Ubah php ke node js

bagaimana mengubah script php ini di node js

if(!empty($_POST['data'])){ $data = $_POST['data']; $fname = "test.pdf"; // name the file $file = fopen("testa/pdf/" .$fname, 'w'); // open and write the file path fwrite($file, $data); //save data fclose($file); } else { echo "No Data Sent"; }

ke dalam sintaks node js

app.post('/receive', function (request, respond) {

});