seahub/frontend/src/components/logo.js

import React from 'react';
import PropTypes from 'prop-types';
import { siteRoot, mediaUrl, logoPath, logoWidth, logoHeight, siteTitle } from '../utils/constants'; 

const propTypes = {
  onCloseSidePanel: PropTypes.func.isRequired,
};

class Logo extends React.Component {

  closeSide = () => {
    this.props.onCloseSidePanel();
  }
  
  render() {
    return (
      <div className="top-logo">
        <a href={siteRoot} id="logo">
          <img src={mediaUrl + logoPath} height={logoHeight} width={logoWidth} title={siteTitle} alt="logo" />
        </a>
        <a 
          className="sf2-icon-x1 sf-popover-close side-panel-close action-icon d-md-none"
          onClick={this.closeSide} 
          title="Close" 
          aria-label="Close" 
        >
        </a>
      </div>
    );
  }
}

Logo.propTypes = propTypes;

export default Logo;