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TypeScript Interface

TypeScript interface can define both property and method.

Example​

interface Contact {
    name: string;
    age: number;

    getWorkPhone(): string;

    getHomePhone: () => string;
}

class Person implements Contact {
    name: string;
    age: number;

    constructor(name: string, age: number) {
        this.name = name;
        this.age = age;
    }

    getWorkPhone(): string {
        return '123-456-7890';
    }

    getHomePhone = (): string => {
        return '098-765-4321';
    }
}

References​