Inspection/web/middlewares/webpack-dev.js

'use strict';
const express = require('express')
const webpack = require('webpack');
const devConfig = require('../webpack.config');
const middleware = require('webpack-dev-middleware');
const proxy = require('koa-better-http-proxy');
const url = require('url');

const compiler = webpack(devConfig);

module.exports = {
   entry: function (app, router, opts) {
      app.use(proxy('http://localhost:5901', {
         filter: function (ctx) {
            return /\/build/.test(url.parse(ctx.url).path);
         },
         proxyReqPathResolver: function (ctx) {
            return 'client' + url.parse(ctx.url).path;
         }
      }));

      app.use(proxy('http://localhost:5901', {
         filter: function (ctx) {
            return /\/$/.test(url.parse(ctx.url).path);
         },
         proxyReqPathResolver: function (ctx) {
            return 'client/build/index.html';
         }
      }));

      const server = express();
      server.use(middleware(compiler));
      //server.use(require("webpack-hot-middleware")(compiler));
      server.listen('5901', function (err) {
         if (err) {
            console.log(err);
         }
      })
   }
};