componentDidUpdate = (prevProps, prevState) => {
  const differentProps = {};
  const differentState = {};

  Object.keys(prevProps).forEach(k => {
    if (prevProps[k] !== this.props[k]) {
      differentProps[k] = [prevProps[k], this.props[k]];
    }
  });

  Object.keys(this.props).forEach(k => {
    if (prevProps[k] !== this.props[k]) {
      differentProps[k] = [prevProps[k], this.props[k]];
    }
  });

  Object.keys(prevState).forEach(k => {
    if (prevState[k] !== this.state[k]) {
      differentState[k] = [prevState[k], this.state[k]];
    }
  });

  Object.keys(this.state).forEach(k => {
    if (prevState[k] !== this.state[k]) {
      differentState[k] = [prevState[k], this.state[k]];
    }
  });

  console.log(differentProps, differentState);
};