1
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var baseRest = require('./_baseRest'),
|
2
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isIterateeCall = require('./_isIterateeCall');
|
3
|
|
4
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/**
|
5
|
* Creates a function like `_.assign`.
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6
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*
|
7
|
* @private
|
8
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* @param {Function} assigner The function to assign values.
|
9
|
* @returns {Function} Returns the new assigner function.
|
10
|
*/
|
11
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function createAssigner(assigner) {
|
12
|
return baseRest(function(object, sources) {
|
13
|
var index = -1,
|
14
|
length = sources.length,
|
15
|
customizer = length > 1 ? sources[length - 1] : undefined,
|
16
|
guard = length > 2 ? sources[2] : undefined;
|
17
|
|
18
|
customizer = (assigner.length > 3 && typeof customizer == 'function')
|
19
|
? (length--, customizer)
|
20
|
: undefined;
|
21
|
|
22
|
if (guard && isIterateeCall(sources[0], sources[1], guard)) {
|
23
|
customizer = length < 3 ? undefined : customizer;
|
24
|
length = 1;
|
25
|
}
|
26
|
object = Object(object);
|
27
|
while (++index < length) {
|
28
|
var source = sources[index];
|
29
|
if (source) {
|
30
|
assigner(object, source, index, customizer);
|
31
|
}
|
32
|
}
|
33
|
return object;
|
34
|
});
|
35
|
}
|
36
|
|
37
|
module.exports = createAssigner;
|