how to specify a array of objet in typescript code example

Example 1: typescript array of objects

interface User {
	[index: number]: {
    	firstname: string;
      	lastname: string;
      	age: number;
    }
}

Example 2: typescript array of objects

// Create an interface that describes your object
interface Car {
  name: string;
  brand: string;
  price: number;
}

// The variable `cars` below has a type of an array of car objects.
let cars: Car[];