main.js

const {app, BrowserWindow} = require('electron')
const path = require('path')
const url = require('url')

let win

// this should be placed at top of main.js to handle setup events quickly
if (handleSquirrelEvent(app)) {
  // squirrel event handled and app will exit in 1000ms, so don't do anything else
  return;
}

function createWindow () {
  win = new BrowserWindow(
      {width: 800, 
      height: 600,
      backgroundColor: '#ffffff',
      icon: url.format({
        pathname: path.join(__dirname, 'dist/assets/icon/angular-electron.ico'),
        protocol: 'file:',
        slashes: true
      }),
      autoHideMenuBar:true
   })

  // load the dist folder from Angular
  win.loadURL(url.format({
    pathname: path.join(__dirname, 'dist/index.html'),
    protocol: 'file:',
    slashes: true
  }))

  win.webContents.on('new-window', function(e, url) {
    e.preventDefault();
    require('electron').shell.openExternal(url);
  });

  // Open the DevTools optionally:
   win.webContents.openDevTools()

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

app.on('ready', createWindow)


app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', () => {
  if (win === null) {
    createWindow()
  }
})
function handleSquirrelEvent(application) {
  if (process.argv.length === 1) {
      return false;
  }

  const ChildProcess = require('child_process');
  const path = require('path');

  const appFolder = path.resolve(process.execPath, '..');
  const rootAtomFolder = path.resolve(appFolder, '..');
  const updateDotExe = path.resolve(path.join(rootAtomFolder, 'Update.exe'));
  const exeName = path.basename(process.execPath);

  const spawn = function(command, args) {
      let spawnedProcess, error;

      try {
          spawnedProcess = ChildProcess.spawn(command, args, {
              detached: true
          });
      } catch (error) {}

      return spawnedProcess;
  };

  const spawnUpdate = function(args) {
      return spawn(updateDotExe, args);
  };

  const squirrelEvent = process.argv[1];
  switch (squirrelEvent) {
      case '--squirrel-install':
      case '--squirrel-updated':
          // Optionally do things such as:
          // - Add your .exe to the PATH
          // - Write to the registry for things like file associations and
          //   explorer context menus

          // Install desktop and start menu shortcuts
          spawnUpdate(['--createShortcut', exeName]);

          setTimeout(application.quit, 1000);
          return true;

      case '--squirrel-uninstall':
          // Undo anything you did in the --squirrel-install and
          // --squirrel-updated handlers

          // Remove desktop and start menu shortcuts
          spawnUpdate(['--removeShortcut', exeName]);

          setTimeout(application.quit, 1000);
          return true;

      case '--squirrel-obsolete':
          // This is called on the outgoing version of your app before
          // we update to the new version - it's the opposite of
          // --squirrel-updated

          application.quit();
          return true;
  }
};