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1var arrayMap = require('./_arrayMap'),
2    baseIndexOf = require('./_baseIndexOf'),
3    baseIndexOfWith = require('./_baseIndexOfWith'),
4    baseUnary = require('./_baseUnary'),
5    copyArray = require('./_copyArray');
6
7/** Used for built-in method references. */
8var arrayProto = Array.prototype;
9
10/** Built-in value references. */
11var splice = arrayProto.splice;
12
13/**
14 * The base implementation of `_.pullAllBy` without support for iteratee
15 * shorthands.
16 *
17 * @private
18 * @param {Array} array The array to modify.
19 * @param {Array} values The values to remove.
20 * @param {Function} [iteratee] The iteratee invoked per element.
21 * @param {Function} [comparator] The comparator invoked per element.
22 * @returns {Array} Returns `array`.
23 */
24function basePullAll(array, values, iteratee, comparator) {
25  var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
26      index = -1,
27      length = values.length,
28      seen = array;
29
30  if (array === values) {
31    values = copyArray(values);
32  }
33  if (iteratee) {
34    seen = arrayMap(array, baseUnary(iteratee));
35  }
36  while (++index < length) {
37    var fromIndex = 0,
38        value = values[index],
39        computed = iteratee ? iteratee(value) : value;
40
41    while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
42      if (seen !== array) {
43        splice.call(seen, fromIndex, 1);
44      }
45      splice.call(array, fromIndex, 1);
46    }
47  }
48  return array;
49}
50
51module.exports = basePullAll;
52