TypeError: Unable to write page when calling writePage

[muhammadhananraza]

TypeError: Unable to write page when calling pdfWriter.writePage(current_page);

The error occurs occasionally (even with same data it works fine)

My initial hunch was resource (memory) limitation but that is not the case.

What could be the possible reason(s)?

[galkahana]

disk is not available? file cannot be written to?

[muhammadhananraza]

@galkahana we are not writing anything on disk. We are using stream writer (memory-streams npm package) to write in memory and then convert to buffer and return as response.

let ws = new require('memory-streams').WritableStream()
let pdfWriter = hummus.createWriter(new hummus.PDFStreamForResponse(ws));
......
......
......
let current_page = pdfWriter.createPage(0,0,page_width,page_height);
let cxt = pdfWriter.startPageContentContext(current_pagenot);
......
......
......
for loop data:
    .....
    .....
    cxt.writeText(...)
    pdfWriter.writePage(current_page); // the error occurs here
        current_page = pdfWriter.createPage(0, 0, page_width, page_height);
        cxt = pdfWriter.startPageContentContext(current_page); 
        .....
        .....

....
....
....
cxt.writeText(...)
pdfWriter.writePage(current_page);
pdfWriter.end();
let bufferResult = ws.toBuffer();
ws.end();
return bufferResult;

[galkahana]

i dont know. looks ok.

[muhammadhananraza]

@galkahana does the library use/access disk internally?

[galkahana]

No. Itll write to a file only if you asked it to, and read from it only if you gave it something to read (images, fonts, etc.)