Does not work in BGSW using Plasmo framework

[Fiattarone]

Environment

Framework: Plasmo 0.84.0 Client side Chrome Browser Extension

Reproduction

Can be reproduced by creating a BGSW in the Plasmo framework and importing unpdf. Error message is:

🔴 ERROR | Build failed. To debug, run plasmo dev --verbose. 🔴 ERROR | Failed to resolve 'unpdf/pdfjs' from './node_modules/.pnpm/unpdf@0.10.0/node_modules/unpdf/dist/index.mjs'

Describe the bug

Bug is as aforementioned: unpdf seems to be looking for a pdfjs dependency that is inaccessible.

Additional context

No response

Logs

No response

[johannschopplich]

Mmh, interesting. Which bundler does Plasmo use? unpdf provides a sub path export unpdf/pdfjs:

https://github.com/unjs/unpdf/blob/f640d4de5999ddbeedb731b8580a1e7e1cfddb80/package.json#L34

Seems to me more like a Plasmo issue than unpdf. I have tested unpdf with esbuild, Rollup and more, which all correctly bundle unpdf/pdfjs.

Could you please provide a reproducible example?

[Fiattarone]

Bundler used is https://parceljs.org/ I believe... I know that I couldn't get plasmo to work with pdfjs either, so this very well could be a plasmo issue.

Will drop an example in here when I get a moment, sorry about not including that the first round.

My current workaround is to use unpdf on my proxy (vercel) server (normally used for other things) but this is really just to continue development, it would be really not-prime to handle everyone's PDF shenanigans when they could be doing it themselves on the client side.

[Fiattarone]

Hey there, sorry for taking so long!

https://github.com/Fiattarone/unpdf-plasmo-example under core/test.ts is where I put it

Or, even easier to reproduce with a one-liner:

git clone git@github.com:Fiattarone/unpdf-plasmo-example.git  --recurse-submodules &&
cd unpdf-plasmo-example &&
pnpm install &&
pnpm dev

fails upon compiling

If this is more of an issue with plasmo, I'll take it up with them--just let me know!

[johannschopplich]

Hi @Fiattarone, thanks for the reproduction. I tried to import the pdfjs subpath export, but somehow the Parcel bundler doesn't seem to resolve the dependency. A quick look at Parcel's dependency resolution docs didn't help.

Even if we point to the PDF.js source file, the bundler fails to locate it:

import { configureUnPDF, extractText } from "unpdf"

configureUnPDF({
  pdfjs: () => import("unpdf/dist/pdfjs.mjs"),
});

Sorry, but at the moment, I don't have a fix for the Plasmo framework. Noted that Vite (using Rollup) and esbuild correctly resolves the import…