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/**

* 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} [initAccum] Specify using the first element of `array` as

* the initial value.

* @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;