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5 |
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6 | "use strict";
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7 |
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8 | const asyncLib = require("neo-async");
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9 | const { AsyncSeriesWaterfallHook, SyncWaterfallHook } = require("tapable");
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10 | const ContextModule = require("./ContextModule");
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11 | const ModuleFactory = require("./ModuleFactory");
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12 | const ContextElementDependency = require("./dependencies/ContextElementDependency");
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13 | const { cachedSetProperty } = require("./util/cleverMerge");
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14 | const { createFakeHook } = require("./util/deprecation");
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15 | const { join } = require("./util/fs");
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16 |
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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 |
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24 |
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25 |
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26 |
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27 | const EMPTY_RESOLVE_OPTIONS = {};
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28 |
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29 | module.exports = class ContextModuleFactory extends ModuleFactory {
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30 | |
31 |
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32 |
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33 | constructor(resolverFactory) {
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34 | super();
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35 |
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36 | const alternativeRequests = new AsyncSeriesWaterfallHook([
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37 | "modules",
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38 | "options"
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39 | ]);
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40 | this.hooks = Object.freeze({
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41 |
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42 | beforeResolve: new AsyncSeriesWaterfallHook(["data"]),
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43 |
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44 | afterResolve: new AsyncSeriesWaterfallHook(["data"]),
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45 |
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46 | contextModuleFiles: new SyncWaterfallHook(["files"]),
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47 |
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48 | alternatives: createFakeHook(
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49 | {
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50 | name: "alternatives",
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51 |
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52 | intercept: interceptor => {
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53 | throw new Error(
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54 | "Intercepting fake hook ContextModuleFactory.hooks.alternatives is not possible, use ContextModuleFactory.hooks.alternativeRequests instead"
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55 | );
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56 | },
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57 |
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58 | tap: (options, fn) => {
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59 | alternativeRequests.tap(options, fn);
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60 | },
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61 |
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62 | tapAsync: (options, fn) => {
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63 | alternativeRequests.tapAsync(options, (items, _options, callback) =>
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64 | fn(items, callback)
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65 | );
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66 | },
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67 |
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68 | tapPromise: (options, fn) => {
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69 | alternativeRequests.tapPromise(options, fn);
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70 | }
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71 | },
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72 | "ContextModuleFactory.hooks.alternatives has deprecated in favor of ContextModuleFactory.hooks.alternativeRequests with an additional options argument.",
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73 | "DEP_WEBPACK_CONTEXT_MODULE_FACTORY_ALTERNATIVES"
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74 | ),
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75 | alternativeRequests
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76 | });
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77 | this.resolverFactory = resolverFactory;
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78 | }
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79 |
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80 | |
81 |
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82 |
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83 |
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84 |
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85 | create(data, callback) {
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86 | const context = data.context;
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87 | const dependencies = data.dependencies;
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88 | const resolveOptions = data.resolveOptions;
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89 | const dependency = (dependencies[0]);
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90 | const fileDependencies = new Set();
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91 | const missingDependencies = new Set();
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92 | const contextDependencies = new Set();
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93 | this.hooks.beforeResolve.callAsync(
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94 | {
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95 | context: context,
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96 | dependencies: dependencies,
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97 | resolveOptions,
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98 | fileDependencies,
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99 | missingDependencies,
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100 | contextDependencies,
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101 | ...dependency.options
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102 | },
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103 | (err, beforeResolveResult) => {
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104 | if (err) {
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105 | return callback(err, {
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106 | fileDependencies,
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107 | missingDependencies,
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108 | contextDependencies
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109 | });
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110 | }
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111 |
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112 |
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113 | if (!beforeResolveResult) {
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114 | return callback(null, {
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115 | fileDependencies,
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116 | missingDependencies,
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117 | contextDependencies
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118 | });
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119 | }
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120 |
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121 | const context = beforeResolveResult.context;
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122 | const request = beforeResolveResult.request;
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123 | const resolveOptions = beforeResolveResult.resolveOptions;
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124 |
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125 | let loaders,
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126 | resource,
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127 | loadersPrefix = "";
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128 | const idx = request.lastIndexOf("!");
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129 | if (idx >= 0) {
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130 | let loadersRequest = request.substr(0, idx + 1);
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131 | let i;
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132 | for (
