text: export const ADMIN_API = global.wagtailConfig.ADMIN_API;
  export const STRINGS = global.wagtailConfig.STRINGS;
  export const ADMIN_URLS = global.wagtailConfig.ADMIN_URLS;
  
  // Maximum number of pages to load inside the explorer menu.
  export const MAX_EXPLORER_PAGES = 200;
  
  export const IS_IE11 = !global.ActiveXObject && 'ActiveXObject' in global;