Server Error TypeError: url.replace is not a function

[ashwinj984]

Before you start - checklist

• I followed instructions in documentation written for my React-PDF version
• I have checked if this bug is not already reported
• I have checked if an issue is not listed in Known issues
• If I have a problem with PDF rendering, I checked if my PDF renders properly in PDF.js demo

Description

import { useState } from 'react';
import { Document, Page, pdfjs } from 'react-pdf';
import { Logger } from '@/lib/logger';
import { Screens } from '@/pages/constants';

import 'react-pdf/dist/esm/Page/AnnotationLayer.css';
import 'react-pdf/dist/esm/Page/TextLayer.css';
//pdfjs.GlobalWorkerOptions.workerSrc = `https://unpkg.com/pdfjs-dist@${pdfjs.version}/build/pdf.worker.min.js`;

pdfjs.GlobalWorkerOptions.workerSrc = new URL(
  'pdfjs-dist/build/pdf.worker.min.js',
  import.meta.url
).toString();

Steps to reproduce

Simply I have just added the code and when I am refreshing my development environment it is throwing this error.

Expected behavior

As per the documentation this code should work but it is throwing error.

pdfjs.GlobalWorkerOptions.workerSrc = new URL(
  'pdfjs-dist/build/pdf.worker.min.js',
  import.meta.url
).toString();

Actual behavior

It should not throw the error as it does not when we use cdn.

Additional information

No response

Environment

• Browser (if applicable):
• React-PDF version:
• React version:
• Webpack version (if applicable):

[vdo9]

I am having an issue with setting up the web worker as well when testing in Jest. I receive this error:
SyntaxError: Cannot use 'import.meta' outside a module

[wojtekmaj]

@BlankTurbo You didn't give me too many info to work with, but if I have to guess, you're trying to render React-PDF on the server side which doesn't make a lot of sense, because you can't stream canvas over the network anyway.

[wojtekmaj]

@vdo9 If you're using ESM modules, I'd discourage you from using Jest altogether. It has numerous problems with ESM modules handling.

Personally, I was not able to make it work well for my use case and have decided to move on to more modern Vitest. Migrating multiple repositories took me less time than trying to debug Jest bugs in one.

Alternatively, you could:

• Try to make Jest work with ESM modules by following these instructions
• Get rid of import.meta.url - e.g. defining workerSrc as an absolute URL and using copy-webpack-plugin to manually put the worker file to a public directory in your project
• Try your luck with babel-plugin-transform-import-meta

[ashwinj984]

@BlankTurbo You didn't give me too many info to work with, but if I have to guess, you're trying to render React-PDF on the server side which doesn't make a lot of sense, because you can't stream canvas over the network anyway.

@wojtekmaj I am using a monorepo, my node_modules where my react-pdf and pdfjs-dist file are, not in the folder in which I am working, When I am using a cdn it is working completely fine but when I am approaching it as per the documentation method to use it from my node_modules rather than using the cdn then the props which I am passing in the new URL(x, y) are not able to make a proper url out of it, and we are giving it to a string it is throwing the error that url.replace is not a function.

I wanted to basically know if there can be a different approach to this?

As you correctly mentioned that we can't stream canvas over the network anyway, but we somehow send images and svg files right over the server and user it in out web-app, So if there is any way to do the same with the 'pdfjs-dist/build/pdf.worker.min.js' file.

Browser : Chrome Version 114.0.5735.198 (Official Build) (arm64)
React-pdf version : 7.1.2
React-version: 18.1.0

My 'pdfjs-dist/build/pdf.worker.min.js' is relatively at this ../../../../../node_modules/pdfjs-dist/build/pdf.worker.min.js position from the place of import.meta.url. When I am using this, it is throwing me Warning: Setting up fake worker..
If I am trying to copy the file 'pdfjs-dist/build/pdf.worker.min.js' and use it my repo it is throwing again the same warning.

[wojtekmaj]

If you manually copied the file over and it's still giving you Warning: Setting up fake worker… message it means that the path you specified was not correct. Check the Network tab in your browser to see where the pdf.worker.min.js file is being requested from, compare to where it actually is, and debug it this way.

