1  var arrayMap = require('./_arrayMap'),
 2      baseIntersection = require('./_baseIntersection'),
 3      baseRest = require('./_baseRest'),
 4      castArrayLikeObject = require('./_castArrayLikeObject'),
 5      last = require('./last');
 6  
 7  /**
 8   * This method is like `_.intersection` except that it accepts `comparator`
 9   * which is invoked to compare elements of `arrays`. The order and references
10   * of result values are determined by the first array. The comparator is
11   * invoked with two arguments: (arrVal, othVal).
12   *
13   * @static
14   * @memberOf _
15   * @since 4.0.0
16   * @category Array
17   * @param {...Array} [arrays] The arrays to inspect.
18   * @param {Function} [comparator] The comparator invoked per element.
19   * @returns {Array} Returns the new array of intersecting values.
20   * @example
21   *
22   * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
23   * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
24   *
25   * _.intersectionWith(objects, others, _.isEqual);
26   * // => [{ 'x': 1, 'y': 2 }]
27   */
28  var intersectionWith = baseRest(function(arrays) {
29    var comparator = last(arrays),
30        mapped = arrayMap(arrays, castArrayLikeObject);
31  
32    comparator = typeof comparator == 'function' ? comparator : undefined;
33    if (comparator) {
34      mapped.pop();
35    }
36    return (mapped.length && mapped[0] === arrays[0])
37      ? baseIntersection(mapped, undefined, comparator)
38      : [];
39  });
40  
41  module.exports = intersectionWith;