'a'

mh-two-thousand-and-two

2024-04-12 44d2c92345cd156a59fc327b3060292a282d2893

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
38
var optimizeCb = require('./optimizeCb');
var isArrLike = require('./isArrLike');
var isUndef = require('./isUndef');
var keys = require('./keys');
exports = createReduce(1);
exports.create = createReduce;
function createReduce(dir) {
    return function(obj, iterator, initial, ctx) {
        iterator = optimizeCb(iterator, ctx);
        var i, len, key;
        if (isArrLike(obj)) {
            len = obj.length;
            i = dir > 0 ? 0 : len - 1;
            if (isUndef(initial)) {
                initial = obj[i];
                i += dir;
            }
            for (; i < len && i >= 0; i += dir) {
                initial = iterator(initial, obj[i], i, obj);
            }
        } else {
            var _keys = keys(obj);
            len = _keys.length;
            i = dir > 0 ? 0 : len - 1;
            if (isUndef(initial)) {
                initial = obj[_keys[i]];
                i += dir;
            }
            for (; i < len && i >= 0; i += dir) {
                key = _keys[i];
                initial = iterator(initial, obj[key], key, obj);
            }
        }
        return initial;
    };
}
 
module.exports = exports;