google-map-react/src/google_map_map.js

import React, { Component } from 'react';

const style = {
  width: '100%',
  height: '100%',
  left: 0,
  top: 0,
  margin: 0,
  padding: 0,
  position: 'absolute',
};

export default class GoogleMapMap extends Component {
  shouldComponentUpdate() {
    return false; // disable react on this div
  }

  render() {
    const { registerChild } = this.props;
    return <div ref={registerChild} style={style} />;
  }
}