fix

index.js

-const {app, BrowserWindow, shell} = require('electron')
+const electron = require('electron')
+// Module to control application life.
+const app = electron.app
+// Module to create native browser window.
+const BrowserWindow = electron.BrowserWindow
 
 // this should be placed at top of main.js to handle setup events quickly
 if (handleSquirrelEvent()) {
@@ -70,36 +74,25 @@ function handleSquirrelEvent() {
 
 // Keep a global reference of the window object, if you don't, the window will
 // be closed automatically when the JavaScript object is garbage collected.
-let win
+let mainWindow
 
-function createWindow() {
+function createWindow () {
     // Create the browser window.
-    win = new BrowserWindow({width: 1000, height: 550, resizable: false, backgroundColor: '#333333', darkTheme: true, acceptFirstMouse: true})
+    mainWindow = new BrowserWindow({width: 800, height: 600})
 
     // and load the index.html of the app.
-    win.loadURL(`file://${__dirname}/index.html`)
+    mainWindow.loadURL(`file://${__dirname}/index.html`)
 
     // Open the DevTools.
-    win.webContents.openDevTools()
+    mainWindow.webContents.openDevTools()
 
-    win.webContents.on('new-window', function(event, url) {
-        event.preventDefault();
-        shell.openExternal(url);
-    });
-
-    win.webContents.on('did-fail-load', function () {
-        win.loadURL(`file://${__dirname}/index.html`)
-    })
     // Emitted when the window is closed.
-    win.on('closed', () => {
+    mainWindow.on('closed', function () {
         // Dereference the window object, usually you would store windows
         // in an array if your app supports multi windows, this is the time
         // when you should delete the corresponding element.
-        win = null
+        mainWindow = null
     })
-
-
-
 }
 
 // This method will be called when Electron has finished
@@ -108,19 +101,22 @@ function createWindow() {
 app.on('ready', createWindow)
 
 // Quit when all windows are closed.
-app.on('window-all-closed', () => {
-    // On macOS it is common for applications and their menu bar
+app.on('window-all-closed', function () {
+    // On OS X it is common for applications and their menu bar
     // to stay active until the user quits explicitly with Cmd + Q
-    //if (process.platform !== 'darwin') {
+    if (process.platform !== 'darwin') {
         app.quit()
-    //}
+    }
 })
 
-app.on('activate', () => {
-    // On macOS it's common to re-create a window in the app when the
+app.on('activate', function () {
+    // On OS X it's common to re-create a window in the app when the
     // dock icon is clicked and there are no other windows open.
-    if (win === null) {
+    if (mainWindow === null) {
         createWindow()
     }
 })
 
+// In this file you can include the rest of your app's specific main process
+// code. You can also put them in separate files and require them here.
+