function createFindIndex(fromRight) {
	      return function(array, predicate, thisArg) {
	        if (!(array && array.length)) {
	          return -1;
	        }
	        predicate = getCallback(predicate, thisArg, 3);
	        return baseFindIndex(array, predicate, fromRight);
	      };
	    }
Creates a `_.findIndex` or `_.findLastIndex` function.

@private
@param {boolean} [fromRight] Specify iterating from right to left.
@returns {Function} Returns the new find function.