Namespace: reduce

just.reduce(object, fn, accumulator, thisArg)

Same as Array.prototype.reduce, but for the own enumerable properties of object, and with an extra param (thisArg).

Name	Type	Description
`object`	object	The target object.
`fn`	function	The transform function. It's called with the same arguments as the `Array.prototype.reduce` function.
`accumulator`	Any	The initial value for the accumulator.
`thisArg`	Any	`this` argument for `fn`.

accumulator

Example 1: Get object keys (when Object.keys is unavailable).

just.reduce({'a': 1}, function (keys, value, key, object) { return keys.concat(key); }, []);
// > ['a']