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x/rambda/source/filter.js

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import {_isArray} from './_internals/_isArray'
export function filterObject(predicate, obj) { const willReturn = {}
for (const prop in obj) { if (predicate(obj[prop], prop, obj)) { willReturn[prop] = obj[prop] } }
return willReturn}
export function filterArray(predicate, list, indexed = false) { let index = 0 const len = list.length const willReturn = []
while (index < len) { const predicateResult = indexed ? predicate(list[index], index) : predicate(list[index]) if (predicateResult) { willReturn.push(list[index]) }
index++ }
return willReturn}
export function filter(predicate, iterable) { if (arguments.length === 1) return _iterable => filter(predicate, _iterable) if (!iterable) { throw new Error('Incorrect iterable input') }
if (_isArray(iterable)) return filterArray(predicate, iterable, false)
return filterObject(predicate, iterable)}