如何在Typescript中访问回调中的类变量/方法？

class MyClass {
  private myVariable: string = "Hello";

  public myMethod(callback: () => void) {
    callback();
  }
}

const instance = new MyClass();
instance.myMethod(() => {
  console.log(instance.myVariable); // 可以直接访问类的变量
});

class MyClass {
  private myVariable: string = "Hello";

  public myMethod(callback: () => void) {
    callback.bind(this)();
  }
}

const instance = new MyClass();
instance.myMethod(function() {
  console.log(this.myVariable); // 可以直接访问类的变量
});

class MyClass {
  private myVariable: string = "Hello";
  private self: MyClass = this;

  public myMethod(callback: () => void) {
    callback();
  }
}

const instance = new MyClass();
instance.myMethod(function() {
  console.log(instance.self.myVariable); // 可以直接访问类的变量
});