TypeScript

What is TypeScript?

TypeScript is a strongly typed programming language that builds on JavaScript. It adds static type definitions, enabling better tooling, error detection, and code documentation.

Getting Started

• Official TypeScript Docs - The definitive guide
• TypeScript Playground - Try TypeScript in your browser
• Type Challenges - Practice TypeScript skills

Core Concepts

• Basic Types: string, number, boolean, array, tuple, enum
• Interfaces & Types: Defining object shapes and contracts
• Generics: Reusable, type-safe components
• Union & Intersection Types: Combining types flexibly
• Type Guards: Narrowing types at runtime
• Utility Types: Partial, Pick, Omit, Record, and more

Why TypeScript?

• Catch errors early: Type checking before runtime
• Better IDE support: Autocomplete, refactoring, navigation
• Self-documenting code: Types serve as inline documentation
• Easier refactoring: Compiler catches breaking changes
• Team collaboration: Clear interfaces and contracts

Learning Resources

• Total TypeScript - Matt Pocock's comprehensive course
• Execute Program - Interactive TypeScript course
• Learn TypeScript - Free online tutorial

TypeScript in Practice

• React: Type-safe components and hooks
• Node.js: Backend development with types
• Libraries: Most major libraries have TypeScript support
• Configuration: tsconfig.json for project setup