text: export const SET_NAV_BUTTON = 'SET_NAV_BUTTON';
  export const NAV_BUTTON_LEFT = 'NAV_BUTTON_LEFT';
  export const NAV_BUTTON_RIGHT = 'NAV_BUTTON_RIGHT';
  
  function setNavButton(side, content) {
    // side should be one of NAV_BUTTON_RIGHT or NAV_BUTTON_LEFT
    return {
      type: SET_NAV_BUTTON,
      payload: { content, side },
    };
  }
  
  export default setNavButton;
  