1 var SetCache = require('./_SetCache'),
2 arrayIncludes = require('./_arrayIncludes'),
3 arrayIncludesWith = require('./_arrayIncludesWith'),
4 cacheHas = require('./_cacheHas'),
5 createSet = require('./_createSet'),
6 setToArray = require('./_setToArray');
8 /** Used as the size to enable large array optimizations. */
9 var LARGE_ARRAY_SIZE = 200;
12 * The base implementation of `_.uniqBy` without support for iteratee shorthands.
15 * @param {Array} array The array to inspect.
16 * @param {Function} [iteratee] The iteratee invoked per element.
17 * @param {Function} [comparator] The comparator invoked per element.
18 * @returns {Array} Returns the new duplicate free array.
20 function baseUniq(array, iteratee, comparator) {
22 includes = arrayIncludes,
23 length = array.length,
30 includes = arrayIncludesWith;
32 else if (length >= LARGE_ARRAY_SIZE) {
33 var set = iteratee ? null : createSet(array);
35 return setToArray(set);
42 seen = iteratee ? [] : result;
45 while (++index < length) {
46 var value = array[index],
47 computed = iteratee ? iteratee(value) : value;
49 value = (comparator || value !== 0) ? value : 0;
50 if (isCommon && computed === computed) {
51 var seenIndex = seen.length;
53 if (seen[seenIndex] === computed) {
62 else if (!includes(seen, computed, comparator)) {
63 if (seen !== result) {
72 module.exports = baseUniq;