In the second part of the TypeScript task: transform all fields of the Delivery type object into a new type using TypeScript utility types.

In TypeScript, to transform all fields of an object of type Delivery, you can use utility types such as Partial<T>, Required<T>, Readonly<T>, Pick<T, K>, Record<K, T>, and others.

If you want to transform all fields of an object, for example, to make them all optional, you can use Partial:

type Delivery = {
  id: number;
  address: string;
  date: Date;
  delivered: boolean;
};

// Make all fields optional
type PartialDelivery = Partial<Delivery>;

If you want to make all fields read-only:

// Make all fields read-only
type ReadonlyDelivery = Readonly<Delivery>;

If you want, for example, to convert all fields to strings:

// Convert all fields to strings
type StringifiedDelivery = {
  [K in keyof Delivery]: string;
};

Thus, by using mapped types and utility types, you can create new types based on the original Delivery.