acdlite

// getComponent is a function that returns a promise for a component
// It will not be called until the first mount
function asyncComponent(getComponent) {
  return class AsyncComponent extends React.Component {
    static Component = null;
    state = { Component: AsyncComponent.Component };

    componentWillMount() {
      if (!this.state.Component) {
        getComponent().then(Component => {

madcoda

import React, { Component } from 'react'
import { BrowserRouter as Router, Route, Link, Match, Redirect, Switch } from 'react-router-dom'

import OverviewPage from './page/OverviewPage'
import AccountPage from './page/AccountPage'

/*
  Layouts, inline define here for demo purpose
  you may want to define in another file instead
 */