Compatibility with Node v16+

[MonkOfTheFeels]

Hey there,

I am running the following code in a docker container with Canvas successfully installed (at least my understanding based on install steps mentioned in other issues).

import { pdfToPng } from 'pdf-to-png-converter';
import { readFileSync } from 'node:fs';

a = readFileSync('routes/test_pdf/1650457668823.pdf')
pngPages = pdfToPng( a, {viewportScale: 1.0})

I am getting the following error and can't for the life of me understand whats wrong.

node: ../../nan/nan_object_wrap.h:32: static T* Nan::ObjectWrap::Unwrap(v8::Local<v8::Object>) [with T = Context2d]: Assertion object->InternalFieldCount() > 0' failed. Aborted

Any help would be greatly appreciated.

[dichovsky]

Hey there,

Please specify more details about the issue, OS, Node version, etc.
Try to specify file path to the function, you don't need to read file beforehand.

[proasync]

I also get the error:
node: ../../nan/nan_object_wrap.h:32: static T* Nan::ObjectWrap::Unwrap(v8::Local<v8::Object>) [with T = Context2d]: Assertionobject->InternalFieldCount() > 0' failed.`

My code:
import { pdfToPng, PngPageOutput } from 'pdf-to-png-converter';

const pdfBuffer = Buffer.from(pdfDoc, 'base64');
const pngPages: PngPageOutput[] = await pdfToPng(pdfBuffer, { viewportScale: 1.0 });

My setup:
OS: Arch Linux
Kernel: 5.18.12-arch1-1
Node version: v18.6.0

Thanks for the effort with this repo.

[dichovsky]

At this moment pdf-to-png-converter is not able to work on Node version: v18, you should use v16

[MonkOfTheFeels]

That was what was causing my issue then as I am using node v18. Thanks so much both of you for the help with this!

My setup
Kernal: 5.10.102.1-microsoft-standard-WSL2 x86_64
Node Version: v18.7.0

I have updated the issue name to be clear on the cause of the issue.

[EHadoux]

That issue was due to Automattic/node-canvas#2025 now it's fixed with v2.10.2, maybe we can not use strict versions in package.json? Likewise pdfjs-dist has released a new major version.