npm i @uiw/react-markdown-editor

import MarkdownEditor from '@uiw/react-markdown-editor';
import React from 'react';
import ReactDOM from 'react-dom';

const Dome = () => (
  <MarkdownEditor
    value={this.state.markdown}
    onChange={this.updateMarkdown}
  />
);

import MarkdownEditor from '@uiw/react-markdown-editor';
import React from 'react';
import ReactDOM from 'react-dom';


class App extends React.Component {
  constructor() {
    super();
    this.state = {
      markdown: '# This is a H1  \n## This is a H2  \n###### This is a H6',
    };
    this.updateMarkdown = this.updateMarkdown.bind(this);
  }

  updateMarkdown(editor, data, value) {
    this.setState({ markdown: value });
  }

  render() {
    return (
      <MarkdownEditor
        value={this.state.markdown}
        onChange={this.updateMarkdown}
      />
    );
  }
}

ReactDOM.render(
  <App />,
  document.getElementById('app')
);

npm run dev
npm run type-check:watch
npm run doc