1 |
3a515b92
|
cagy
|
var LazyWrapper = require('./_LazyWrapper'),
|
2 |
|
|
LodashWrapper = require('./_LodashWrapper'),
|
3 |
|
|
baseAt = require('./_baseAt'),
|
4 |
|
|
flatRest = require('./_flatRest'),
|
5 |
|
|
isIndex = require('./_isIndex'),
|
6 |
|
|
thru = require('./thru');
|
7 |
|
|
|
8 |
|
|
/**
|
9 |
|
|
* This method is the wrapper version of `_.at`.
|
10 |
|
|
*
|
11 |
|
|
* @name at
|
12 |
|
|
* @memberOf _
|
13 |
|
|
* @since 1.0.0
|
14 |
|
|
* @category Seq
|
15 |
|
|
* @param {...(string|string[])} [paths] The property paths to pick.
|
16 |
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
17 |
|
|
* @example
|
18 |
|
|
*
|
19 |
|
|
* var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
|
20 |
|
|
*
|
21 |
|
|
* _(object).at(['a[0].b.c', 'a[1]']).value();
|
22 |
|
|
* // => [3, 4]
|
23 |
|
|
*/
|
24 |
|
|
var wrapperAt = flatRest(function(paths) {
|
25 |
|
|
var length = paths.length,
|
26 |
|
|
start = length ? paths[0] : 0,
|
27 |
|
|
value = this.__wrapped__,
|
28 |
|
|
interceptor = function(object) { return baseAt(object, paths); };
|
29 |
|
|
|
30 |
|
|
if (length > 1 || this.__actions__.length ||
|
31 |
|
|
!(value instanceof LazyWrapper) || !isIndex(start)) {
|
32 |
|
|
return this.thru(interceptor);
|
33 |
|
|
}
|
34 |
|
|
value = value.slice(start, +start + (length ? 1 : 0));
|
35 |
|
|
value.__actions__.push({
|
36 |
|
|
'func': thru,
|
37 |
|
|
'args': [interceptor],
|
38 |
|
|
'thisArg': undefined
|
39 |
|
|
});
|
40 |
|
|
return new LodashWrapper(value, this.__chain__).thru(function(array) {
|
41 |
|
|
if (length && !array.length) {
|
42 |
|
|
array.push(undefined);
|
43 |
|
|
}
|
44 |
|
|
return array;
|
45 |
|
|
});
|
46 |
|
|
});
|
47 |
|
|
|
48 |
|
|
module.exports = wrapperAt;
|