React-能否从外部函数更新未声明的容器状态?

在未声明库的示例中,它们通过与订阅到容器的jsx按钮交互来更新容器中的状态。

import React from 'react';
import { render } from 'react-dom';
import { Provider, Subscribe, Container } from 'unstated';

type CounterState = {
  count: number
};

class CounterContainer extends Container<CounterState> {
  state = {
    count: 0
  };

  increment() {
    this.setState({ count: this.state.count + 1 });
  }

  decrement() {
    this.setState({ count: this.state.count - 1 });
  }
}

function Counter() {
  return (
    <Subscribe to={[CounterContainer]}>
      {counter => (
        <div>
          <button onClick={() => counter.decrement()}>-</button>
          <span>{counter.state.count}</span>
          <button onClick={() => counter.increment()}>+</button>
        </div>
      )}
    </Subscribe>
  );
}

render(
  <Provider>
    <Counter />
  </Provider>,
  document.getElementById('root')
);

有没有办法从容器外组件中的函数更新容器内的状态?例如,如果我想在一个承诺的返回过程中更新state,我该怎么做呢。伪码

login = () => {
    let url = baseURL + '/user/login?_format=json';  

    let data = {
      "name": this.state.email,  
      "pass": this.state.password
    };



        axios({
          url,
          method: "POST",
          headers: {
            'Accept':  'application/json',
            'Content-Type': 'application/json',
          },
          withCredentials: true,
          credentials: 'same-origin', 
          data,
          })
          .then(function(result) {
            console.log('result:', result);
                SET STATE HERE!!!!!!!
counter.increment()

              })
          .catch(error => console.log('error:', error));
      };