redux-devtools/packages/redux-devtools-remote/examples/counter/components/Counter.js

import React, { Component, PropTypes } from 'react';

class Counter extends Component {
  render() {
    const { increment, incrementIfOdd, incrementAsync, decrement, counter } =
      this.props;
    return (
      <p>
        Clicked: {counter} times <button onClick={increment}>+</button>{' '}
        <button onClick={decrement}>-</button>{' '}
        <button onClick={incrementIfOdd}>Increment if odd</button>{' '}
        <button onClick={() => incrementAsync()}>Increment async</button>
      </p>
    );
  }
}

Counter.propTypes = {
  increment: PropTypes.func.isRequired,
  incrementIfOdd: PropTypes.func.isRequired,
  incrementAsync: PropTypes.func.isRequired,
  decrement: PropTypes.func.isRequired,
  counter: PropTypes.number.isRequired,
};

export default Counter;