typescript解构赋值怎么指定类型？

Question

下面有一个解构赋值，[invoice, customers] 中两个元素的推断类型分别是 const invoice 和 const customers：

const [invoice, customers] = await Promise.all([
    fetchInvoiceById(id),
    fetchCustomers(),
]);

const invoice: {
    amount: number;
    id?: string | undefined;
    date?: string | undefined;
    status?: $Enums.InvoiceStatus | undefined;
    customerId?: string | undefined;
}

const customers: {
    id: string;
    name: string;
    email: string;
    image_url: string;
}[]

现在我要把下面两个类型手动指定给 [invoice, customers] 中对应的元素，即 invoice 的类型为 InvoiceForm，customers 的类型为 CustomerField，语法应该怎么写？

type InvoiceForm = {
    id: string;
    customerId: string;
    amount: number;
    status: 'pending' | 'paid';
};

type CustomerField = {
    id: string;
    name: string;
};

Answer 1

const [invoice, customers]: [InvoiceForm, CustomerField] = await Promise.all([
  fetchInvoiceById(id),
  fetchCustomers(),
]);