ElectronJs无声打印PDF

I have a simple electronJS application which interacts with my laravel backend server. The backend server produces a PDF to a certain size such as 86mm x 54mm and streams the PDF to my electronJS application for it to print silently to the default printer. Currently in my Electron application I get the popup to save the streamed PDF to the machine rather than it print silently.

My electronJs code handling the print method.

const printWindow = new BrowserWindow({ show: false });
printWindow.loadURL('http://localhost:8000/pass');
printWindow.webContents.on('did-finish-load', () => {
   printWindow.print({ silent: true, deviceName: '' });
});

My laravel code for returning the PDF after hitting a route.

Route::get('/pdf', function () {
    $pdf = \PDF::loadView('pdf.layout');
    $pdf->setPaper([0, 0, 175.748, 243.78], 'landscape');
    return $pdf->stream('pdf.pdf');
});

I expected the pdf to print to the default printer however this produces a popup to download the PDF file?