keyDown.jsx

  /**
   * Handler for keyDown
   * @description if ESC key is clicked close modal
   * @param {object} e - SyntheticKeyboardEvent
   * @return {undefined} undefined
   */
  _handleKeyDown: function (e) {
    if (e.keyCode === 27) {
      this._handleModalClose();
    }
  },
  
  ...
  
    /**
   * Render
   * @returns {ReactElement} react element
   */
  render: function () {
    return (
      <div className="site-header" onKeyDown={this._handleKeyDown}>
          <header role='banner'>
            {this.props.children}
          </header>
      </div>
    );
  }