component.jsx

import Component from 'react-pure-render/component';
import React, {PropTypes} from 'react';
import {Link} from 'react-router';

export default class Header extends Component {

  static propTypes = {
    msg: PropTypes.object.isRequired,
    pathname: PropTypes.string.isRequired,
    viewer: PropTypes.object
  }

  render() {
    const {pathname, msg: {app: {links: msg}}, viewer} = this.props;

    return (
        <header>
            <h1>
              <Link to="/">{msg.home}</Link>
            </h1>
            {pathname
              ? (
                  <ul>
                    <li><Link activeClassName="active" to="/dummy-form">Test form</Link></li>
                    <li><Link activeClassName="active" to="/servis-kotlu">Servis kotlu</Link></li>
                  </ul>
                ) 
              : null}
        </header>
    );
  }
}