foop
Version:
interfaces that describe their intentions.
25 lines (23 loc) • 2.7 kB
JavaScript
/**
* The base implementation of `reduce` and `reduceRight` which iterates
* over `collection` using `eachFunc`.
*
* @private
* @param {Array|Object} collection The collection to iterate over.
* @param {Function} iteratee The function invoked per iteration.
* @param {*} accumulator The initial value.
* @param {boolean} initAccum Specify using the first or last element of
* `collection` as the initial value.
* @param {Function} eachFunc The function to iterate over `collection`.
* @returns {*} Returns the accumulated value.
*/
function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
eachFunc(collection, function (value, index, collection) {
accumulator = initAccum
? (initAccum = false, value)
: iteratee(accumulator, value, index, collection)
})
return accumulator
}
module.exports = baseReduce
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