node-demo produces 2 blank pages

Using latest pdf.js - the one with drawLine...
With node.js v0.4.12, which might have something to do with it, the demo produces 2 blank pages; no text or graphics. Select All, copy, paste into a text doc pastes nothing. testFile57.pdf in the repo and download displays properly, select/copy/paste pastes the text into a text editor. Ubuntu Natty 11.04.

I note that in the repo/download file, the node version is v0.3.0-pre.

There are differences between the files:
testFile57:
%PDF-1.3

<>
BT /F1 16.00 Tf ET
BT 56.69 785.20 Td (hello, I am PDF.) Tj ET
BT 56.69 756.85 Td (i was created using node.js version: v0.3.0-pre) Tj ET
BT 56.69 728.50 Td (i can also be created from the browser) Tj ET

endstream
endobj

testFile44 (mine):
%PDF-1.3

<>
BT undefined 16.00 Tf ET
BT /F0 16.00 Tf ET
BT 56.69 785.20 Td (hello, I am PDF.) Tj ET
BT /F0 16.00 Tf ET
BT 56.69 756.85 Td (i was created using node.js version: v0.4.12) Tj ET
BT /F0 16.00 Tf ET
BT 56.69 728.50 Td (i can also be created from the browser) Tj ET

endstream
endobj

Similar block a bit later on - also has 'undefined'.

Update: I was able to get it to work:

1. node-demo.js:
   var doc = new pdf();
   doc.setFont(1); //<<<< added to make sure fonts[] had 1 font
   doc.text(20, 20, 'hello, I am PDF.');
   doc.text(20, 30, 'i was created using node.js version: ' + process.version);
   doc.text(20, 40, 'i can also be created from the browser');
2. pdf.js:
   var _addPage = function() {
   beginPage();
   // Set line width
   out(sprintf('%.2f w', (lineWidth * k)));

// 16 is the font size
pageFontSize = fontSize;
pageFont = font;
//DLC-->>>>>delete out('BT ' + fonts[font] + ' ' + parseInt(fontSize) + '.00 Tf ET');    
//fonts[] is undefined at this point when called by _addPage();

}

Alternately, rename setFont: function... to var _setFont = function... and move the function up where _addPage() is. Then create
setFont: function(f){
_setFont(f);
},
in its place. Then, where _addPage() is called to automatically create the first page, FIRST call
_setFont(1);

This change removes the need for node-demo.js to have an initializing call to setFont.

Start with node-demo.js and pdf.js, reproduce the blank-page output using the reported Node.js version, and compare the generated font commands with testFile57.pdf. Trace the first page creation and font initialization, then verify that the generated PDF contains valid font references and renders selectable text and graphics.