ckeditor5 broken

There is an option to disable all functionality on admin pages. Would that solve your issue?

No, as soon as it starts to minify the ckeditor stuff, it breaks. Disabling on admin pages does not help.

Excluding the files listed did not fix the issue for me.

At this moment I have all the following excluded and that works for me:

core/assets/vendor/ckeditor/ckeditor.js
core/assets/vendor/ckeditor/lang/*
core/assets/vendor/ckeditor5/*/*
modules/contrib/insert/js/*
modules/contrib/insert/js/editors/*
modules/contrib/token/js/*
themes/contrib/gin/dist/js/*
core/scripts/js/assets/ckeditor5Files.js
core/scripts/js/ckeditor5-check-plugins.js
core/scripts/js/ckeditor5-types-documentation.js
core/misc/*
core/modules/ckeditor5/*
core/modules/ckeditor5/js/*
core/modules/ckeditor5/js/*/*
core/modules/ckeditor/tests/*
core/modules/color/tests/*
core/modules/locale/tests/*
core/modules/quickedit/js/views/EntityToolbarView.js
core/modules/system/tests/*
core/modules/views/tests/*
core/tests/*
libraries/d3/test/*
libraries/jquery.inputmask/qunit/tests*
libraries/jquery.intl-tel-input/src/spec/tests/*
libraries/jquery.select2/tests/*
sites/default/files/*
vendor/jcalderonzumba/gastonjs/examples/*
vendor/jcalderonzumba/gastonjs/tests/*
*-min.js
*.min.js

Here's a screenshot of the console errors I receive on a CKEditor node edit form.

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Confirm that you're using the latest version of https://github.com/matthiasmullie/minify (it's 1.3.73 at this moment in time). If you're not using that version, use composer to update it.

If that doesn't fix it, I would say create an issue at https://github.com/matthiasmullie/minify

I just removed all excluded files and I can confirm it seems to be working now. It might have been a bug in minify.