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27 lines
787 B
27 lines
787 B
4 years ago
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/**
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* A specialized version of `_.reduce` for arrays without support for
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* iteratee shorthands.
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*
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* @private
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* @param {Array} [array] The array to iterate over.
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* @param {Function} iteratee The function invoked per iteration.
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* @param {*} [accumulator] The initial value.
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* @param {boolean} [initAccum] Specify using the first element of `array` as
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* the initial value.
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* @returns {*} Returns the accumulated value.
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*/
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function arrayReduce(array, iteratee, accumulator, initAccum) {
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var index = -1,
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length = array == null ? 0 : array.length;
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if (initAccum && length) {
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accumulator = array[++index];
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}
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while (++index < length) {
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accumulator = iteratee(accumulator, array[index], index, array);
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}
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return accumulator;
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}
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module.exports = arrayReduce;
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