Getting Started with TypeScript

TypeScript adds static types to JavaScript, catching errors earlier and improving IDE experience.

Quick overview

• Types: primitives, interfaces, unions, generics.
• Gradual adoption: rename .js to .ts/.tsx and enable allowJs/isolatedModules.
• Tooling: tsconfig.json, tsc, ESLint + TypeScript plugin.

Migration tips

• Start with strict:false, then enable strict options incrementally.
• Add types to critical modules first (API responses, shared libs).
• Use any sparingly and prefer typed guards.

Example type:

interface User {
  id: string;
  name: string;
}
function greet(u: User) {
  return `Hi ${u.name}`;
}

TypeScript pays off as codebases grow.