TypeScript

Master TypeScript primitive types

Work with typed arrays and tuples

Define object shapes with interfaces

Add types to function parameters and returns

Use union types and literal values

Create reusable type definitions

Define sets of named constants

Create reusable, type-safe functions

Create flexible interface definitions

Add TypeScript to classes

Extend classes with proper typing

Use interfaces with classes

Tell TypeScript about types you know

Use built-in utility types

Select or exclude properties from types

Create mapped and immutable types

Narrow types with runtime checks

Pattern match with tagged unions

Transform types programmatically

Types that depend on conditions

Create types from string templates

Define dynamic property types

Metaprogramming with decorators

Organize code with modules

Work with .d.ts files

Constrain generic types

Extract types from other types

Type React components and hooks

Build a fully typed API client