foop
Version:
interfaces that describe their intentions.
45 lines (38 loc) • 4.04 kB
JavaScript
var isArray = require('../../is/array')
var objOrArrayKeys = require('../../util/keysObjOrArray')
var curry = require('../../fp/curry')
/**
* Creates an array of values by running each property of `object`
* or index of `array` thru `iteratee`.
* The iteratee is invoked with three arguments: (value, key, object).
*
* @alias mapAnyVals
* @memberOf loop
* @since 5.0.0
* @category Object
*
* @param {Object|Array} obj The object or array to iterate over.
* @param {Function} predicate The function invoked per iteration.
* @param {Object} [result = {}] initial value, accumulated, output
* @return {Array|Object} Returns the new mapped array or object
*
* @example
*
* const square = n => n * n
* map({ 'a': 4, 'b': 8 }, square)
* //=> [16, 64] (iteration order is not guaranteed)
*
*/
function mapObjOrArrayVals(obj, iteratee, result) {
if ( result === void 0 ) result = {};
var isArrayObj = isArray(obj)
var keys = objOrArrayKeys(obj)
for (var index = 0; index < keys.length; index++) {
var key = isArrayObj ? index : keys[index]
var value = obj[key]
result[key] = iteratee(value, key, obj)
}
return result
}
module.exports = curry(2, mapObjOrArrayVals)
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