泛型用法

class Person {
  name: string;
  age: number;
}
type PartialPerson = Partial<Person>; // 所有属性变为可选

class Person {
  name: string;
  age: number;
}
type RequiredPerson = Required<Person>; // 所有属性变为必选

class Person {
  name: string;
  age: number;
}
type ReadonlyPerson = Readonly<Person>; // 所有属性变为只读

class Person {
  name: string;
  age: number;
}
type PickPerson = Pick<Person, 'name'>; // 选择部分属性

class Person {
  name: string;
  age: number;
}
type OmitPerson = Omit<Person, 'name'>; // 删除部分属性