[Bug]: v4.8.69 update to 3.x canvas - Cannot assign to read only property

[prescottprue]

Attach (recommended) or Link to PDF file

N/A

Web browser and its version

JSDom 25.0.1, Chrome 131.0.6778.70

Operating system and its version

Ubuntu 22

PDF.js version

v4.8.69

Is the bug present in the latest PDF.js version?

Yes

Is a browser extension

No

Steps to reproduce the problem

1. Install v4.8.69 of pdfjs-dist
2. Attempt to use canvas API such as canvas.getContext (as described in Mozilla MDN docs):

   const canvasCtx = document.createElement('canvas').getContext('2d')

3. See Cannot assign to read only property error such as Cannot assign to read only property 'createPattern' of object '#<CanvasRenderingContext2D'

What is the expected behavior?

Its expected that using the canvas API continues to work as as described in Mozilla MDN docs as it did in v4.7.76

What went wrong?

v4.8.69 of pdfjs-dist updates to canvas v3.0.0 RC which has a known issue in canvas with read only properties (a PR has been merged to fix this but has not been released yet)

Link to a viewer

No response

Additional context

No response

[Snuffleupagus]

Fixed by PR #19015.

[jacob-israel-turner]

Thanks for fixing this @Snuffleupagus! It'll be nice to not have to wrestle with canvas going forward.

Any idea when the next release will be cut? I'm still encountering this bug on v4.8.69, and I haven't found a workaround.

EDIT: I found a workaround - downgrading canvas to 2.x fixes the issue. IDK if there are any incompatibility issues with pdf.js v4.8.69 though. Canvas 2.x does not work in workers either. I'm still looking forward to #19015 shipping!