foop
Version:
interfaces that describe their intentions.
32 lines (26 loc) • 799 B
JavaScript
const size = require('../../util/size')
/**
* A specialized version of `reduceRight` for arrays.
*
* @since 5.0.0-beta.7.2
*
* @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 last element of `array` as
* the initial value.
* @return {*} Returns the accumulated value.
*/
function arrayReduceRight(array, iteratee, accumulator, initAccum) {
let length = size(array)
// setup
if (initAccum && length) {
accumulator = array[--length]
}
// iterate backwards
while (length--) {
accumulator = iteratee(accumulator, array[length], length, array)
}
return accumulator
}
module.exports = arrayReduceRight