text: ;(function() {
      "use strict";
  
      if (typeof Array.prototype.findIndex !== "function") {
          Array.prototype.findIndex = function(predicate, thisArg) {
              if (this === null) {
                  throw new TypeError('Cannot read property \'findIndex\' of null');
              }
  
              if (typeof predicate !== "function") {
                  throw new TypeError(typeof predicate + ' is not a function');
              }
  
              var arrLength = this.length;
              var index = -1;
  
              for (var i = 0; i < arrLength; i++) {
                  if (predicate.call(thisArg, this[i], i, this)) {
                      index = i;
                      break;
                  }
              }
  
              return index;
          };
      }
  })();