Issue while copying a specific pdf

[mlecoq]

Hi,

I have an issue with the following pdf :
https://mle-sandbox.s3.amazonaws.com/1526.pdf

When I append it to an existing pdf, it fails due to an undefined value.

The code I use to append it

    const firstPlan = await PDFDocument.load(fs.readFileSync(`${__dirname}/pdf/firstPlan.pdf`), {
        parseSpeed: ParseSpeeds.Fastest
    });

  
        const doc = await PDFDocument.load(`${__dirname}/pdf/unsupportedPlan.pdf`, {
            parseSpeed: ParseSpeeds.Fastest
        });

        const pages = await firstPlan.copyPages(doc, [...doc.getPages().keys()]);

        for (let page of pages) {
            firstPlan.addPage(page);
        }

        fs.writeFileSync(`${__dirname}/results/result.pdf`, await firstPlan.save());

Making some modifications in the lib fix the issue. I will make a pull request soon

[Hopding]

Version 1.1.1 is now published. It contains the fix for this issue. The full release notes are available here.

You can install this new version with npm:

npm install pdf-lib@1.1.1

It's also available on unpkg:

• https://unpkg.com/pdf-lib@1.1.1/dist/pdf-lib.js
• https://unpkg.com/pdf-lib@1.1.1/dist/pdf-lib.min.js