type of object of arrays in typescript code example

Example 1: array of objects typescript

let userTestStatus: { id: number, name: string }[] = [
    { "id": 0, "name": "Available" },
    { "id": 1, "name": "Ready" },
    { "id": 2, "name": "Started" }
];

userTestStatus[34978].nammme; // Error: Property 'nammme' does not exist on type [...]

Example 2: typescript array of objects

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