chill-bundles/src/Bundle/ChillMainBundle/Resources/public/module/ckeditor5/index.js

import ClassicEditorBase from '@ckeditor/ckeditor5-editor-classic/src/classiceditor';
import EssentialsPlugin from '@ckeditor/ckeditor5-essentials/src/essentials';
import MarkdownPlugin from '@ckeditor/ckeditor5-markdown-gfm/src/markdown';
import BoldPlugin from '@ckeditor/ckeditor5-basic-styles/src/bold';
import ItalicPlugin from '@ckeditor/ckeditor5-basic-styles/src/italic';
import BlockQuotePlugin from '@ckeditor/ckeditor5-block-quote/src/blockquote';
import HeadingPlugin from '@ckeditor/ckeditor5-heading/src/heading';
import LinkPlugin from '@ckeditor/ckeditor5-link/src/link';
import ListPlugin from '@ckeditor/ckeditor5-list/src/list';
import ParagraphPlugin from '@ckeditor/ckeditor5-paragraph/src/paragraph';
import "./index.scss";

export default class ClassicEditor extends ClassicEditorBase {}

ClassicEditor.builtinPlugins = [
    EssentialsPlugin,
    MarkdownPlugin,
    BoldPlugin,
    ItalicPlugin,
    BlockQuotePlugin,
    HeadingPlugin,
    LinkPlugin,
    ListPlugin,
    ParagraphPlugin
];

ClassicEditor.defaultConfig = {
    toolbar: {
        items: [
            'heading',
            '|',
            'bold',
            'italic',
            'link',
            'bulletedList',
            'numberedList',
            'blockQuote',
            'undo',
            'redo'
        ]
    },
    language: 'fr'
};


let Fields = [];
Fields.push.apply(Fields, document.querySelectorAll('textarea[ckeditor]'));
// enable for custom fields
//Fields.push.apply(Fields, document.querySelectorAll('.cf-fields textarea'));

Fields.forEach(function(field) {
    ClassicEditor
        .create( field )
        .then( editor => {
            //console.log( 'CkEditor was initialized', editor );
        })
        .catch( error => {
            console.error( error.stack );
        })
    ;
});