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133 | i = 0;
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134 | i < loadersRequest.length && loadersRequest[i] === "!";
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135 | i++
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136 | ) {
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137 | loadersPrefix += "!";
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138 | }
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139 | loadersRequest = loadersRequest
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140 | .substr(i)
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141 | .replace(/!+$/, "")
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142 | .replace(/!!+/g, "!");
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143 | if (loadersRequest === "") {
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144 | loaders = [];
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145 | } else {
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146 | loaders = loadersRequest.split("!");
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147 | }
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148 | resource = request.substr(idx + 1);
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149 | } else {
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150 | loaders = [];
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151 | resource = request;
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152 | }
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153 |
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154 | const contextResolver = this.resolverFactory.get(
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155 | "context",
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156 | dependencies.length > 0
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157 | ? cachedSetProperty(
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158 | resolveOptions || EMPTY_RESOLVE_OPTIONS,
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159 | "dependencyType",
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160 | dependencies[0].category
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161 | )
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162 | : resolveOptions
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163 | );
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164 | const loaderResolver = this.resolverFactory.get("loader");
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165 |
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166 | asyncLib.parallel(
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167 | [
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168 | callback => {
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169 | contextResolver.resolve(
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170 | {},
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171 | context,
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172 | resource,
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173 | {
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174 | fileDependencies,
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175 | missingDependencies,
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176 | contextDependencies
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177 | },
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178 | (err, result) => {
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179 | if (err) return callback(err);
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180 | callback(null, result);
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181 | }
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182 | );
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183 | },
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184 | callback => {
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185 | asyncLib.map(
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186 | loaders,
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187 | (loader, callback) => {
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188 | loaderResolver.resolve(
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189 | {},
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190 | context,
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191 | loader,
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192 | {
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193 | fileDependencies,
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194 | missingDependencies,
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195 | contextDependencies
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196 | },
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197 | (err, result) => {
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198 | if (err) return callback(err);
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199 | callback(null, result);
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200 | }
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201 | );
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202 | },
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203 | callback
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204 | );
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205 | }
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206 | ],
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207 | (err, result) => {
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208 | if (err) {
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209 | return callback(err, {
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210 | fileDependencies,
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211 | missingDependencies,
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212 | contextDependencies
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213 | });
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214 | }
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215 |
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216 | this.hooks.afterResolve.callAsync(
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217 | {
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218 | addon:
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219 | loadersPrefix +
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220 | result[1].join("!") +
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221 | (result[1].length > 0 ? "!" : ""),
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222 | resource: result[0],
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223 | resolveDependencies: this.resolveDependencies.bind(this),
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224 | ...beforeResolveResult
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225 | },
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226 | (err, result) => {
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227 | if (err) {
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228 | return callback(err, {
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229 | fileDependencies,
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230 | missingDependencies,
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231 | contextDependencies
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232 | });
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233 | }
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234 |
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235 |
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236 | if (!result) {
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237 | return callback(null, {
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238 | fileDependencies,
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239 | missingDependencies,
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240 | contextDependencies
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241 | });
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242 | }
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243 |
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244 | return callback(null, {
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245 | module: new ContextModule(result.resolveDependencies, result),
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246 | fileDependencies,
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247 | missingDependencies,
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248 | contextDependencies
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249 | });
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250 | }
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251 | );
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252 | }
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253 | );
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254 | }
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255 | );
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256 | }
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257 |
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258 | |
259 |
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260 |
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261 |
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262 |
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263 |
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264 | resolveDependencies(fs, options, callback) {
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265 | const cmf = this;
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266 | const {
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267 | resource,
