| var arrayMap = require('./_arrayMap'), | |
| baseIntersection = require('./_baseIntersection'), | |
| baseRest = require('./_baseRest'), | |
| castArrayLikeObject = require('./_castArrayLikeObject'), | |
| last = require('./last'); | |
| /** | |
| * This method is like `_.intersection` except that it accepts `comparator` | |
| * which is invoked to compare elements of `arrays`. The order and references | |
| * of result values are determined by the first array. The comparator is | |
| * invoked with two arguments: (arrVal, othVal). | |
| * | |
| * @static | |
| * @memberOf _ | |
| * @since 4.0.0 | |
| * @category Array | |
| * @param {...Array} [arrays] The arrays to inspect. | |
| * @param {Function} [comparator] The comparator invoked per element. | |
| * @returns {Array} Returns the new array of intersecting values. | |
| * @example | |
| * | |
| * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]; | |
| * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]; | |
| * | |
| * _.intersectionWith(objects, others, _.isEqual); | |
| * // => [{ 'x': 1, 'y': 2 }] | |
| */ | |
| var intersectionWith = baseRest(function(arrays) { | |
| var comparator = last(arrays), | |
| mapped = arrayMap(arrays, castArrayLikeObject); | |
| comparator = typeof comparator == 'function' ? comparator : undefined; | |
| if (comparator) { | |
| mapped.pop(); | |
| } | |
| return (mapped.length && mapped[0] === arrays[0]) | |
| ? baseIntersection(mapped, undefined, comparator) | |
| : []; | |
| }); | |
| module.exports = intersectionWith; |