Function arrayReduce

test/babel.js:27885–27896

* A specialized version of `_.reduce` for arrays without support for * iteratee shorthands. * * @private * @param {Array} [array] The array to iterate over. * @param {Function} iteratee The function invoked per iteration. * @param {*} [accumulator] The initial value. * @param {boolean}

(array, iteratee, accumulator, initAccum)

	 * @returns {*} Returns the accumulated value.
	 */
	function arrayReduce(array, iteratee, accumulator, initAccum) {
	  var index = -1,
	      length = array == null ? 0 : array.length;

	  if (initAccum && length) {
	    accumulator = array[++index];
	  }
	  while (++index < length) {
	    accumulator = iteratee(accumulator, array[index], index, array);
	  }
	  return accumulator;
	}

	module.exports = arrayReduce;