TypeScript中的泛型函数找不到接口属性

Question

I am trying to create the following function in typescript using generics but it is showing me the following error:

"Propoerty 'id' does not exist on type 'CustomerInterface'" This happens in: customer.id === +id

        getCustomer<CustomerInterface>(id: number | string){
            return this.getCustomers<CustomerInterface>('')
                .then(customers => customers.find(customer => customer.id === +id));
        }

The interface definition:

export interface CustomerInterface {
    id: number
    name: string
    display_name: string
    address: string
    city: string
    phone_number: string
}

Answer 1

A time later I found the solution using Generics constraints =P It should be like:

getCustomer<T extends CustomerInterface>(id: number | string){
    return this.getCustomersCloseTo<T>('')
        .then(customers => customers.find(customer => customer.id === +id));
}