如何检查类是否覆盖ES6中的父方法

Question

I want to create something like interface in ES6 and I want to force overide methods in base class.

class DatabaseAPI {
  login() {
     throw new Error('Unimplemented method: login');
  }
}

class UserService extends DatabaseAPI {
  constructor() {
    super();
  }
}

Is there any way to force above error during creating UserService class?

Answer 1

No, there is not. The error will be thrown once login is called.

Answer 2

我写了这个包，你可以尝试一下es6-interface