Typescript interface for nested array of objects

You can you following two method if you are using two interfaces.

export interface Address {
        street: string,
        province: string
    }

  export interface User {
        name: string;
        address: Address[]
    }

export interface User {
        name: string;
        address: Array<Address>
    }

I you are using only single interface you can use following notation

export interface User {
    name: string;
    address: {
       street: string,
       province: string
    }[]
}