Native TypeScript Support

One of Bun's standout features is native TypeScript support. You can run .ts files directly without any configuration or build step.

Running TypeScript Directly

In Bun, TypeScript just works:

Interfaces and Types

Define and use TypeScript interfaces:

Type Aliases and Union Types

Generic Types

Use generics for reusable, type-safe code:

Async TypeScript

TypeScript with async/await:

Exercise: Type-Safe Function

Create a type-safe function to validate user input:

Exercise: Generic Array Utility

Create a generic function to get the last element of an array:

Exercise: Interface Implementation

Create an interface and a function that uses it: