1 |
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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 | "use strict";
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7 |
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8 | const { OriginalSource, RawSource } = require("webpack-sources");
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9 | const ConcatenationScope = require("./ConcatenationScope");
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10 | const { UsageState } = require("./ExportsInfo");
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11 | const InitFragment = require("./InitFragment");
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12 | const Module = require("./Module");
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13 | const RuntimeGlobals = require("./RuntimeGlobals");
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14 | const Template = require("./Template");
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15 | const StaticExportsDependency = require("./dependencies/StaticExportsDependency");
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16 | const createHash = require("./util/createHash");
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17 | const extractUrlAndGlobal = require("./util/extractUrlAndGlobal");
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18 | const makeSerializable = require("./util/makeSerializable");
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19 | const propertyAccess = require("./util/propertyAccess");
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20 | const { register } = require("./util/serialization");
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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 |
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28 |
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29 |
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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 |
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36 |
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37 |
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38 |
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39 |
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40 |
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41 |
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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 |
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49 |
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50 |
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51 |
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52 |
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53 |
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54 |
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55 | const TYPES = new Set(["javascript"]);
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56 | const CSS_TYPES = new Set(["css-import"]);
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57 | const RUNTIME_REQUIREMENTS = new Set([RuntimeGlobals.module]);
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58 | const RUNTIME_REQUIREMENTS_FOR_SCRIPT = new Set([RuntimeGlobals.loadScript]);
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59 | const RUNTIME_REQUIREMENTS_FOR_MODULE = new Set([
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60 | RuntimeGlobals.definePropertyGetters
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61 | ]);
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62 | const EMPTY_RUNTIME_REQUIREMENTS = new Set([]);
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63 |
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64 |
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65 |
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66 |
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67 |
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68 |
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69 | const getSourceForGlobalVariableExternal = (variableName, type) => {
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70 | if (!Array.isArray(variableName)) {
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71 |
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72 | variableName = [variableName];
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73 | }
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74 |
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75 |
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76 | const objectLookup = variableName.map(r => `[${JSON.stringify(r)}]`).join("");
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77 | return {
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78 | iife: type === "this",
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79 | expression: `${type}${objectLookup}`
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80 | };
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81 | };
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82 |
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83 |
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84 |
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85 |
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86 |
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87 | const getSourceForCommonJsExternal = moduleAndSpecifiers => {
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88 | if (!Array.isArray(moduleAndSpecifiers)) {
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89 | return {
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90 | expression: `require(${JSON.stringify(moduleAndSpecifiers)})`
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91 | };
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92 | }
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93 | const moduleName = moduleAndSpecifiers[0];
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94 | return {
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95 | expression: `require(${JSON.stringify(moduleName)})${propertyAccess(
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96 | moduleAndSpecifiers,
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97 | 1
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98 | )}`
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99 | };
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100 | };
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101 |
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102 |
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103 |
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104 |
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105 |
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106 | const getSourceForCommonJsExternalInNodeModule = moduleAndSpecifiers => {
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107 | const chunkInitFragments = [
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108 | new InitFragment(
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109 | 'import { createRequire as __WEBPACK_EXTERNAL_createRequire } from "module";\n',
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110 | InitFragment.STAGE_HARMONY_IMPORTS,
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111 | 0,
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112 | "external module node-commonjs"
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113 | )
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114 | ];
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115 | if (!Array.isArray(moduleAndSpecifiers)) {
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116 | return {
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117 | expression: `__WEBPACK_EXTERNAL_createRequire(import.meta.url)(${JSON.stringify(
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118 | moduleAndSpecifiers
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119 | )})`,
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120 | chunkInitFragments
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121 | };
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122 | }
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123 | const moduleName = moduleAndSpecifiers[0];
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124 | return {
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125 | expression: `__WEBPACK_EXTERNAL_createRequire(import.meta.url)(${JSON.stringify(
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126 | moduleName
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127 | )})${propertyAccess(moduleAndSpecifiers, 1)}`,
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128 | chunkInitFragments
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129 | };
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130 | };
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131 |
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132 |
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133 |
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134 |
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135 |
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136 |
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137 | const getSourceForImportExternal = (moduleAndSpecifiers, runtimeTemplate) => {
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138 | const importName = runtimeTemplate.outputOptions.importFunctionName;
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139 | if (!runtimeTemplate.supportsDynamicImport() && importName === "import") {
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140 | throw new Error(
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141 | "The target environment doesn't support 'import()' so it's not possible to use external type 'import'"
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142 | );
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143 | }
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144 | if (!Array.isArray(moduleAndSpecifiers)) {
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145 | return {
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146 | expression: `${importName}(${JSON.stringify(moduleAndSpecifiers)});`
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147 | };
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148 | }
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149 | if (moduleAndSpecifiers.length === 1) {
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150 | return {
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151 | expression: `${importName}(${JSON.stringify(moduleAndSpecifiers[0])});`
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152 | };
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153 | }
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154 | const moduleName = moduleAndSpecifiers[0];
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155 | return {
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156 | expression: `${importName}(${JSON.stringify(
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157 | moduleName
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158 | )}).then(${runtimeTemplate.returningFunction(
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159 | `module${propertyAccess(moduleAndSpecifiers, 1)}`,
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160 | "module"
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161 | )});`
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162 | };
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163 | };
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164 |
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165 | class ModuleExternalInitFragment extends InitFragment {
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166 | |
167 |
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168 |
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169 |
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170 |
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171 | constructor(request, ident, hashFunction = "md4") {
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172 | if (ident === undefined) {
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173 | ident = Template.toIdentifier(request);
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174 | if (ident !== request) {
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175 | ident += `_${createHash(hashFunction)
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176 | .update(request)
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177 | .digest("hex")
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178 | .slice(0, 8)}`;
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179 | }
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180 | }
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181 | const identifier = `__WEBPACK_EXTERNAL_MODULE_${ident}__`;
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182 | super(
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183 | `import * as ${identifier} from ${JSON.stringify(request)};\n`,
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184 | InitFragment.STAGE_HARMONY_IMPORTS,
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185 | 0,
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186 | `external module import ${ident}`
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187 | );
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188 | this._ident = ident;
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189 | this._identifier = identifier;
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190 | this._request = request;
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191 | }
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192 |
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193 | getNamespaceIdentifier() {
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194 | return this._identifier;
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195 | }
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196 | }
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197 |
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198 | register(
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199 | ModuleExternalInitFragment,
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200 | "webpack/lib/ExternalModule",
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201 | "ModuleExternalInitFragment",
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202 | {
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203 | serialize(obj, { write }) {
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204 | write(obj._request);
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205 | write(obj._ident);
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206 | },
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207 | deserialize({ read }) {
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208 | return new ModuleExternalInitFragment(read(), read());