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268 | resourceQuery,
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269 | resourceFragment,
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270 | recursive,
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271 | regExp,
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272 | include,
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273 | exclude,
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274 | referencedExports,
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275 | category
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276 | } = options;
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277 | if (!regExp || !resource) return callback(null, []);
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278 |
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279 | const addDirectoryChecked = (directory, visited, callback) => {
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280 | fs.realpath(directory, (err, realPath) => {
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281 | if (err) return callback(err);
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282 | if (visited.has(realPath)) return callback(null, []);
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283 | let recursionStack;
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284 | addDirectory(
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285 | directory,
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286 | (dir, callback) => {
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287 | if (recursionStack === undefined) {
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288 | recursionStack = new Set(visited);
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289 | recursionStack.add(realPath);
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290 | }
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291 | addDirectoryChecked(dir, recursionStack, callback);
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292 | },
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293 | callback
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294 | );
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295 | });
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296 | };
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297 |
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298 | const addDirectory = (directory, addSubDirectory, callback) => {
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299 | fs.readdir(directory, (err, files) => {
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300 | if (err) return callback(err);
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301 | const processedFiles = cmf.hooks.contextModuleFiles.call(
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302 | (files).map(file => file.normalize("NFC"))
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303 | );
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304 | if (!processedFiles || processedFiles.length === 0)
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305 | return callback(null, []);
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306 | asyncLib.map(
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307 | processedFiles.filter(p => p.indexOf(".") !== 0),
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308 | (segment, callback) => {
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309 | const subResource = join(fs, directory, segment);
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310 |
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311 | if (!exclude || !subResource.match(exclude)) {
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312 | fs.stat(subResource, (err, stat) => {
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313 | if (err) {
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314 | if (err.code === "ENOENT") {
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315 |
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316 |
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317 | return callback();
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318 | } else {
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319 | return callback(err);
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320 | }
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321 | }
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322 |
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323 | if (stat.isDirectory()) {
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324 | if (!recursive) return callback();
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325 | addSubDirectory(subResource, callback);
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326 | } else if (
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327 | stat.isFile() &&
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328 | (!include || subResource.match(include))
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329 | ) {
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330 | const obj = {
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331 | context: resource,
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332 | request:
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333 | "." +
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334 | subResource.substr(resource.length).replace(/\\/g, "/")
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335 | };
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336 |
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337 | this.hooks.alternativeRequests.callAsync(
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338 | [obj],
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339 | options,
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340 | (err, alternatives) => {
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341 | if (err) return callback(err);
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342 | alternatives = alternatives
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343 | .filter(obj => regExp.test(obj.request))
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344 | .map(obj => {
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345 | const dep = new ContextElementDependency(
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346 | obj.request + resourceQuery + resourceFragment,
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347 | obj.request,
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348 | category,
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349 | referencedExports
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350 | );
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351 | dep.optional = true;
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352 | return dep;
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353 | });
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354 | callback(null, alternatives);
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355 | }
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356 | );
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357 | } else {
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358 | callback();
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359 | }
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360 | });
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361 | } else {
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362 | callback();
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363 | }
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364 | },
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365 | (err, result) => {
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366 | if (err) return callback(err);
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367 |
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368 | if (!result) return callback(null, []);
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369 |
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370 | const flattenedResult = [];
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371 |
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372 | for (const item of result) {
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373 | if (item) flattenedResult.push(...item);
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374 | }
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375 |
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376 | callback(null, flattenedResult);
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377 | }
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378 | );
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379 | });
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380 | };
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381 |
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382 | if (typeof fs.realpath === "function") {
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383 | addDirectoryChecked(resource, new Set(), callback);
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384 | } else {
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385 | const addSubDirectory = (dir, callback) =>
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386 | addDirectory(dir, addSubDirectory, callback);
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387 | addDirectory(resource, addSubDirectory, callback);
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388 | }
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389 | }
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390 | };
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