electron-tabs/demo/app.js

const electron = require('electron');
const app = electron.app;

app.on('ready', function () {
  const mainWindow = new electron.BrowserWindow({
    webPreferences: {
      webviewTag: true
    }
  });
  mainWindow.loadURL('file://' + __dirname + '/electron-tabs.html');
  mainWindow.on('ready-to-show', function () {
    mainWindow.show();
    mainWindow.focus();
  });
});