Facebook, OAuth login. Correct opener in window

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It will be great if you could add the new window implementation inside the 'new-window' event handler.

mainWindow.webContents.on('new-window', function (e, url, frameName, disposition, options) {
  options.webPreferences.affinity = 'main-window';
Object.assign(options, {
      width: 100,
      height: 100
    })
    e.newGuest = new BrowserWindow(options)
});

It seems like the above code is not working.

This worked(in your example, prevention is forgotten):

mainWindow.webContents.on('new-window', function (e, url, frameName, disposition, options) {
    options.webPreferences.affinity = 'main-window';
    Object.assign(options, {
      width: 100,
      height: 500
    })
    // not really need uncomment next lines. not sure, but navigation(in child window) may break, or something else
    // e.newGuest = new BrowserWindow(options)
    // e.preventDefault();
  });

I also want to note that the workaround works only in the electron@2
In my last tests, this solution not actually worked at electron@3-4