1 |
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2 |
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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 RuntimeGlobals = require("../RuntimeGlobals");
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9 | const AMDDefineDependency = require("./AMDDefineDependency");
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10 | const AMDRequireArrayDependency = require("./AMDRequireArrayDependency");
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11 | const AMDRequireContextDependency = require("./AMDRequireContextDependency");
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12 | const AMDRequireItemDependency = require("./AMDRequireItemDependency");
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13 | const ConstDependency = require("./ConstDependency");
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14 | const ContextDependencyHelpers = require("./ContextDependencyHelpers");
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15 | const DynamicExports = require("./DynamicExports");
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16 | const LocalModuleDependency = require("./LocalModuleDependency");
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17 | const { addLocalModule, getLocalModule } = require("./LocalModulesHelpers");
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18 |
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19 | const isBoundFunctionExpression = expr => {
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20 | if (expr.type !== "CallExpression") return false;
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21 | if (expr.callee.type !== "MemberExpression") return false;
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22 | if (expr.callee.computed) return false;
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23 | if (expr.callee.object.type !== "FunctionExpression") return false;
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24 | if (expr.callee.property.type !== "Identifier") return false;
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25 | if (expr.callee.property.name !== "bind") return false;
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26 | return true;
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27 | };
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28 |
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29 | const isUnboundFunctionExpression = expr => {
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30 | if (expr.type === "FunctionExpression") return true;
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31 | if (expr.type === "ArrowFunctionExpression") return true;
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32 | return false;
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33 | };
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34 |
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35 | const isCallable = expr => {
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36 | if (isUnboundFunctionExpression(expr)) return true;
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37 | if (isBoundFunctionExpression(expr)) return true;
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38 | return false;
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39 | };
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40 |
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41 | class AMDDefineDependencyParserPlugin {
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42 | constructor(options) {
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43 | this.options = options;
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44 | }
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45 |
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46 | apply(parser) {
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47 | parser.hooks.call
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48 | .for("define")
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49 | .tap(
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50 | "AMDDefineDependencyParserPlugin",
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51 | this.processCallDefine.bind(this, parser)
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52 | );
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53 | }
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54 |
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55 | processArray(parser, expr, param, identifiers, namedModule) {
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56 | if (param.isArray()) {
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57 | param.items.forEach((param, idx) => {
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58 | if (
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59 | param.isString() &&
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60 | ["require", "module", "exports"].includes(param.string)
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61 | )
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62 | identifiers[idx] = param.string;
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63 | const result = this.processItem(parser, expr, param, namedModule);
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64 | if (result === undefined) {
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65 | this.processContext(parser, expr, param);
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66 | }
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67 | });
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68 | return true;
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69 | } else if (param.isConstArray()) {
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70 | const deps = [];
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71 | param.array.forEach((request, idx) => {
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72 | let dep;
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73 | let localModule;
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74 | if (request === "require") {
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75 | identifiers[idx] = request;
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76 | dep = "__webpack_require__";
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77 | } else if (["exports", "module"].includes(request)) {
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78 | identifiers[idx] = request;
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79 | dep = request;
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80 | } else if ((localModule = getLocalModule(parser.state, request))) {
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81 | localModule.flagUsed();
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82 | dep = new LocalModuleDependency(localModule, undefined, false);
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83 | dep.loc = expr.loc;
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84 | parser.state.module.addPresentationalDependency(dep);
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85 | } else {
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86 | dep = this.newRequireItemDependency(request);
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87 | dep.loc = expr.loc;
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88 | dep.optional = !!parser.scope.inTry;
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89 | parser.state.current.addDependency(dep);
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90 | }
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91 | deps.push(dep);
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92 | });
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93 | const dep = this.newRequireArrayDependency(deps, param.range);
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94 | dep.loc = expr.loc;
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95 | dep.optional = !!parser.scope.inTry;
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96 | parser.state.module.addPresentationalDependency(dep);
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97 | return true;
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98 | }
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99 | }
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100 | processItem(parser, expr, param, namedModule) {
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101 | if (param.isConditional()) {
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102 | param.options.forEach(param => {
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103 | const result = this.processItem(parser, expr, param);
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104 | if (result === undefined) {
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105 | this.processContext(parser, expr, param);
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106 | }
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107 | });
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108 | return true;
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109 | } else if (param.isString()) {
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110 | let dep, localModule;
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111 | if (param.string === "require") {
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112 | dep = new ConstDependency("__webpack_require__", param.range, [
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113 | RuntimeGlobals.require
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114 | ]);
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115 | } else if (param.string === "exports") {
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116 | dep = new ConstDependency("exports", param.range, [
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117 | RuntimeGlobals.exports
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118 | ]);
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119 | } else if (param.string === "module") {
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120 | dep = new ConstDependency("module", param.range, [
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121 | RuntimeGlobals.module
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122 | ]);
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123 | } else if (
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124 | (localModule = getLocalModule(parser.state, param.string, namedModule))
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125 | ) {
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126 | localModule.flagUsed();
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127 | dep = new LocalModuleDependency(localModule, param.range, false);
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128 | } else {
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129 | dep = this.newRequireItemDependency(param.string, param.range);
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130 | dep.optional = !!parser.scope.inTry;
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131 | parser.state.current.addDependency(dep);
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132 | return true;
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133 | }
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134 | dep.loc = expr.loc;
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135 | parser.state.module.addPresentationalDependency(dep);
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136 | return true;
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137 | }
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138 | }
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139 | processContext(parser, expr, param) {
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140 | const dep = ContextDependencyHelpers.create(
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141 | AMDRequireContextDependency,
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142 | param.range,
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143 | param,
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144 | expr,
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145 | this.options,
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146 | {
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147 | category: "amd"
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148 | },
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149 | parser
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150 | );
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151 | if (!dep) return;
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152 | dep.loc = expr.loc;
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153 | dep.optional = !!parser.scope.inTry;
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154 | parser.state.current.addDependency(dep);
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155 | return true;
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156 | }
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157 |
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158 | processCallDefine(parser, expr) {
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159 | let array, fn, obj, namedModule;
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160 | switch (expr.arguments.length) {
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161 | case 1:
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162 | if (isCallable(expr.arguments[0])) {
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163 |
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164 | fn = expr.arguments[0];
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165 | } else if (expr.arguments[0].type === "ObjectExpression") {
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166 |
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167 | obj = expr.arguments[0];
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168 | } else {
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169 |
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170 |
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171 | obj = fn = expr.arguments[0];
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172 | }
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173 | break;
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174 | case 2:
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175 | if (expr.arguments[0].type === "Literal") {
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176 | namedModule = expr.arguments[0].value;
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177 |
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178 | if (isCallable(expr.arguments[1])) {
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179 |
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180 | fn = expr.arguments[1];
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181 | } else if (expr.arguments[1].type === "ObjectExpression") {
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182 |
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183 | obj = expr.arguments[1];
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184 | } else {
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185 |
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186 |
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187 | obj = fn = expr.arguments[1];
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188 | }
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189 | } else {
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190 | array = expr.arguments[0];
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191 | if (isCallable(expr.arguments[1])) {
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192 |
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193 | fn = expr.arguments[1];
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194 | } else if (expr.arguments[1].type === "ObjectExpression") {
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195 |
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196 | obj = expr.arguments[1];
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197 | } else {
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198 |
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199 |
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200 | obj = fn = expr.arguments[1];
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201 | }
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202 | }
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203 | break;
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204 | case 3:
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205 |
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206 | namedModule = expr.arguments[0].value;
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207 | array = expr.arguments[1];
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208 | if (isCallable(expr.arguments[2])) {
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209 |
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210 | fn = expr.arguments[2];
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211 | } else if (expr.arguments[2].type === "ObjectExpression") {
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212 |
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213 | obj = expr.arguments[2];
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214 | } else {
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215 |
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216 |
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217 | obj = fn = expr.arguments[2];
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218 | }
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219 | break;
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220 | default:
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221 | return;
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222 | }
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223 | DynamicExports.bailout(parser.state);
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224 | let fnParams = null;
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225 | let fnParamsOffset = 0;
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226 | if (fn) {
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227 | if (isUnboundFunctionExpression(fn)) {
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228 | fnParams = fn.params;
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229 | } else if (isBoundFunctionExpression(fn)) {
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230 | fnParams = fn.callee.object.params;
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231 | fnParamsOffset = fn.arguments.length - 1;
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232 | if (fnParamsOffset < 0) {
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233 | fnParamsOffset = 0;
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234 | }
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235 | }
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236 | }
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237 | let fnRenames = new Map();
