SuiteScript 2.0 Render PDF to Browser without Saving - suitescript2.0

Question

I have a Suitelet rendering a PDF from various record types which do not currently have Advanced PDF functionality.
Everything works fine when I file.save() the finished PDF, but I would like the option to open the PDF in the browser without saving to the file cabinet first.
Currently, the action part of the script is this:
var templateFile = config.getValue({fieldId:'custrecord_extpdf_template_xml'});
var templateHTML = file.load({id: templateFile}).getContents();
var renderer = render.create();
renderer.templateContent = templateHTML;
renderer.addRecord('record',rec);
renderer.addRecord('config',config);
if (SAVETORECORD) {
var PDF = renderer.renderAsPdf();
PDF.folder = config.getValue({fieldId: 'custrecord_extpdf_temp_folder'});
PDF.name = param.rectype + param.id + '.pdf';
var fid = PDF.save();
var attachitem = record.attach({
record: { type: 'file', id: fid },
to: { type: param.rectype, id: param.id }
})
context.response.write(file.load({id:fid}).url )
}
else {
var PDF = renderer.renderAsPdf();
PDF.name = param.rectype + param.id + '.pdf';
context.response.writeFile(PDF,false)
}
When the variable SAVETORECORD is true, the PDF renders nicely, and opens in a new tab, attaches to the record, and is saved to the file cabinet.
However, when SAVETORECORD is false, a new window opens but is BLANK.
The Suitelet is called from a custom button trigger with the following code:
var response = https.get({url: suiteletURL });
if (response.body) window.open(response.body,'_blank');
window.location.reload(true);
I've tried context.response.writeFile(PDF,false) and context.response.writeFile(PDF,true) but get the same result.
What am I missing here?

Answer 1

After sleeping on it, I figured what I'd done wrong.
To save the PDF, the code stays as is.
To open in the browser without saving, I just needed to open the SuiteLet URL rather than the response.body from the button script:
if (SAVERECORD) {
var response = https.get({url: suiteletURL });
if (response.body) window.open(response.body,'_blank');
}
else {
window.open(suiteletURL,'_blank');
}
window.location.reload(true);