blob: cbea7ad8f6bc63f0b9c5710b942852f9041edf73 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
// API
module.exports = state;
/**
* Creates initial state object
* for iteration over list
*
* @param {array|object} list - list to iterate over
* @param {function|null} sortMethod - function to use for keys sort,
* or `null` to keep them as is
* @returns {object} - initial state object
*/
function state(list, sortMethod)
{
var isNamedList = !Array.isArray(list)
, initState =
{
index : 0,
keyedList: isNamedList || sortMethod ? Object.keys(list) : null,
jobs : {},
results : isNamedList ? {} : [],
size : isNamedList ? Object.keys(list).length : list.length
}
;
if (sortMethod)
{
// sort array keys based on it's values
// sort object's keys just on own merit
initState.keyedList.sort(isNamedList ? sortMethod : function(a, b)
{
return sortMethod(list[a], list[b]);
});
}
return initState;
}
|
