1  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;