How to prevent app from interrupting macOS system shutdown?

[abelparayil]

I have implemented a feature where the app doesn't quit at all and in Mac what it does is that when clicking on the red button it just minimizes the app. I have tried using many ways but came up with one way where it worked and that was to ipc along with onbeforeunload

I injected a javascript like below

var jsCode = @" 

    const {ipcRenderer} = require('electron');
    if (window != null) {
      window.onbeforeunload = (e) = > {
        e.returnValue = false;
        ipcRenderer.send('minimize-app');
      };
    }

";

mainWindow.WebContents.OnDomReady += async() = > {
  if (mainWindow != null && !(await mainWindow.IsDestroyedAsync())) {
    await mainWindow.WebContents.ExecuteJavaScriptAsync(jsCode);
  }
};

which gets handled by this

Electron.IpcMain.On("minimize-app", async(e) =>
  {
  Console.WriteLine("Got in here");
  Log.Logger.Debug("Got in here");
  try {
    if (mainWindow != null && !(await mainWindow.IsDestroyedAsync())) {
      Console.Write("here as well");
      Log.Logger.Debug("here as well");
      mainWindow.Minimize();
      Console.WriteLine("Did this as well");
      Log.Logger.Debug("Did this as well");
    }
  } catch (Exception ex) {
    Log.Logger.Error(ex, "Error in minimize");
  });

The issue that I'm facing is that when I'm to shut down the system it goes into an infinite loop, I guess, making the app minimize again and again instead of quitting it, which interrupts the shutdown. I have tried adding

Electron.App.On("app-before-quit")

But adding any code related to Electron.App.On just breaks my app and I don't know the reason behind it. I was thinking just like how I came across onbeforeunload is there some javascript code that I can add to make it work?