Launcher/menubar.js

const {remote} = require('electron');
const {Menu, BrowserWindow, MenuItem, shell} = remote;
  
  function getCurrentWindow() {
    return remote.getCurrentWindow();
  }

  function minimizeWindow(browserWindow = getCurrentWindow()) {
    if (browserWindow.minimizable) {
      // browserWindow.isMinimizable() for old electron versions
      browserWindow.minimize();
    }
  }
  
  function unmaximizeWindow(browserWindow = getCurrentWindow()) {
    browserWindow.unmaximize();
  }
  
  function maxUnmaxWindow(browserWindow = getCurrentWindow()) {
    if (browserWindow.isMaximized()) {
      browserWindow.unmaximize();
    } else {
      browserWindow.maximize();
    }
  }
  
  function closeWindow(browserWindow = getCurrentWindow()) {
    browserWindow.close();
  }
  
  function isWindowMaximized(browserWindow = getCurrentWindow()) {
    return browserWindow.isMaximized();
  }
  
  module.exports = {
    getCurrentWindow,
    minimizeWindow,
    unmaximizeWindow,
    maxUnmaxWindow,
    isWindowMaximized,
    closeWindow,
  };