npm i @ckeditor/ckeditor5-react
npm i @ckeditor/ckeditor5-build-classic

import React, { useEffect, useRef } from "react";

function Editor({ onChange, editorLoaded, name, value }) {
  const editorRef = useRef();
  const { CKEditor, ClassicEditor } = editorRef.current || {};

  useEffect(() => {
    editorRef.current = {
      CKEditor: require("@ckeditor/ckeditor5-react").CKEditor, // v3+
      ClassicEditor: require("@ckeditor/ckeditor5-build-classic")
    };
  }, []);

  return (
    <div>
      {editorLoaded ? (
        <CKEditor
          type=""
          name={name}
          editor={ClassicEditor}
          data={value}
          onChange={(event, editor) => {
            const data = editor.getData();
            // console.log({ event, editor, data })
            onChange(data);
          }}
        />
      ) : (
        <div>Editor loading</div>
      )}
    </div>
  );
}

export default Editor;

import React, { useState, useEffect } from "react";
import "./styles.css";
import Editor from "./Editor";

export default function App() {
  const [editorLoaded, setEditorLoaded] = useState(false);
  const [data, setData] = useState("");

  useEffect(() => {
    setEditorLoaded(true);
  }, []);

  return (
    <div className="App">
      <h1>ckEditor 5</h1>

      <Editor
        name="description"
        onChange={(data) => {
          setData(data);
        }}
        editorLoaded={editorLoaded}
      />

      {JSON.stringify(data)}
    </div>
  );
}