The `Modify` type is a utility type that creates a modified version of a given base type by omitting certain properties and making others optional.

Modify.ts

declare const brand: unique symbol;
export type Brand<BaseType, TBrand extends PropertyKey> = BaseType & { [brand]: TBrand };

/**
 * The `Modify` type is a utility type that creates a modified version of a given base type
 * by omitting certain properties and making others optional. This is composed of three main
 * operations:
 *
 * - Removes properties from the base type as specified in the `Omitted` parameter.
 * - Makes properties optional as specified in the `Optional` parameter from the remaining keys
 *   after omission.
 * - Retains other properties without modification.
 *
 * @template BaseType The original base type from which modifications are made. This should be an object type.
 * @template Omitted The union of keys in the base type to be omitted entirely.
 * @template Optional The union of keys in the base type, after omission, to be marked as optional.
 */
export type Modify<
	BaseType extends object,
	Omitted extends PropertyKey & keyof BaseType = never,
	Optional extends PropertyKey & keyof Omit<BaseType, Omitted> = never,
> = Omit<Omit<BaseType, Omitted>, Optional> & Partial<Pick<BaseType, Optional>>;