@ckeditor/ckeditor5-table
should be already in the node_modules folder.tools/webpack/plugins/custom/ckeditor/ckeditor-table.js
window.TableEditor = require('@ckeditor/ckeditor5-table/build/table.js');
Uncaught ReferenceError: CKEditor5 is not defined
CKEditor5 is not defined
error should be gone.window.TableEditor = require('@ckeditor/ckeditor5-table');