How to use the electron-devtools-installer.VUEJS_DEVTOOLS function in electron-devtools-installer

mainWindow = new BrowserWindow(defaultWindow) // put demoWindow here
  mainWindow.loadURL(config.url)

  if (is.windows()) {
    mainWindow.setMenu(null)
  }

  if (is.dev()) {
    mainWindow.setSize(1200, 600)
    mainWindow.setResizable(true)
    mainWindow.setMovable(true)
    BrowserWindow.addDevToolsExtension(path.join(__dirname, '../node_modules/devtron'))

    let installExtension = require('electron-devtools-installer')

    installExtension.default(installExtension.VUEJS_DEVTOOLS)
      .then((name) => mainWindow.webContents.openDevTools())
      .catch((err) => console.log('An error occurred: ', err))
  }

  if (is.osx() && is.production()) {
    // allow dev tools in prod
    mainWindow.webContents.on('devtools-opened', (event, deviceList, callback) => {
      mainWindow.setSize(1200, 600)
      mainWindow.setResizable(true)
    })

    mainWindow.webContents.on('devtools-closed', (event, deviceList, callback) => {
      mainWindow.setSize(WINDOW.width, WINDOW.height)
      // mainWindow.setResizable(false)
    })

width: 1000,
    webPreferences: {
      webSecurity: false,
      nodeIntegration: true,
      allowDisplayingInsecureContent: true
    }
  })

  mainWindow.loadURL(config.url)
  // mainWindow.openDevTools();
  if (process.env.NODE_ENV === 'development') {
    BrowserWindow.addDevToolsExtension(path.join(__dirname, '../node_modules/devtron'))

    let installExtension = require('electron-devtools-installer')

    installExtension.default(installExtension.VUEJS_DEVTOOLS)
      .then((name) => mainWindow.webContents.openDevTools())
      .catch((err) => console.log('An error occurred: ', err))
  }

  mainWindow.on('closed', () => {
    mainWindow = null
  })

  console.log('mainWindow opened')
}

require('electron').app.on('ready', () => {
  let installExtension = require('electron-devtools-installer')
  installExtension.default(installExtension.VUEJS_DEVTOOLS)
    .then(() => {})
    .catch(err => {
      console.log('Unable to install `vue-devtools`: \n', err)
    })
})

require('electron').app.on('ready', () => {
  require('devtron').install()

  let installExtension = require('electron-devtools-installer')
  installExtension.default(installExtension.VUEJS_DEVTOOLS)
      .then(() => {})
      .catch(err => {
        console.log('Unable to install `vue-devtools`: \n', err)
      })
})

width: 700, 
    height: 75,
    minWidth: 700,
    minHeight: 75,
    frame: false,
    transparent: true
  })

  move(mainWindow)
  mainWindow.loadURL(`file://${__dirname}/index.html`)
  
  if (isDev) {
    mainWindow.webContents.openDevTools()
    
    const installExtension = require('electron-devtools-installer')
    installExtension.default(installExtension.VUEJS_DEVTOOLS)
      .then(name => console.log(`Added Extension:  ${name}`))
      .catch(err => console.log('An error occurred: ', err))
  }

  
  mainWindow.on('closed', function () {
    mainWindow = null
  })

  const ret = globalShortcut.register('Alt+Space', () => {
    if (mainWindow.isFocused()) mainWindow.hide()
    else mainWindow.show()
  })

  if (!ret) {
    console.log('Global shortcut registration failed')

global.appRoot = path.resolve(__dirname);
  global.botPath = path.join(global.appRoot, 'gofbot');
  if (process.env.NODE_ENV === 'development') {
    global.botPath = path.join(global.appRoot, 'dist/gofbot')
  }

  mainWindow.loadURL(config.url);

  if (process.env.NODE_ENV === 'development') {
    BrowserWindow.addDevToolsExtension(path.join(__dirname, '../node_modules/devtron'));

    let installExtension = require('electron-devtools-installer');

    installExtension.default(installExtension.VUEJS_DEVTOOLS)
      .then((name) => mainWindow.webContents.openDevTools())
      .catch((err) => console.log('An error occurred: ', err))
  }

  mainWindow.on('closed', () => {
    mainWindow = null
  });

  console.log('mainWindow opened')
}

win.on('focus', () => {
      web.send('win-focus')
    })

    win.on('enter-full-screen', () => {
      web.send('enter-full-screen')
    })

    win.on('leave-full-screen', () => {
      web.send('leave-full-screen')
    })

    if (isDev) {
      const installExtension = require('electron-devtools-installer')
      installExtension.default(installExtension.VUEJS_DEVTOOLS)
        .then(name => console.log(`Added Extension:  ${name}`))
        .catch(err => console.log('An error occurred: ', err))
    }

    this.wins++
    win.$state = {
      unsaved: 0
    }
    win.$config = config

    return win
  }
}

require('electron').app.on('ready', () => {
  let installExtension = require('electron-devtools-installer')
  installExtension.default(installExtension.VUEJS_DEVTOOLS)
    .then(() => {})
    .catch(err => {
      console.log('Unable to install `vue-devtools`: \n', err)
    })
})