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209 | }
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210 | }
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211 | );
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212 |
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213 | const generateModuleRemapping = (input, exportsInfo, runtime) => {
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214 | if (exportsInfo.otherExportsInfo.getUsed(runtime) === UsageState.Unused) {
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215 | const properties = [];
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216 | for (const exportInfo of exportsInfo.orderedExports) {
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217 | const used = exportInfo.getUsedName(exportInfo.name, runtime);
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218 | if (!used) continue;
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219 | const nestedInfo = exportInfo.getNestedExportsInfo();
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220 | if (nestedInfo) {
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221 | const nestedExpr = generateModuleRemapping(
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222 | `${input}${propertyAccess([exportInfo.name])}`,
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223 | nestedInfo
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224 | );
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225 | if (nestedExpr) {
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226 | properties.push(`[${JSON.stringify(used)}]: y(${nestedExpr})`);
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227 | continue;
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228 | }
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229 | }
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230 | properties.push(
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231 | `[${JSON.stringify(used)}]: () => ${input}${propertyAccess([
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232 | exportInfo.name
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233 | ])}`
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234 | );
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235 | }
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236 | return `x({ ${properties.join(", ")} })`;
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237 | }
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238 | };
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239 |
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240 |
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241 |
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242 |
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243 |
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244 |
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245 |
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246 |
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247 | const getSourceForModuleExternal = (
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248 | moduleAndSpecifiers,
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249 | exportsInfo,
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250 | runtime,
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251 | hashFunction
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252 | ) => {
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253 | if (!Array.isArray(moduleAndSpecifiers))
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254 | moduleAndSpecifiers = [moduleAndSpecifiers];
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255 | const initFragment = new ModuleExternalInitFragment(
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256 | moduleAndSpecifiers[0],
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257 | undefined,
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258 | hashFunction
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259 | );
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260 | const baseAccess = `${initFragment.getNamespaceIdentifier()}${propertyAccess(
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261 | moduleAndSpecifiers,
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262 | 1
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263 | )}`;
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264 | const moduleRemapping = generateModuleRemapping(
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265 | baseAccess,
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266 | exportsInfo,
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267 | runtime
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268 | );
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269 | let expression = moduleRemapping || baseAccess;
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270 | return {
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271 | expression,
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272 | init: `var x = y => { var x = {}; ${RuntimeGlobals.definePropertyGetters}(x, y); return x; }\nvar y = x => () => x`,
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273 | runtimeRequirements: moduleRemapping
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274 | ? RUNTIME_REQUIREMENTS_FOR_MODULE
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275 | : undefined,
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276 | chunkInitFragments: [initFragment]
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277 | };
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278 | };
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279 |
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280 |
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281 |
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282 |
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283 |
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284 |
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285 | const getSourceForScriptExternal = (urlAndGlobal, runtimeTemplate) => {
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286 | if (typeof urlAndGlobal === "string") {
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287 | urlAndGlobal = extractUrlAndGlobal(urlAndGlobal);
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288 | }
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289 | const url = urlAndGlobal[0];
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290 | const globalName = urlAndGlobal[1];
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291 | return {
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292 | init: "var __webpack_error__ = new Error();",
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293 | expression: `new Promise(${runtimeTemplate.basicFunction(
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294 | "resolve, reject",
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295 | [
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296 | `if(typeof ${globalName} !== "undefined") return resolve();`,
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297 | `${RuntimeGlobals.loadScript}(${JSON.stringify(
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298 | url
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299 | )}, ${runtimeTemplate.basicFunction("event", [
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300 | `if(typeof ${globalName} !== "undefined") return resolve();`,
