello, undefined" — silent bug! // TypeScript — catches errors at compile time function greet(user: { name: string }): string { return `Hello, ${user.nme}`; // Error: Property 'n