doc.rotate(90) fails

pdfkit.rotate.js

var PDFDocument= require('pdfkit');
var doc= new PDFDocument();


doc.save();
doc.x= doc.pages[0].width/2;
doc.y= doc.pages[0].height/2;
doc.fontSize(30);
doc.rotate(89.9, {origin: [doc.x, doc.y]});
doc.text('OK, GOOD');
doc.restore();

doc.save();
doc.x= doc.pages[0].width/2;
doc.y= doc.pages[0].height/2;
doc.fontSize(30);
doc.rotate(90, {origin: [doc.x, doc.y]});
doc.text('FAILURE');
doc.restore();


doc.write('test.pdf');
require('child_process').exec('open test.pdf');

Seems like the doc.rotate(90, {origin: [doc.x, doc.y]}); doesn't fail anymore