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7 |
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8 | 'use strict';
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9 |
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10 | module.exports = function unique(arr) {
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11 | if (!Array.isArray(arr)) {
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12 | throw new TypeError('array-unique expects an array.');
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13 | }
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14 |
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15 | var len = arr.length;
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16 | var i = -1;
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17 |
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18 | while (i++ < len) {
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19 | var j = i + 1;
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20 |
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21 | for (; j < arr.length; ++j) {
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22 | if (arr[i] === arr[j]) {
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23 | arr.splice(j--, 1);
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24 | }
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25 | }
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26 | }
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27 | return arr;
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28 | };
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29 |
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30 | module.exports.immutable = function uniqueImmutable(arr) {
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31 | if (!Array.isArray(arr)) {
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32 | throw new TypeError('array-unique expects an array.');
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33 | }
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34 |
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35 | var arrLen = arr.length;
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36 | var newArr = new Array(arrLen);
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37 |
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38 | for (var i = 0; i < arrLen; i++) {
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39 | newArr[i] = arr[i];
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40 | }
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41 |
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42 | return module.exports(newArr);
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43 | };
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44 |
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