How to describe an object (array) in typescript?

Question

typescript

How to describe an object in typescript which is essentially an array of objects of the same type, but with access not by index but by key?

interface ItemI {
  name: string;
}

interface DataI {
  items: ? // object of ItemI
}

Answer 1

interface DataI {
  items: { [key: string]: ItemI };
}