Understanding TypeScript Generics

What Are Generics?

Generics allow you to write reusable code that works with multiple types while maintaining type safety.

A Simple Example

function identity<T>(arg: T): T {
  return arg;
}

const result = identity<string>("hello");

Real-World Use

Generics are everywhere in TypeScript — from Array<T> to Promise<T>. Understanding them is key to writing effective TypeScript code.

Conclusion

Generics are one of TypeScript’s most powerful features.