insomnia/app/ui/components/viewers/response-headers-viewer.js

import React, {PureComponent} from 'react';
import PropTypes from 'prop-types';
import CopyButton from '../base/copy-button';

class ResponseHeadersViewer extends PureComponent {
  render () {
    const {headers} = this.props;

    const headersString = headers.map(
      h => `${h.name}: ${h.value}`
    ).join('\n');

    return (
      <div>
        <table className="table--fancy table--striped">
          <thead>
          <tr>
            <th>Name</th>
            <th>Value</th>
          </tr>
          </thead>
          <tbody>
          {headers.map((h, i) => (
            <tr className="selectable" key={i}>
              <td style={{width: '50%'}} className="force-wrap">{h.name}</td>
              <td style={{width: '50%'}} className="force-wrap">{h.value}</td>
            </tr>
          ))}
          </tbody>
        </table>
        <p className="pad-top">
          <CopyButton
            className="pull-right btn btn--clicky"
            content={headersString}
          />
        </p>
      </div>
    );
  }
}

ResponseHeadersViewer.propTypes = {
  headers: PropTypes.array.isRequired
};

export default ResponseHeadersViewer;