Increase ES6 utilization in webpack.config.js

webpack.config.js

 const process = require('process');
 const webpack = require('webpack');
 
-const aui_css = __dirname + '/node_modules/@atlassian/aui/dist/aui/css/';
+const aui_css = `${__dirname}/node_modules/@atlassian/aui/dist/aui/css/`;
 
 /**
  * The URL of the Jitsi Meet deployment to be proxy to in the context of
 const minimize
     = process.argv.indexOf('-p') !== -1
         || process.argv.indexOf('--optimize-minimize') !== -1;
-const node_modules = __dirname + '/node_modules/';
+const node_modules = `${__dirname}/node_modules/`;
 const plugins = [
     new webpack.LoaderOptionsPlugin({
         debug: !minimize,
-        minimize: minimize
+        minimize
     })
 ];
 const strophe = /\/node_modules\/strophe(js-plugins)?\/.*\.js$/;
         __filename: true
     },
     output: {
-        filename: '[name]' + (minimize ? '.min' : '') + '.js',
+        filename: `[name]${minimize ? '.min' : ''}.js`,
         libraryTarget: 'umd',
-        path: __dirname + '/build',
+        path: `${__dirname}/build`,
         publicPath: '/libs/',
-        sourceMapFilename: '[name].' + (minimize ? 'min' : 'js') + '.map'
+        sourceMapFilename: `[name].${minimize ? 'min' : 'js'}.map`
     },
-    plugins: plugins,
+    plugins,
     resolve: {
         alias: {
-            jquery: 'jquery/dist/jquery' + (minimize ? '.min' : '') + '.js'
+            jquery: `jquery/dist/jquery${minimize ? '.min' : ''}.js`
         },
         aliasFields: [
             'browser'
         ],
         extensions: [
+
             // Webpack 2 broke haste-resolver-webpack-plugin and I could not fix
             // it. But given that there is resolve.extensions and the only
             // non-default extension we have is .web.js, drop
  * @returns {string|undefined} If the request is to be served by the proxy
  * target, undefined; otherwise, the path to the local file to be served.
  */
-function devServerProxyBypass(request) {
-    let path = request.path;
-
+function devServerProxyBypass({ path }) {
     // Use local files from the css and libs directories.
     if (path.startsWith('/css/')) {
         return path;
     }
-    if (configs.some(function (c) {
+
+    const configs = module.exports;
+
+    if ((Array.isArray(configs) ? configs : Array(configs)).some(c => {
                 if (path.startsWith(c.output.publicPath)) {
                     if (!minimize) {
                         // Since webpack-dev-server is serving non-minimized
                         // artifacts, serve them even if the minimized ones are
                         // requested.
-                        Object.keys(c.entry).some(function (e) {
-                            var name = e + '.min.js';
+                        Object.keys(c.entry).some(e => {
+                            const name = `${e}.min.js`;
 
                             if (path.indexOf(name) !== -1) {
-                                path = path.replace(name, e + '.js');
+                                path = path.replace(name, `${e}.js`);
 
                                 return true;
                             }