getRange(cfi, ignoreClass) {
    var _cfi = new src_epubcfi["a" /* default */](cfi);

    var found = this.manager.visible().filter(function (view) {
      if (_cfi.spinePos === view.index) return true;
    }); // Should only every return 1 item

    if (found.length) {
      return found[0].contents.range(_cfi, ignoreClass);
    }
  }
Get a Range from a Visible CFI
@param  {string} cfi EpubCfi String
@param  {string} ignoreClass
@return {range}