forked from jonschlinkert/clone-deep
-
Notifications
You must be signed in to change notification settings - Fork 0
/
index.js
55 lines (47 loc) · 1.01 KB
/
index.js
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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
'use strict';
/**
* Module dependenices
*/
var isObject = require('is-plain-object');
var clone = require('shallow-clone');
var typeOf = require('kind-of');
var forOwn = require('for-own');
/**
* Recursively clone native types.
*/
function cloneDeep(val, instanceClone) {
switch (typeOf(val)) {
case 'object':
return cloneObjectDeep(val, instanceClone);
case 'array':
return cloneArrayDeep(val, instanceClone);
default: {
return clone(val);
}
}
}
function cloneObjectDeep(obj, instanceClone) {
if (isObject(obj)) {
var res = {};
forOwn(obj, function(obj, key) {
this[key] = cloneDeep(obj, instanceClone);
}, res);
return res;
} else if (instanceClone) {
return instanceClone(obj);
} else {
return obj;
}
}
function cloneArrayDeep(arr, instanceClone) {
var len = arr.length, res = [];
var i = -1;
while (++i < len) {
res[i] = cloneDeep(arr[i], instanceClone);
}
return res;
}
/**
* Expose `cloneDeep`
*/
module.exports = cloneDeep;