HORIZON PROJECT

var baseDifference = require('./_baseDifference'),

    baseFlatten = require('./_baseFlatten'),

    baseRest = require('./_baseRest'),

    isArrayLikeObject = require('./isArrayLikeObject'),

    last = require('./last');

/**

 * This method is like `_.difference` except that it accepts `comparator`

 * which is invoked to compare elements of `array` to `values`. The order and

 * references of result values are determined by the first array. The comparator

 * is invoked with two arguments: (arrVal, othVal).

 *

 * **Note:** Unlike `_.pullAllWith`, this method returns a new array.

 *

 * @static

 * @memberOf _

 * @since 4.0.0

 * @category Array

 * @param {Array} array The array to inspect.

 * @param {...Array} [values] The values to exclude.

 * @param {Function} [comparator] The comparator invoked per element.

 * @returns {Array} Returns the new array of filtered values.

 * @example

 *

 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];

 *

 * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);

 * // => [{ 'x': 2, 'y': 1 }]

 */

var differenceWith = baseRest(function(array, values) {

  var comparator = last(values);

  if (isArrayLikeObject(comparator)) {

    comparator = undefined;

  }

  return isArrayLikeObject(array)

    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)

    : [];

});

module.exports = differenceWith;