Required PDF.js library is not installed when using composer

This issue and https://www.drupal.org/project/pdf/issues/3365327 📌 Use composer to handle the dependency on pdf.js Active seem to addressing the same problem. Perhaps the solution it that issue can be implemented.

For those that ended up here for the reason I did, the instructions for #15 worked and in on par with usual practices.

albert volkman → made their first commit to this issue’s fork.

Steps for add pdf.js:
1. add repository in your root composer.json:

"repositories": [
        ..................................
        {
            "type": "package",
            "package": {
                "name": "mozilla/pdf.js",
                "version": "5.1.91",
                "type": "drupal-library",
                "dist": {
                    "url": "https://github.com/mozilla/pdf.js/releases/download/v5.1.91/pdfjs-5.1.91-dist.zip",
                    "type": "zip"
                }
            }
        }
    ],

2. Add "mozilla/pdf.js": "^5.1", in require section

"require": {
....................................
  "mozilla/pdf.js": "5.1.91"
}

3. run 'composer require mozilla/pdf.js'

Any reason not to merge what we've got? It should be set up to load the library automatically, right?

Having the module define the asset repo as a package in composer.json and requiring it should work.

If not, the instructions to set up composer.json are working fine and could just be pasted into a README.