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301 | "var errorType = event && (event.type === 'load' ? 'missing' : event.type);",
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302 | "var realSrc = event && event.target && event.target.src;",
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303 | "__webpack_error__.message = 'Loading script failed.\\n(' + errorType + ': ' + realSrc + ')';",
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304 | "__webpack_error__.name = 'ScriptExternalLoadError';",
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305 | "__webpack_error__.type = errorType;",
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306 | "__webpack_error__.request = realSrc;",
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307 | "reject(__webpack_error__);"
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308 | ])}, ${JSON.stringify(globalName)});`
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309 | ]
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310 | )}).then(${runtimeTemplate.returningFunction(
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311 | `${globalName}${propertyAccess(urlAndGlobal, 2)}`
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312 | )})`,
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313 | runtimeRequirements: RUNTIME_REQUIREMENTS_FOR_SCRIPT
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314 | };
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315 | };
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316 |
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317 |
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318 |
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319 |
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320 |
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321 |
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322 |
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323 | const checkExternalVariable = (variableName, request, runtimeTemplate) => {
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324 | return `if(typeof ${variableName} === 'undefined') { ${runtimeTemplate.throwMissingModuleErrorBlock(
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325 | { request }
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326 | )} }\n`;
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327 | };
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328 |
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329 |
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330 |
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331 |
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332 |
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333 |
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334 |
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335 |
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336 | const getSourceForAmdOrUmdExternal = (
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337 | id,
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338 | optional,
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339 | request,
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340 | runtimeTemplate
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341 | ) => {
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342 | const externalVariable = `__WEBPACK_EXTERNAL_MODULE_${Template.toIdentifier(
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343 | `${id}`
|
344 | )}__`;
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345 | return {
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346 | init: optional
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347 | ? checkExternalVariable(
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348 | externalVariable,
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349 | Array.isArray(request) ? request.join(".") : request,
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350 | runtimeTemplate
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351 | )
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352 | : undefined,
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353 | expression: externalVariable
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354 | };
|
355 | };
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356 |
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357 |
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358 |
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359 |
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360 |
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361 |
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362 |
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363 | const getSourceForDefaultCase = (optional, request, runtimeTemplate) => {
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364 | if (!Array.isArray(request)) {
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365 |
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366 | request = [request];
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367 | }
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368 |
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369 | const variableName = request[0];
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370 | const objectLookup = propertyAccess(request, 1);
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371 | return {
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372 | init: optional
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373 | ? checkExternalVariable(variableName, request.join("."), runtimeTemplate)
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374 | : undefined,
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375 | expression: `${variableName}${objectLookup}`
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376 | };
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377 | };
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378 |
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379 | class ExternalModule extends Module {
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380 | constructor(request, type, userRequest) {
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381 | super("javascript/dynamic", null);
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382 |
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383 |
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384 |
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385 | this.request = request;
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386 |
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387 | this.externalType = type;
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388 |
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389 | this.userRequest = userRequest;
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390 | }
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391 |
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392 | |
393 |
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394 |
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395 | getSourceTypes() {
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396 | return this.externalType === "css-import" ? CSS_TYPES : TYPES;
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397 | }
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398 |
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399 | |
400 |