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238 | if (array) {
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239 | const identifiers = {};
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240 | const param = parser.evaluateExpression(array);
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241 | const result = this.processArray(
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242 | parser,
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243 | expr,
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244 | param,
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245 | identifiers,
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246 | namedModule
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247 | );
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248 | if (!result) return;
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249 | if (fnParams) {
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250 | fnParams = fnParams.slice(fnParamsOffset).filter((param, idx) => {
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251 | if (identifiers[idx]) {
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252 | fnRenames.set(param.name, parser.getVariableInfo(identifiers[idx]));
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253 | return false;
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254 | }
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255 | return true;
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256 | });
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257 | }
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258 | } else {
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259 | const identifiers = ["require", "exports", "module"];
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260 | if (fnParams) {
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261 | fnParams = fnParams.slice(fnParamsOffset).filter((param, idx) => {
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262 | if (identifiers[idx]) {
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263 | fnRenames.set(param.name, parser.getVariableInfo(identifiers[idx]));
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264 | return false;
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265 | }
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266 | return true;
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267 | });
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268 | }
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269 | }
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270 | let inTry;
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271 | if (fn && isUnboundFunctionExpression(fn)) {
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272 | inTry = parser.scope.inTry;
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273 | parser.inScope(fnParams, () => {
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274 | for (const [name, varInfo] of fnRenames) {
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275 | parser.setVariable(name, varInfo);
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276 | }
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277 | parser.scope.inTry = inTry;
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278 | if (fn.body.type === "BlockStatement") {
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279 | parser.detectMode(fn.body.body);
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280 | const prev = parser.prevStatement;
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281 | parser.preWalkStatement(fn.body);
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282 | parser.prevStatement = prev;
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283 | parser.walkStatement(fn.body);
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284 | } else {
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285 | parser.walkExpression(fn.body);
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286 | }
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287 | });
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288 | } else if (fn && isBoundFunctionExpression(fn)) {
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289 | inTry = parser.scope.inTry;
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290 | parser.inScope(
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291 | fn.callee.object.params.filter(
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292 | i => !["require", "module", "exports"].includes(i.name)
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293 | ),
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294 | () => {
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295 | for (const [name, varInfo] of fnRenames) {
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296 | parser.setVariable(name, varInfo);
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297 | }
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298 | parser.scope.inTry = inTry;
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299 | if (fn.callee.object.body.type === "BlockStatement") {
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300 | parser.detectMode(fn.callee.object.body.body);
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301 | const prev = parser.prevStatement;
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302 | parser.preWalkStatement(fn.callee.object.body);
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303 | parser.prevStatement = prev;
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304 | parser.walkStatement(fn.callee.object.body);
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305 | } else {
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306 | parser.walkExpression(fn.callee.object.body);
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307 | }
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308 | }
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309 | );
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310 | if (fn.arguments) {
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311 | parser.walkExpressions(fn.arguments);
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312 | }
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313 | } else if (fn || obj) {
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314 | parser.walkExpression(fn || obj);
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315 | }
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316 |
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317 | const dep = this.newDefineDependency(
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318 | expr.range,
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319 | array ? array.range : null,
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320 | fn ? fn.range : null,
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321 | obj ? obj.range : null,
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322 | namedModule ? namedModule : null
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323 | );
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324 | dep.loc = expr.loc;
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325 | if (namedModule) {
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326 | dep.localModule = addLocalModule(parser.state, namedModule);
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327 | }
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328 | parser.state.module.addPresentationalDependency(dep);
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329 | return true;
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330 | }
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331 |
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332 | newDefineDependency(
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333 | range,
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334 | arrayRange,
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335 | functionRange,
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336 | objectRange,
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337 | namedModule
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338 | ) {
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339 | return new AMDDefineDependency(
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340 | range,
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341 | arrayRange,
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342 | functionRange,
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343 | objectRange,
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344 | namedModule
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345 | );
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346 | }
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347 | newRequireArrayDependency(depsArray, range) {
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348 | return new AMDRequireArrayDependency(depsArray, range);
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349 | }
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350 | newRequireItemDependency(request, range) {
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351 | return new AMDRequireItemDependency(request, range);
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352 | }
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353 | }
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354 | module.exports = AMDDefineDependencyParserPlugin;
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