Updated: electron version->4 & webpack version -> 4

src/main/index.dev.js

@@ -7,9 +7,6 @@
 
 /* eslint-disable */
 
-// Set environment for development
-process.env.NODE_ENV = 'development'
-
 // Install `electron-debug` with `devtron`
 require('electron-debug')({ showDevTools: false })
 
@@ -24,15 +21,4 @@ require('electron').app.on('ready', () => {
 })
 
 // Require `main` process to boot app
-if (process.env.DEBUG_ENV === 'debug') {
-  require('babel-core/register')({
-    'presets': [
-      ['env', {
-        'targets': {
-          'node': true
-        }
-      }]
-    ]
-  })
-}
-require('./index')
+require('./index')

src/main/index.js

@@ -477,17 +477,17 @@ const shortKeyHash = {
   upload: uploadClipboardFiles
 }
 
-const isSecondInstance = app.makeSingleInstance(() => {
+const gotTheLock = app.requestSingleInstanceLock()
+
+if (!gotTheLock) {
+  app.quit()
+} else {
   if (settingWindow) {
     if (settingWindow.isMinimized()) {
       settingWindow.restore()
     }
     settingWindow.focus()
   }
-})
-
-if (isSecondInstance) {
-  app.quit()
 }
 
 if (process.platform === 'win32') {