You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.3 KiB
49 lines
1.3 KiB
var LazyWrapper = require('./_LazyWrapper'),
|
|
LodashWrapper = require('./_LodashWrapper'),
|
|
baseAt = require('./_baseAt'),
|
|
flatRest = require('./_flatRest'),
|
|
isIndex = require('./_isIndex'),
|
|
thru = require('./thru');
|
|
|
|
/**
|
|
* This method is the wrapper version of `_.at`.
|
|
*
|
|
* @name at
|
|
* @memberOf _
|
|
* @since 1.0.0
|
|
* @category Seq
|
|
* @param {...(string|string[])} [paths] The property paths to pick.
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
|
|
*
|
|
* _(object).at(['a[0].b.c', 'a[1]']).value();
|
|
* // => [3, 4]
|
|
*/
|
|
var wrapperAt = flatRest(function(paths) {
|
|
var length = paths.length,
|
|
start = length ? paths[0] : 0,
|
|
value = this.__wrapped__,
|
|
interceptor = function(object) { return baseAt(object, paths); };
|
|
|
|
if (length > 1 || this.__actions__.length ||
|
|
!(value instanceof LazyWrapper) || !isIndex(start)) {
|
|
return this.thru(interceptor);
|
|
}
|
|
value = value.slice(start, +start + (length ? 1 : 0));
|
|
value.__actions__.push({
|
|
'func': thru,
|
|
'args': [interceptor],
|
|
'thisArg': undefined
|
|
});
|
|
return new LodashWrapper(value, this.__chain__).thru(function(array) {
|
|
if (length && !array.length) {
|
|
array.push(undefined);
|
|
}
|
|
return array;
|
|
});
|
|
});
|
|
|
|
module.exports = wrapperAt;
|