doc.text() and doc.image() fail

[MasonP57]

I'm doing something very simple, just adding a QR code and some text to a pdf page. It fails.

I'm using it on Firebase Cloud Functions which uses Node v6.x

Here is the code that works and generates a pdf file that can be opened in a browser/google drive:

doc = new pdf()
pdfpath = path.join(os.tmpdir(), 'test.pdf')
doc.pipe(fs.createWriteStream(pdfpath))
doc.end()

This does not work:

doc = new pdf()
pdfpath = path.join(os.tmpdir(), 'test.pdf')
doc.pipe(fs.createWriteStream(pdfpath))
doc.text('hello world')
doc.end()

No idea how to fix this, every example I can find shows the same thing; that this should work just fine.

[MasonP57]

If I create a blank pdf file and it works, this is what I get from opening the file in Notepad:

%PDF-1.3
%ÿÿÿÿ
5 0 obj
<<
/Type /Page
/Parent 1 0 R
/MediaBox [0 0 612 792]
/Contents 3 0 R
/Resources 4 0 R
>>
endobj
4 0 obj
<<
/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]
>>
endobj
6 0 obj
<<
/Producer (PDFKit)
/Creator (PDFKit)
/CreationDate (D:20171205214225Z)
>>
endobj
2 0 obj
<<
/Type /Catalog
/Pages 1 0 R
>>
endobj
1 0 obj
<<
/Type /Pages
/Count 1
/Kids [5 0 R]
>>
endobj
3 0 obj
<<
/Length 23
/Filter /FlateDecode
>>
stream
xœ3T0 B]C ani¤�œË� �I�\
endstream
endobj
xref
0 7
0000000000 65535 f 
0000000327 00000 n 
0000000278 00000 n 
0000000384 00000 n 
0000000119 00000 n 
0000000015 00000 n 
0000000186 00000 n 
trailer
<<
/Size 7
/Root 2 0 R
/Info 6 0 R
>>
startxref
478
%%EOF

Here is the broken pdf created by having the line doc.text('hello world') in the code:

%PDF-1.3
%ÿÿÿÿ
5 0 obj
<<
/Type /Page
/Parent 1 0 R
/MediaBox [0 0 612 792]
/Contents 3 0 R
/Resources 4 0 R
>>
endobj
4 0 obj
<<
/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]
/XObject <<
/I1 6 0 R
>>
>>
endobj
7 0 obj
<<
/Producer (PDFKit)
/Creator (PDFKit)
/CreationDate (D:20171205205103Z)
>>
endobj
2 0 obj
<<
/Type /Catalog
/Pages 1 0 R
>>
endobj
1 0 obj
<<
/Type /Pages
/Count 1
/Kids [5 0 R]
>>
endobj

[alafr]

You can try to use the finish callback. It could be the server that timeouts before the document is finished. Maybe there is an option to wait longer?

var stream = fs.createWriteStream(pdfpath);
doc.pipe(stream);
stream.on('finish', function() {
  console.log('The file is ready');
});