1
|
var assignValue = require('./_assignValue'),
|
2
|
baseAssignValue = require('./_baseAssignValue');
|
3
|
|
4
|
/**
|
5
|
* Copies properties of `source` to `object`.
|
6
|
*
|
7
|
* @private
|
8
|
* @param {Object} source The object to copy properties from.
|
9
|
* @param {Array} props The property identifiers to copy.
|
10
|
* @param {Object} [object={}] The object to copy properties to.
|
11
|
* @param {Function} [customizer] The function to customize copied values.
|
12
|
* @returns {Object} Returns `object`.
|
13
|
*/
|
14
|
function copyObject(source, props, object, customizer) {
|
15
|
var isNew = !object;
|
16
|
object || (object = {});
|
17
|
|
18
|
var index = -1,
|
19
|
length = props.length;
|
20
|
|
21
|
while (++index < length) {
|
22
|
var key = props[index];
|
23
|
|
24
|
var newValue = customizer
|
25
|
? customizer(object[key], source[key], key, object, source)
|
26
|
: undefined;
|
27
|
|
28
|
if (newValue === undefined) {
|
29
|
newValue = source[key];
|
30
|
}
|
31
|
if (isNew) {
|
32
|
baseAssignValue(object, key, newValue);
|
33
|
} else {
|
34
|
assignValue(object, key, newValue);
|
35
|
}
|
36
|
}
|
37
|
return object;
|
38
|
}
|
39
|
|
40
|
module.exports = copyObject;
|