talk/plugins/talk-plugin-comment-content/client/components/CommentContent.js

import React from 'react';
import Linkify from 'react-linkify';

const name = 'talk-plugin-comment-content';

const CommentContent = ({comment}) => {
  const textbreaks = comment.body.split('\n');
  return <span className={`${name}-text`}>
    {
      textbreaks.map((line, i) => {
        return (
          <span key={i} className={`${name}-line`}>
            <Linkify properties={{target: '_blank'}}>
              {line.trim()}
            </Linkify>
            {i !== textbreaks.length - 1 && <br className={`${name}-linebreak`}/>}
          </span>
        );
      })
    }
  </span>;
};

export default CommentContent;