how to install legacy build of pdfjs-dist by npm in react project?

[sujoys12]

Promise.withResovers is breaking in older browsers. So I want to use the legacy build. But I have not seen any guide to install that through npm?

[nicolo-ribaudo]

It's in the same package, inside pdfja-dist/legacy

[ak37165]

I am trying to use the legacy build via typescript like so:

import {
	GlobalWorkerOptions,
	OnProgressParameters,
	PDFDocumentProxy,
	getDocument,
} from 'pdfjs-dist/legacy';

I get "Could not find a declaration file for module 'pdfjs-dist/legacy'" Is some .d.ts file missing?
The above import works if I import from 'pdfjs-dist' without the legacy suffix.

[ritschwumm]

this seems to be working:

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

[ak37165]

Thanks for sharing. Unfortunately even the legacy build does not work on iPhones older than 3 years (and a lot of people have those since iPhones don't break that quickly). So we had to go with an even older version of PDfjs and then one ends up having to include it via CDN instead of an npm package.

[ashispavan]

Could you please share the older version number that you ended up using? I am facing the same issue and was looking for an older version that works on older iPhones.

[ak37165]

We used 2.9.359.

That is not a sustainable strategy though - what we are thinking is using the latest version and on browsers where it does not work, display the file as images instead of PDF. The server will generate the images, using something like pdf2image. There won't be much ability to zoom for such browsers.

[ashispavan]

Ah I see. This helps. Thank you!