What are TypeScript interfaces and how do I use them?

What are TypeScript interfaces and how do I use them?

TypeScript interfaces are a way to define the structure of an object. They allow you to specify the types of properties an object should have.

Can you give me an example of a TypeScript interface?

Sure! Here's a simple example:

interface Person {
    name: string;
    age: number;
}

This defines a Person interface with name and age properties.

How do I implement this interface in a class?

You can implement an interface in a class like this:

class Employee implements Person {
    name: string;
    age: number;
    constructor(name: string, age: number) {
        this.name = name;
        this.age = age;
    }
}

What happens if I don't implement all properties of the interface?

If you don't implement all properties, TypeScript will give you a compilation error, ensuring that your class adheres to the interface.