function loadRoute(cb,name){
return (module) => cb(null,module[name]);
}
<Router history={hashHistory} >
<Route path="/" component={Unique_main}>
<IndexRoute component={main_pro} />
<Route path="people" getComponent={(location, cb)=> {
console.log(location);
System.import('./components/people/people.jsx')
.then(()=>loadRoute(cb,"default"))
.catch(errorLoading);
}}></Route>
</Route>
</Router>