The argument 'path' must be a string or Uint8Array without null bytes

[rodpf]

Hi,

Since I need support for ES5, I am using V4.3.1.

I am passing a ByteArray and receiving the following error:

The argument 'path' must be a string or Uint8Array without null bytes. Received Uint8Array(95657)

This is the snippet for creating the stream:

        const file = await _getObjectStream(null)

        const merger = new PDFMerger();
        for (let i=0 ; i<1000; i++)
        {
            await merger.add (file)
        }
        const mergedPdfBuffer = await merger.saveAsBuffer();

The error occurs on await merger.add (file)

As you can see I am receiving the file as a Uint8Array and trying to merge the same content a few times to execute a stress test and limit the size of the merged file.

The value for 'file' is valid, since I can see and download the content from the same variable.

[mojoaxel]

It looks like this error is thrown by node itself and not by us or pdf-lib.

@rodpf You could try to ensure file is a Uint8Array:

await merger.add(Buffer.from(file));

see also foliojs/pdfkit#1446