Consolidate aggregate modules.

.internal/arrayAggregator.js

@@ -1,22 +0,0 @@
-/**
- * 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) {
-  let index = -1;
-  const length = array == null ? 0 : array.length;
-
-  while (++index < length) {
-    const value = array[index];
-    setter(accumulator, value, iteratee(value), array);
-  }
-  return accumulator;
-}
-
-export default arrayAggregator;

.internal/baseAggregator.js

@@ -1,21 +0,0 @@
-import baseEach from './baseEach.js';
-
-/**
- * Aggregates elements of `collection` on `accumulator` with keys transformed
- * by `iteratee` and values set by `setter`.
- *
- * @private
- * @param {Array|Object} collection The collection 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 baseAggregator(collection, setter, iteratee, accumulator) {
-  baseEach(collection, (value, key, collection) => {
-    setter(accumulator, value, iteratee(value), collection);
-  });
-  return accumulator;
-}
-
-export default baseAggregator;

.internal/createAggregator.js

@@ -1,20 +0,0 @@
-import arrayAggregator from './.internal/arrayAggregator.js';
-import baseAggregator from './.internal/baseAggregator.js';
-
-/**
- * Creates a function like `groupBy`.
- *
- * @private
- * @param {Function} setter The function to set accumulator values.
- * @param {Function} [initializer] The accumulator object initializer.
- * @returns {Function} Returns the new aggregator function.
- */
-function createAggregator(setter, initializer) {
-  return (collection, iteratee) => {
-    const func = Array.isArray(collection) ? arrayAggregator : baseAggregator;
-    const accumulator = initializer ? initializer() : {};
-    return func(collection, setter, iteratee, accumulator);
-  };
-}
-
-export default createAggregator;