Introduction to Generics

Generics in TypeScript allow you to create reusable functions and classes that can work with multiple types. Here's an example of how to define a generic function:

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

Using Generics

You can use generics to create reusable classes and interfaces:

class Container<T> {
    private value: T;

constructor(value: T) {
        this.value = value;
    }

getValue(): T {
        return this.value;
    }
}

Introduction to Conditional Types

Conditional types in TypeScript allow you to make decisions based on types at compile-time. Here's an example of how to define a conditional type:

type IsString<T> = T extends string ? true : false;

Using Conditional Types

You can use conditional types to create more expressive and flexible types:

type GetType<T> = T extends string ? string : T extends number ? number : unknown;