1 | "use strict";
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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11 |
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12 | var normalizeUrl = require("./normalize-url");
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13 |
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14 | var srcByModuleId = Object.create(null);
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15 | var noDocument = typeof document === "undefined";
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16 | var forEach = Array.prototype.forEach;
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 | function debounce(fn, time) {
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24 | var timeout = 0;
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25 | return function () {
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26 |
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27 | var self = this;
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28 |
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29 | var args = arguments;
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30 |
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31 | var functionCall = function functionCall() {
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32 | return fn.apply(self, args);
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33 | };
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34 |
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35 | clearTimeout(timeout);
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36 |
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37 | timeout = setTimeout(functionCall, time);
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38 | };
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39 | }
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40 |
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41 | function noop() {}
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42 |
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43 |
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44 |
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45 |
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46 |
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47 |
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48 | function getCurrentScriptUrl(moduleId) {
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49 | var src = srcByModuleId[moduleId];
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50 |
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51 | if (!src) {
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52 | if (document.currentScript) {
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53 | src =
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54 |
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55 | document.currentScript.src;
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56 | } else {
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57 | var scripts = document.getElementsByTagName("script");
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58 | var lastScriptTag = scripts[scripts.length - 1];
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59 |
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60 | if (lastScriptTag) {
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61 | src = lastScriptTag.src;
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62 | }
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63 | }
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64 |
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65 | srcByModuleId[moduleId] = src;
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66 | }
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67 | |
68 |
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69 |
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70 |
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71 |
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72 |
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73 | return function (fileMap) {
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74 | if (!src) {
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75 | return null;
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76 | }
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77 |
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78 | var splitResult = src.split(/([^\\/]+)\.js$/);
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79 | var filename = splitResult && splitResult[1];
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80 |
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81 | if (!filename) {
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82 | return [src.replace(".js", ".css")];
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83 | }
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84 |
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85 | if (!fileMap) {
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86 | return [src.replace(".js", ".css")];
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87 | }
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88 |
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89 | return fileMap.split(",").map(function (mapRule) {
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90 | var reg = new RegExp("".concat(filename, "\\.js$"), "g");
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91 | return normalizeUrl(src.replace(reg, "".concat(mapRule.replace(/{fileName}/g, filename), ".css")));
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92 | });
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93 | };
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94 | }
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95 |
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96 |
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97 |
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98 |
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99 |
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100 |
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101 | function updateCss(el, url) {
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102 | if (!url) {
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103 | if (!el.href) {
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104 | return;
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105 | }
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106 |
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107 |
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108 | url = el.href.split("?")[0];
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109 | }
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110 |
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111 | if (!isUrlRequest(
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112 |
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113 | url)) {
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114 | return;
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115 | }
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116 |
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117 | if (el.isLoaded === false) {
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118 |
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119 |
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120 | return;
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121 | }
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122 |
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123 | if (!url || !(url.indexOf(".css") > -1)) {
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124 | return;
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125 | }
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126 |
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127 |
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128 | el.visited = true;
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129 | var newEl = el.cloneNode();
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130 | newEl.isLoaded = false;
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131 | newEl.addEventListener("load", function () {
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132 | if (newEl.isLoaded) {
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133 | return;
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134 | }
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135 |
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136 | newEl.isLoaded = true;
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137 | el.parentNode.removeChild(el);
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138 | });
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139 | newEl.addEventListener("error", function () {
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140 | if (newEl.isLoaded) {
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141 | return;
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142 | }
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143 |
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144 | newEl.isLoaded = true;
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145 | el.parentNode.removeChild(el);
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146 | });
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147 | newEl.href = "".concat(url, "?").concat(Date.now());
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148 |
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149 | if (el.nextSibling) {
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150 | el.parentNode.insertBefore(newEl, el.nextSibling);
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151 | } else {
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152 | el.parentNode.appendChild(newEl);
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153 | }
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154 | }
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155 |
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156 |
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157 |
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158 |
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159 |
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160 |
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161 |
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162 | function getReloadUrl(href, src) {
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163 | var ret;
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164 |
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165 | href = normalizeUrl(href);
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166 | src.some(
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167 | |
168 |
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169 |
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170 |
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171 | function (url) {
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172 | if (href.indexOf(src) > -1) {
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173 | ret = url;
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174 | }
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175 | });
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176 | return ret;
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177 | }
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178 |
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179 |
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180 |
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181 |
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182 |
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183 |
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184 | function reloadStyle(src) {
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185 | if (!src) {
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186 | return false;
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187 | }
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188 |
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189 | var elements = document.querySelectorAll("link");
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190 | var loaded = false;
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191 | forEach.call(elements, function (el) {
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192 | if (!el.href) {
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193 | return;
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194 | }
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195 |
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196 | var url = getReloadUrl(el.href, src);
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197 |
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198 | if (!isUrlRequest(url)) {
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199 | return;
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200 | }
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201 |
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202 | if (el.visited === true) {
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203 | return;
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204 | }
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205 |
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206 | if (url) {
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207 | updateCss(el, url);
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208 | loaded = true;
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209 | }
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210 | });
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211 | return loaded;
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212 | }
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213 |
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214 | function reloadAll() {
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215 | var elements = document.querySelectorAll("link");
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216 | forEach.call(elements, function (el) {
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217 | if (el.visited === true) {
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218 | return;
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219 | }
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220 |
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221 | updateCss(el);
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222 | });
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223 | }
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224 |
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225 |
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226 |
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227 |
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228 |
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229 |
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230 | function isUrlRequest(url) {
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231 |
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232 |
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233 | if (!/^[a-zA-Z][a-zA-Z\d+\-.]*:/.test(url)) {
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234 | return false;
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235 | }
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236 |
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237 | return true;
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238 | }
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239 |
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240 |
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241 |
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242 |
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243 |
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244 |
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245 |
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246 | module.exports = function (moduleId, options) {
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247 | if (noDocument) {
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248 | console.log("no window.document found, will not HMR CSS");
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249 | return noop;
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250 | }
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251 |
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252 | var getScriptSrc = getCurrentScriptUrl(moduleId);
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253 |
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254 | function update() {
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255 | var src = getScriptSrc(options.filename);
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256 | var reloaded = reloadStyle(src);
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257 |
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258 | if (options.locals) {
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259 | console.log("[HMR] Detected local css modules. Reload all css");
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260 | reloadAll();
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261 | return;
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262 | }
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263 |
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264 | if (reloaded) {
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265 | console.log("[HMR] css reload %s", src.join(" "));
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266 | } else {
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267 | console.log("[HMR] Reload all css");
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268 | reloadAll();
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269 | }
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270 | }
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271 |
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272 | return debounce(update, 50);
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273 | }; |
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