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401 |
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402 |
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403 | libIdent(options) {
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404 | return this.userRequest;
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405 | }
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406 |
|
407 | |
408 |
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409 |
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410 |
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411 |
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412 | chunkCondition(chunk, { chunkGraph }) {
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413 | return this.externalType === "css-import"
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414 | ? true
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415 | : chunkGraph.getNumberOfEntryModules(chunk) > 0;
|
416 | }
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417 |
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418 | |
419 |
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420 |
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421 | identifier() {
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422 | return `external ${this.externalType} ${JSON.stringify(this.request)}`;
|
423 | }
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424 |
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425 | |
426 |
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427 |
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428 |
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429 | readableIdentifier(requestShortener) {
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430 | return "external " + JSON.stringify(this.request);
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431 | }
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432 |
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433 | |
434 |
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435 |
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436 |
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437 |
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438 | needBuild(context, callback) {
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439 | return callback(null, !this.buildMeta);
|
440 | }
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441 |
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442 | |
443 |
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444 |
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445 |
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446 |
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447 |
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448 |
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449 |
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450 | build(options, compilation, resolver, fs, callback) {
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451 | this.buildMeta = {
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452 | async: false,
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453 | exportsType: undefined
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454 | };
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455 | this.buildInfo = {
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456 | strict: true,
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457 | topLevelDeclarations: new Set(),
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458 | module: compilation.outputOptions.module
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459 | };
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460 | const { request, externalType } = this._getRequestAndExternalType();
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461 | this.buildMeta.exportsType = "dynamic";
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462 | let canMangle = false;
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463 | this.clearDependenciesAndBlocks();
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464 | switch (externalType) {
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465 | case "this":
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466 | this.buildInfo.strict = false;
|
467 | break;
|
468 | case "system":
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469 | if (!Array.isArray(request) || request.length === 1) {
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470 | this.buildMeta.exportsType = "namespace";
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471 | canMangle = true;
|
472 | }
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473 | break;
|
474 | case "module":
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475 | if (this.buildInfo.module) {
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476 | if (!Array.isArray(request) || request.length === 1) {
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477 | this.buildMeta.exportsType = "namespace";
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478 | canMangle = true;
|
479 | }
|
480 | } else {
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481 | this.buildMeta.async = true;
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482 | if (!Array.isArray(request) || request.length === 1) {
|
483 | this.buildMeta.exportsType = "namespace";
|
484 | canMangle = false;
|
485 | }
|
486 | }
|
487 | break;
|
488 | case "script":
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489 | case "promise":
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490 | this.buildMeta.async = true;
|
491 | break;
|
492 | case "import":
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493 | this.buildMeta.async = true;
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494 | if (!Array.isArray(request) || request.length === 1) {
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495 | this.buildMeta.exportsType = "namespace";
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496 | canMangle = false;
|
497 | }
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498 | break;
|
499 | }
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500 | this.addDependency(new StaticExportsDependency(true, canMangle));
|
501 | callback();
|
502 | }
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503 |
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504 | restoreFromUnsafeCache(unsafeCacheData, normalModuleFactory) {
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505 | this._restoreFromUnsafeCache(unsafeCacheData, normalModuleFactory);
|
506 | }
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507 |
|
508 | |
509 |
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510 |
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511 |
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512 | getConcatenationBailoutReason({ moduleGraph }) {
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513 | switch (this.externalType) {
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514 | case "amd":
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515 | case "amd-require":
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516 | case "umd":
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517 | case "umd2":
|
518 | case "system":
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519 | case "jsonp":
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520 | return `${this.externalType} externals can't be concatenated`;
|
521 | }
|
