Create deep-equal props that are not shallow-equal

deep_comparison.js

export class SampleComponent extends React.Component {
  shouldComponentUpdate(nextProps, nextState) {
    return !_.isEqual(this.props, nextProps) ||
      !_.isEqual(this.state, nextState);
  }

  render() {
    return <div className={this.props.className}>foo</div>;
  }
}