lodash/differenceWith.js

import baseDifference from './.internal/baseDifference.js';
import baseFlatten from './.internal/baseFlatten.js';
import isArrayLikeObject from './isArrayLikeObject.js';
import last from './last.js';

/**
 * 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.
 *
 * @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
 *
 * const objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
 *
 * differenceWith(objects, [{ 'x': 1, 'y': 2 }], isEqual);
 * // => [{ 'x': 2, 'y': 1 }]
 */
function differenceWith(array, ...values) {
  let comparator = last(values);
  if (isArrayLikeObject(comparator)) {
    comparator = undefined;
  }
  return isArrayLikeObject(array)
    ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)
    : [];
}

export default differenceWith;