Function findIndex

test-app/public/sinon.js:17876–17886

* This method is like `_.find` except that it returns the index of the first * element `predicate` returns truthy for instead of the element itself. * * @static * @memberOf _ * @since 1.1.0 * @category Array * @param {Array} array The ar

(array, predicate, fromIndex)

         * // => 2
         */
        function findIndex(array, predicate, fromIndex) {
          var length = array == null ? 0 : array.length;
          if (!length) {
            return -1;
          }
          var index = fromIndex == null ? 0 : toInteger(fromIndex);
          if (index < 0) {
            index = nativeMax(length + index, 0);
          }
          return baseFindIndex(array, getIteratee(predicate, 3), index);
        }
    
        /**
         * This method is like `_.findIndex` except that it iterates over elements