TypeScript

Overview

TypeScript is a statically typed superset of JavaScript that compiles to plain JavaScript. It adds optional type annotations, interfaces, generics, and advanced type-level programming to JavaScript, enabling safer refactoring, better tooling, and self-documenting code. TypeScript has become the default choice for professional JavaScript development across frontend frameworks, backend services, CLIs, and serverless functions.

Knowledge Map

typescript/
├── project-system/       # tsconfig.json, build tools, bundlers, compilation
├── package-management/   # npm, yarn, pnpm, bun, workspaces, publishing
├── cli/                  # Commander, yargs, oclif, ink, chalk, CLI tooling
└── packages/             # Popular libraries (Express, Next.js, Zod, Prisma, etc.)

Choosing Guide

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