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8 | (function () {
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9 | 'use strict';
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10 |
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11 | var hasOwn = {}.hasOwnProperty;
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12 |
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13 | function classNames () {
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14 | var classes = '';
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15 |
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16 | for (var i = 0; i < arguments.length; i++) {
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17 | var arg = arguments[i];
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18 | if (!arg) continue;
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19 |
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20 | var argType = typeof arg;
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21 |
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22 | if (argType === 'string' || argType === 'number') {
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23 | classes += ' ' + arg;
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24 | } else if (Array.isArray(arg)) {
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25 | classes += ' ' + classNames.apply(null, arg);
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26 | } else if (argType === 'object') {
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27 | for (var key in arg) {
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28 | if (hasOwn.call(arg, key) && arg[key]) {
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29 | classes += ' ' + key;
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30 | }
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31 | }
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32 | }
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33 | }
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34 |
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35 | return classes.substr(1);
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36 | }
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37 |
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38 | if (typeof module !== 'undefined' && module.exports) {
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39 | module.exports = classNames;
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40 | } else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
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41 |
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42 | define('classnames', [], function () {
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43 | return classNames;
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44 | });
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45 | } else {
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46 | window.classNames = classNames;
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47 | }
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48 | }());
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