[ashwinj984]

If you manually copied the file over and it's still giving you Warning: Setting up fake worker… message it means that the path you specified was not correct. Check the Network tab in your browser to see where the pdf.worker.min.js file is being requested from, compare to where it actually is, and debug it this way.

Found out the solution using this approach Thanks a lot!

[ashwinj984]

I have one more issue which I faced recently not that big, that I will raise it in another issue, tagging it here only.

When I was using react-pdf 6.2.2 version my code was working perfectly fine, recently when I updated my version to 7.1.2 it is not working on deployment. What error it is showing on AWS Amplify is Error is: build size exceeding amplify supported size 200MB.. Is there any bigger change in react-pdf 7.1.2 that this error is occurring because it does not use to occur before? Is there any way that I update my version too and this error does not occur too?

[wojtekmaj]

Seems related to #1504.

The direct cause appears to be pdfjs-dist update. These are always fun.

[praveengoswami1996]

If you manually copied the file over and it's still giving you Warning: Setting up fake worker… message it means that the path you specified was not correct. Check the Network tab in your browser to see where the pdf.worker.min.js file is being requested from, compare to where it actually is, and debug it this way.

Found out the solution using this approach Thanks a lot!

Could you please share the solution, What you did? I am still unable to figure it out. I am also facing the same issue.

[ashwinsquadstack]

If you manually copied the file over and it's still giving you Warning: Setting up fake worker… message it means that the path you specified was not correct. Check the Network tab in your browser to see where the pdf.worker.min.js file is being requested from, compare to where it actually is, and debug it this way.

Found out the solution using this approach Thanks a lot!

Could you please share the solution, What you did? I am still unable to figure it out. I am also facing the same issue.

@praveengoswami1996 Just use the correct file location it will work.

For me when I did it like this
pdfjs.GlobalWorkerOptions.workerSrc = new URL( '../../../../../node_modules/pdfjs-dist/build/pdf.worker.min.js', import.meta.url ).toString();

It worked because the location of my pdf.worker.min.js relative to the file where I was adding it was '../../../../../node_modules/pdfjs-dist/build/pdf.worker.min.js' this.

For me it worked like this because I use a monorepo and node_modules are hoisted and they were not inside my root folder. So do check the location of file pdf.worker.min.js.

Try this your issue should get resolved.

[praveengoswami1996]

If you manually copied the file over and it's still giving you Warning: Setting up fake worker… message it means that the path you specified was not correct. Check the Network tab in your browser to see where the pdf.worker.min.js file is being requested from, compare to where it actually is, and debug it this way.

Found out the solution using this approach Thanks a lot!

Could you please share the solution, What you did? I am still unable to figure it out. I am also facing the same issue.

@praveengoswami1996 Just use the correct file location it will work.

For me when I did it like this pdfjs.GlobalWorkerOptions.workerSrc = new URL( '../../../../../node_modules/pdfjs-dist/build/pdf.worker.min.js', import.meta.url ).toString();

It worked because the location of my pdf.worker.min.js relative to the file where I was adding it was '../../../../../node_modules/pdfjs-dist/build/pdf.worker.min.js' this.

For me it worked like this because I use a monorepo and node_modules are hoisted and they were not inside my root folder. So do check the location of file pdf.worker.min.js.

Try this your issue should get resolved.

Thanks Ashwin!! I appreciate your response. It perfectly worked for me. Thanks alot.

[muboshers]

useEffect(() => { pdfjs.GlobalWorkerOptions.workerSrc = new URL( 'pdfjs-dist/build/pdf.worker.js', import.meta.url, ).toString(); }, []);

problem statement like this because next js can not render outside of i just wrap pdf.js config in app tsx like this and problem fix

[wojtekmaj]

A better idea than useEffect appears to be:

if (typeof window !== 'undefined') {
  pdfjs.GlobalWorkerOptions.workerSrc = new URL(
    'pdfjs-dist/build/pdf.worker.min.js',
    import.meta.url,
  ).toString();
}

This would prevent the code from running on the server, while still running before render on the client.