리덕스 모듈을 수정했으면 CounterContainer에서 호출하던 액션 생성 함수도 변경해 주세요.

container/CounterContainer.js

import React from 'react';
import { connect } from 'react-redux';
import { increaseAsync, decreaseAsync } from '../modules/counter';
import Counter from '../components/Counter';

const CounterContainer = ({ number, increaseAsync, decreaseAsync }) => {
  return (
    <Counter
      number={number}
      onIncrease={increaseAsync}
      onDecrease={decreaseAsync}
    />
  );
};

export default connect(
  state => ({
    number: state.counter
  }),
  {
    increaseAsync,
    decreaseAsync
  }
)(CounterContainer);

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