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8 | (function () {
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9 | 'use strict';
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10 |
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11 | var classNames = (function () {
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12 | function _parseArray (resultSet, array) {
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13 | var length = array.length;
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14 |
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15 | for (var i = 0; i < length; ++i) {
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16 | _parse(resultSet, array[i]);
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17 | }
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18 | }
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19 |
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20 | var hasOwn = {}.hasOwnProperty;
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21 |
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22 | function _parseNumber (resultSet, num) {
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23 | resultSet[num] = true;
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24 | }
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25 |
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26 | function _parseObject (resultSet, object) {
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27 | for (var k in object) {
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28 | if (hasOwn.call(object, k)) {
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29 | if (object[k]) {
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30 | resultSet[k] = true;
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31 | } else {
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32 | delete resultSet[k];
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33 | }
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34 | }
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35 | }
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36 | }
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37 |
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38 | var SPACE = /\s+/;
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39 | function _parseString (resultSet, str) {
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40 | var array = str.split(SPACE);
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41 | var length = array.length;
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42 |
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43 | for (var i = 0; i < length; ++i) {
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44 | resultSet[array[i]] = true;
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45 | }
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46 | }
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47 |
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48 | function _parse (resultSet, arg) {
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49 | if (!arg) return;
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50 | var argType = typeof arg;
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51 |
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52 |
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53 | if (argType === 'string') {
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54 | _parseString(resultSet, arg);
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55 |
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56 |
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57 | } else if (Array.isArray(arg)) {
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58 | _parseArray(resultSet, arg);
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59 |
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60 |
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61 | } else if (argType === 'object') {
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62 | _parseObject(resultSet, arg);
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63 |
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64 |
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65 | } else if (argType === 'number') {
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66 | _parseNumber(resultSet, arg);
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67 | }
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68 | }
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69 |
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70 | function _classNames () {
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71 | var classSet = {};
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72 | _parseArray(classSet, arguments);
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73 |
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74 | var list = [];
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75 |
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76 | for (var k in classSet) {
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77 | if (hasOwn.call(classSet, k) && classSet[k]) {
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78 | list.push(k)
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79 | }
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80 | }
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81 |
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82 | return list.join(' ');
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83 | }
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84 |
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85 | return _classNames;
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86 | })();
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87 |
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88 | if (typeof module !== 'undefined' && module.exports) {
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89 | module.exports = classNames;
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90 | } else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {
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91 |
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92 | define('classnames', [], function () {
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93 | return classNames;
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94 | });
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95 | } else {
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96 | window.classNames = classNames;
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97 | }
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98 | }());
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