NextJS + CKEditor5 with CodeBlock plugin fails (global CSS import error)

Question

I am trying to use CKEditor5 in NextJS. Here are my package versions:

"@ckeditor/ckeditor5-build-classic": "^22.0.0",
"@ckeditor/ckeditor5-code-block": "^22.0.0",
"@ckeditor/ckeditor5-react": "^2.1.0",
"next": "9.5.1",

Related part of my component is:

import CKEditor from '@ckeditor/ckeditor5-react';
import ClassicEditor from '@ckeditor/ckeditor5-build-classic';
import CodeBlock from '@ckeditor/ckeditor5-code-block/src/codeblock';

const editorConfig = {
  toolbar: ['heading', '|', 'bold', 'italic', 'link', 'bulletedList', 'numberedList', 'blockQuote', 'codeBlock'],
  plugins: [CodeBlock],
  codeBlock: {
    languages: [
      { language: 'plaintext', label: 'Plain text' },
      { language: 'c', label: 'C' },
      { language: 'cs', label: 'C#' },
      { language: 'cpp', label: 'C++' },
      { language: 'css', label: 'CSS' },
      { language: 'diff', label: 'Diff' },
      { language: 'html', label: 'HTML' },
      { language: 'java', label: 'Java' },
      { language: 'javascript', label: 'JavaScript' },
      { language: 'php', label: 'PHP' },
      { language: 'python', label: 'Python' },
      { language: 'ruby', label: 'Ruby' },
      { language: 'typescript', label: 'TypeScript' },
      { language: 'xml', label: 'XML' }
    ]
  }
};

export default function AddForm() {
  return (
    <CKEditor
      editor={ClassicEditor}
      config={editorConfig}
    />
  )
}

And I am getting the following error.

./node_modules/@ckeditor/ckeditor5-code-block/theme/codeblock.css
Global CSS cannot be imported from within node_modules.
Read more: https://err.sh/next.js/css-npm
Location: node_modules/@ckeditor/ckeditor5-code-block/src/codeblockui.js

CKEditor CodeBlock plugin trying to import global CSS in package as I see. Here is one example in node_modules package in codeblockui.js:

import '../theme/codeblock.css';

How can I solve this issue?

Answer 1

The global CSS import error problem is addressed from Next.js 13. https://github.com/vercel/next.js/discussions/27953#discussioncomment-3978605