Can't get required libraries to load

I had the same issue and in order to better track dependencies I decided to use the Composer Merge-Plugin, this is being explained on the module's README as well as the main module page and you will require and enable this plugin.

Then you'll add this to your composer.json:

"extra": { 
       "merge-plugin": {
            "include": [
                "docroot/modules/contrib/ckeditor_codemirror/composer.libraries.json"
            ]
        }
}

And then require the module, this will pull the module's dependencies for you.

I don't get it, should the libraries already been compiled?

I get errors because this file is not found:
/libraries/ckeditor5-source-editing-codemirror/build/source-editing-codemirror.js

But the library doesn't have the build folder...
https://registry.npmjs.org/@cdubz/ckeditor5-source-editing-codemirror/-/...

Yeah, this is happening to me as well. The library folders are present in docroot/libraries, and they were added automatically by composer thanks to the merge plugin, but the status report says the module can't find either of them.

Add me to this list. merge-plugin is installed, but even tried to add the libs manually. Nothing seems to work.

None of the above has fixed the issue for me (D10.1.7). However, I notice that in ckeditor_codemirror.libraries.yml it references "/libraries/ckeditor5-source-editing-codemirror/build/source-editing-codemirror.js", however, in libraries/ckeditor5-source-editing-codemirror/build, the file name is sourceeditingcodemirror.js (no hypens.) Is this a mismatch or is it "mapped" somewhere else in the code?

@Comentario#6pbaczewski same problem and also found the same thing as you

i'm facing the same issue here, followed instructions and placed ckeditor5-source-editing-codemirror folder in the libraries folder. But still getting the error on the Status report page

@bram.velthoven You must necessarily use composer for it to work

@Nelo_Drup Thx for the input, but i've already tried that. It seems that it needs a build folder with assosciated files but that is not found in the repository. Does anyone have a better clue of this? Thanks in regards.

@bram.velthoven Hello, you must look for how to use composer merge and I took the following code from the instructions:

"merge-plugin": {
"include": [
"{DOCROOT}/modules/contrib/ckeditor_codemirror/composer.libraries.json"
]
},

@Nelo_Drup, Thank you. After adding that piece in the extra section of composer i got the packages installed properly.