The package was moved to the main repository.
This package implements CKEditor 5's core editor architecture — a set of classes and interfaces which glue everything together.
For general introduction see the Overview of CKEditor 5 framework guide and then the Core editor architecture guide.
Additionally, see the @ckeditor/ckeditor5-core package page in CKEditor 5 documentation for even more information.
Licensed under the terms of GNU General Public License Version 2 or later. For full details about the license, please check the LICENSE.md file or https://ckeditor.com/legal/ckeditor-oss-license.