Interfaces Typescript

• An interface is a syntactical contract that defines the structure of an object.
• It specifies what properties & methods an object should have without providing the implementation details.
• Interfaces can be used to enforce type-checking & ensure that objects adhere to a specific shape, promoting code consistency and maintainability.

Key points:

• Shape Definition: Defines properties & methods.
• Type Checking: Ensures objects conform to specified structure.
• Extensibility: Supports inheritance, allowing one interface to extend another.
• Implementation: Classes can implement interfaces to ensure they follow the defined contract.

Example

interface Person {
	name: string;
	age: number;
	greet(): void;
}

class Employee implements Person {
	constructor(public name: string, public age: number) {}
	greet() {
		console.log(`Hello, my name is ${this.name}`);
	}
}