npm反应中抛出错误

Question

以下是我的代码，其中npm抛出错误。之前它工作正常，但是当我在不同的目录中复制相同的代码时，运行npm install，现在尝试运行npm start。抛出错误：

function myWayPoint() {
// Search form stick to top using waypoints.js
  if(window.innerWidth; > 768 && $("body").find('div').attr('id') == 'home'){
    var sticky = new Waypoint.Sticky({
      element: $('.thm-search')[0],
      offset:  54
    });
  }
}
myWayPoint();

代码是：

ERROR in ./www/plugins/entry.js
Module build failed: SyntaxError: Unexpected token (7:8)

5 | import routes from './routes/routes'
6 | 
> 7 | render((<Router history={browserHistory} routes={routes} />),document.getElementById('app'))

的package.json

import React from 'react';
import { render } from 'react-dom';
import { Router , browserHistory } from 'react-router';

import routes from './routes/routes';

render((<Router history={browserHistory} routes={routes} />), document.getElementById('app'));