522 | return undefined;
|
523 | }
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524 |
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525 | _getRequestAndExternalType() {
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526 | let { request, externalType } = this;
|
527 | if (typeof request === "object" && !Array.isArray(request))
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528 | request = request[externalType];
|
529 | return { request, externalType };
|
530 | }
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531 |
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532 | _getSourceData(
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533 | request,
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534 | externalType,
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535 | runtimeTemplate,
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536 | moduleGraph,
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537 | chunkGraph,
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538 | runtime
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539 | ) {
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540 | switch (externalType) {
|
541 | case "this":
|
542 | case "window":
|
543 | case "self":
|
544 | return getSourceForGlobalVariableExternal(request, this.externalType);
|
545 | case "global":
|
546 | return getSourceForGlobalVariableExternal(
|
547 | request,
|
548 | runtimeTemplate.globalObject
|
549 | );
|
550 | case "commonjs":
|
551 | case "commonjs2":
|
552 | case "commonjs-module":
|
553 | case "commonjs-static":
|
554 | return getSourceForCommonJsExternal(request);
|
555 | case "node-commonjs":
|
556 | return this.buildInfo.module
|
557 | ? getSourceForCommonJsExternalInNodeModule(request)
|
558 | : getSourceForCommonJsExternal(request);
|
559 | case "amd":
|
560 | case "amd-require":
|
561 | case "umd":
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562 | case "umd2":
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563 | case "system":
|
564 | case "jsonp": {
|
565 | const id = chunkGraph.getModuleId(this);
|
566 | return getSourceForAmdOrUmdExternal(
|
567 | id !== null ? id : this.identifier(),
|
568 | this.isOptional(moduleGraph),
|
569 | request,
|
570 | runtimeTemplate
|
571 | );
|
572 | }
|
573 | case "import":
|
574 | return getSourceForImportExternal(request, runtimeTemplate);
|
575 | case "script":
|
576 | return getSourceForScriptExternal(request, runtimeTemplate);
|
577 | case "module": {
|
578 | if (!this.buildInfo.module) {
|
579 | if (!runtimeTemplate.supportsDynamicImport()) {
|
580 | throw new Error(
|
581 | "The target environment doesn't support dynamic import() syntax so it's not possible to use external type 'module' within a script" +
|
582 | (runtimeTemplate.supportsEcmaScriptModuleSyntax()
|
583 | ? "\nDid you mean to build a EcmaScript Module ('output.module: true')?"
|
584 | : "")
|
585 | );
|
586 | }
|
587 | return getSourceForImportExternal(request, runtimeTemplate);
|
588 | }
|
589 | if (!runtimeTemplate.supportsEcmaScriptModuleSyntax()) {
|
590 | throw new Error(
|
591 | "The target environment doesn't support EcmaScriptModule syntax so it's not possible to use external type 'module'"
|
592 | );
|
593 | }
|
594 | return getSourceForModuleExternal(
|
595 | request,
|
596 | moduleGraph.getExportsInfo(this),
|
597 | runtime,
|
598 | runtimeTemplate.outputOptions.hashFunction
|
599 | );
|
600 | }
|
601 | case "var":
|
602 | case "promise":
|
603 | case "const":
|
604 | case "let":
|
605 | case "assign":
|
606 | default:
|
607 | return getSourceForDefaultCase(
|
608 | this.isOptional(moduleGraph),
|
609 | request,
|
610 | runtimeTemplate
|
611 | );
|
612 | }
|
613 | }
|
614 |
|
615 | |
616 |
|
617 |
|
618 |
|
619 | codeGeneration({
|
620 | runtimeTemplate,
|
621 | moduleGraph,
|
622 | chunkGraph,
|
623 | runtime,
|
624 | concatenationScope
|
625 | }) {
|
626 | const { request, externalType } = this._getRequestAndExternalType();
|
627 | switch (externalType) {
|
628 | case "asset": {
|
629 | const sources = new Map();
|
630 | sources.set(
|
631 | "javascript",
|
632 | new RawSource(`module.exports = ${JSON.stringify(request)};`)
|
633 | );
|
634 | const data = new Map();
|
635 | data.set("url", request);
|
636 | return { sources, runtimeRequirements: RUNTIME_REQUIREMENTS, data };
|
637 | }
|
638 | case "css-import": {
|
639 | const sources = new Map();
|
640 | sources.set(
|
641 | "css-import",
|
642 | new RawSource(`@import url(${JSON.stringify(request)});`)
|
643 | );
|
644 | return {
|
645 | sources,
|
646 | runtimeRequirements: EMPTY_RUNTIME_REQUIREMENTS
|
647 | };
|
648 | }
|
649 | default: {
|
650 | const sourceData = this._getSourceData(
|
651 | request,
|
652 | externalType,
|
653 | runtimeTemplate,
|
654 | moduleGraph,
|
655 | chunkGraph,
|
656 | runtime
|
657 | );
|
658 |
|
659 | let sourceString = sourceData.expression;
|
660 | if (sourceData.iife)
|
661 | sourceString = `(function() { return ${sourceString}; }())`;
|
662 | if (concatenationScope) {
|
663 | sourceString = `${
|
664 | runtimeTemplate.supportsConst() ? "const" : "var"
|
665 | } ${ConcatenationScope.NAMESPACE_OBJECT_EXPORT} = ${sourceString};`;
|
666 | concatenationScope.registerNamespaceExport(
|
667 | ConcatenationScope.NAMESPACE_OBJECT_EXPORT
|
668 | );
|
669 | } else {
|
670 | sourceString = `module.exports = ${sourceString};`;
|
671 | }
|
672 | if (sourceData.init)
|
673 | sourceString = `${sourceData.init}\n${sourceString}`;
|
674 |
|
675 | let data = undefined;
|
676 | if (sourceData.chunkInitFragments) {
|
677 | data = new Map();
|
678 | data.set("chunkInitFragments", sourceData.chunkInitFragments);
|
679 | }
|
680 |
|
681 | const sources = new Map();
|
682 | if (this.useSourceMap || this.useSimpleSourceMap) {
|
683 | sources.set(
|
684 | "javascript",
|
685 | new OriginalSource(sourceString, this.identifier())
|
686 | );
|
687 | } else {
|
688 | sources.set("javascript", new RawSource(sourceString));
|
689 | }
|
690 |
|
691 | let runtimeRequirements = sourceData.runtimeRequirements;
|
692 | if (!concatenationScope) {
|
693 | if (!runtimeRequirements) {
|
694 | runtimeRequirements = RUNTIME_REQUIREMENTS;
|
695 | } else {
|
696 | const set = new Set(runtimeRequirements);
|
697 | set.add(RuntimeGlobals.module);
|
698 | runtimeRequirements = set;
|
699 | }
|
700 | }
|
701 |
|
702 | return {
|
703 | sources,
|
704 | runtimeRequirements:
|
705 | runtimeRequirements || EMPTY_RUNTIME_REQUIREMENTS,
|
706 | data
|
707 | };
|
708 | }
|
709 | }
|
710 | }
|
711 |
|
712 | |
713 |
|
714 |
|
715 |
|
716 | size(type) {
|
717 | return 42;
|
718 | }
|
719 |
|
720 | |
721 |
|
722 |
|
723 |
|
724 |
|
725 | updateHash(hash, context) {
|
726 | const { chunkGraph } = context;
|
727 | hash.update(
|
728 | `${this.externalType}${JSON.stringify(this.request)}${this.isOptional(
|
729 | chunkGraph.moduleGraph
|
730 | )}`
|
731 | );
|
732 | super.updateHash(hash, context);
|
733 | }
|
734 |
|
735 | serialize(context) {
|
736 | const { write } = context;
|
737 |
|
738 | write(this.request);
|
739 | write(this.externalType);
|
740 | write(this.userRequest);
|
741 |
|
742 | super.serialize(context);
|
743 | }
|
744 |
|
745 | deserialize(context) {
|
746 | const { read } = context;
|
747 |
|
748 | this.request = read();
|
749 | this.externalType = read();
|
750 | this.userRequest = read();
|
751 |
|
752 | super.deserialize(context);
|
753 | }
|
754 | }
|
755 |
|
756 | makeSerializable(ExternalModule, "webpack/lib/ExternalModule");
|
757 |
|
758 | module.exports = ExternalModule;
|