--- /dev/null
+/**
+ * A specialized version of `baseAggregator` for arrays.
+ *
+ * @private
+ * @param {Array} array The array to iterate over.
+ * @param {Function} setter The function to set `accumulator` values.
+ * @param {Function} iteratee The iteratee to transform keys.
+ * @param {Object} accumulator The initial aggregated object.
+ * @returns {Function} Returns `accumulator`.
+ */
+function arrayAggregator(array, setter, iteratee, accumulator) {
+ var index = -1,
+ length = array.length;
+
+ while (++index < length) {
+ var value = array[index];
+ setter(accumulator, value, iteratee(value), array);
+ }
+ return accumulator;
+}
+
+module.exports = arrayAggregator;