[Bug]: ImageData is not defined - nodejs

[soadzoor]

Attach (recommended) or Link to PDF file

https://github.com/mozilla/pdf.js/files/13179307/c53a656b-551d-4c24-bfb6-f994ef3a6d4b.pdf

But I believe it has nothing to do with the PDF file itself.

Web browser and its version

Node.js v22.11.0

Operating system and its version

Ubuntu 22.04.2 LTS (but I tried with newest MacOS as well, same issue...)

PDF.js version

4.9.155

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

Yes

Is a browser extension

No

Steps to reproduce the problem

1. Clone this repo: https://github.com/soadzoor/node-pdfjs
2. Run npm install
3. Run node index.js

What is the expected behavior?

It should generate a PNG file

What went wrong?

It generates a runtime error when running node index.js:

file:///home/soadzoor/works/node-pdfjs/node_modules/pdfjs-dist/build/pdf.mjs:6910
if (imgData instanceof ImageData) {
^

ReferenceError: ImageData is not defined
at putBinaryImageData (file:///home/soadzoor/works/node-pdfjs/node_modules/pdfjs-dist/build/pdf.mjs:6910:26)
at CanvasGraphics.paintInlineImageXObject (file:///home/soadzoor/works/node-pdfjs/node_modules/pdfjs-dist/build/pdf.mjs:8505:7)
at CanvasGraphics.paintImageXObject (file:///home/soadzoor/works/node-pdfjs/node_modules/pdfjs-dist/build/pdf.mjs:8431:10)
at CanvasGraphics.executeOperatorList (file:///home/soadzoor/works/node-pdfjs/node_modules/pdfjs-dist/build/pdf.mjs:7177:20)
at InternalRenderTask._next (file:///home/soadzoor/works/node-pdfjs/node_modules/pdfjs-dist/build/pdf.mjs:13056:37)

Link to a viewer

No response

Additional context

After the fix was released for #19145 , I was really excited to give it a shot again, but now it says a different runtime error (see above), when I try to run it in node.js environment.

I guess ImageData is not available in node.js, so we need an additional check before running that condition, to see whether we're in nodejs, or in browser.

I can confirm that if I replace this line:
if (imgData instanceof ImageData) {
with this line:
if (!isNodeJS && imgData instanceof ImageData) {

everything seems to be working fine

[soadzoor]

Created a PR with a fix: #19181

[Snuffleupagus]

Please refer to PR #19015, and in particular commit 9b62f2e.

Note that only the legacy-build is supported in Node.js, as clearly mentioned in the FAQ: https://github.com/mozilla/pdf.js/wiki/Frequently-Asked-Questions#faq-support
Unless the correct build is being used, none of the necessary polyfills are loaded and various things can/will break. Hence you need to change https://github.com/soadzoor/node-pdfjs/blob/8411d8aed2118cb01d36a078344903d2f754f90d/index.js#L2 into

import { getDocument } from "pdfjs-dist/legacy/build/pdf.mjs";