electron程序，如何注册localshortcut本地快捷键？

npm install electron-localshortcut --save

// mainWindow = new BrowserWindow({});
const electronLocalshortcut = require('electron-localshortcut');
electronLocalshortcut.register(mainWindow, '<shortcut>', () => {
    //...
});

function createWindow () {
  mainWindow = new BrowserWindow({
    width: 800,
    height: 600,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js')
    }
  })
  mainWindow.loadFile('index.html')


  // 重点代码开始
  const electronLocalshortcut = require('electron-localshortcut');
  electronLocalshortcut.register(mainWindow, 'CmdOrCtrl+5', () => {
    dialog.showMessageBox({
      title: "帮助",//信息提示框标题
      message: "localshortcut",//信息提示框内容
      buttons: ["ok"],//下方显示的按钮
      noLink:true, //win下的样式
      type: "info",//图标类型
    }, function (index) {
      console.log(index);
    });
  });
  // 重点代码结束
  

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

console.log(
 electronLocalshortcut.isRegistered(win, 'Ctrl+A')
); 

electronLocalshortcut.unregister(win, 'Ctrl+A');

electronLocalshortcut.unregisterAll(win);

electronLocalshortcut.disableAll(win);

electronLocalshortcut.enableAll(win);