如何正确声明以下typescript接口/类型？

interface MyInterface {
  name: string;
  age: number;
}

interface MyInterface {
  name?: string;
  age?: number;
}

interface MyInterface {
  readonly name: string;
  readonly age: number;
}

interface MyInterface {
  (param1: string, param2: number): void;
}

interface MyInterface<T> {
  data: T;
}

interface MyInterface {
  name: string;
  age: number | string;
}