Race condition in document generation.

I just started using the PDFKit. The following works after calling “doc.end()”:

// ... doc.end()
setTimeout(() => {
        res.download(`www/${fileName}`);
    }, 3000);

but this returns an empty file:

// ... doc.end()
res.download(`www/${fileName}`);

It appears that doc.end() is a synchronous function. Am I missing an async call, or is it a race condition on the disk?

If I try to read the file from disk immediately after calling doc.end() using fs, I get an empty file then also.

Thanks.

[alafr]

It is asynchronous:

var doc = new PDFDocument();
var stream = fs.createWriteStream('file.pdf');
stream.on('finish', function() {
  // The file is ready
});
doc.pipe(stream);
doc.end();

See also issues #642, #633, #525 and #265

[fabltd]

Yes it has PNG images