TypeScript

Basic Annotations

• Primitive Types
• Arrays
• Inline Type Annotation

Type System

• Ambient Declarations
• Interfaces
• Enums
• lib.d.ts
• Functions
• Callable
• Type Assertion
• Type Guard
• Literal Types
• Readonly
• Generics
• Intersection Type
• Tuple Type
• TypeScript Type Alias
• Never Type
• Index Signatures
• Classes

Unions

• Union Type
• Discriminated Union

Related pages

• JavaScript

Books

• TypeScript Deep Dive
• Style Guide

Changes

• TypeScript 4.0