class Loader extends React.Component {
      state = {
        Component: null
      };
    
      componentWillMount() {
        import('./Component').then(Component => {
          this.setState({ Component });
        });
      }

      render() {
        const { Component } = this.state;
        if (!Component) {
          return <div>Loading...</div>;
        } else {
          return <Component/>;
        };
      }
    }