interface ICustomer {
    name: string;
}

class CustomerClass {
    get self() {
        return this as any as ICustomer
    }

    bar() {
        console.log(this.self.name)
    }
}

type Customer = CustomerClass & ICustomer

function Customer(data: ICustomer): Customer {
    const ret = { ...data } as Customer;

    return ret;
}