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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 WebpackError = require("../WebpackError");
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9 | const {
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10 | evaluateToIdentifier
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11 | } = require("../javascript/JavascriptParserHelpers");
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12 | const ImportMetaContextDependency = require("./ImportMetaContextDependency");
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13 |
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14 |
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15 |
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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 | function createPropertyParseError(prop, expect) {
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22 | return createError(
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23 | `Parsing import.meta.webpackContext options failed. Unknown value for property ${JSON.stringify(
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24 | prop.key.name
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25 | )}, expected type ${expect}.`,
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26 | prop.value.loc
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27 | );
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28 | }
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29 |
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30 | function createError(msg, loc) {
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31 | const error = new WebpackError(msg);
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32 | error.name = "ImportMetaContextError";
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33 | error.loc = loc;
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34 | return error;
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35 | }
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36 |
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37 | module.exports = class ImportMetaContextDependencyParserPlugin {
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38 | apply(parser) {
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39 | parser.hooks.evaluateIdentifier
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40 | .for("import.meta.webpackContext")
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41 | .tap("HotModuleReplacementPlugin", expr => {
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42 | return evaluateToIdentifier(
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43 | "import.meta.webpackContext",
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44 | "import.meta",
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45 | () => ["webpackContext"],
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46 | true
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47 | )(expr);
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48 | });
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49 | parser.hooks.call
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50 | .for("import.meta.webpackContext")
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51 | .tap("ImportMetaContextDependencyParserPlugin", expr => {
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52 | if (expr.arguments.length < 1 || expr.arguments.length > 2) return;
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53 | const [directoryNode, optionsNode] = expr.arguments;
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54 | if (optionsNode && optionsNode.type !== "ObjectExpression") return;
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55 | const requestExpr = parser.evaluateExpression(directoryNode);
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56 | if (!requestExpr.isString()) return;
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57 | const request = requestExpr.string;
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58 | const errors = [];
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59 | let regExp = /^\.\/.*$/;
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60 | let recursive = true;
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61 |
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62 | let mode = "sync";
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63 |
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64 | let include;
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65 |
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66 | let exclude;
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67 |
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68 | const groupOptions = {};
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69 |
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70 | let chunkName;
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71 |
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72 | let exports;
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73 | if (optionsNode) {
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74 | for (const prop of optionsNode.properties) {
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75 | if (prop.type !== "Property" || prop.key.type !== "Identifier") {
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76 | errors.push(
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77 | createError(
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78 | "Parsing import.meta.webpackContext options failed.",
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79 | optionsNode.loc
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80 | )
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81 | );
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82 | break;
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83 | }
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84 | switch (prop.key.name) {
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85 | case "regExp": {
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86 | const regExpExpr = parser.evaluateExpression(
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87 | (prop.value)
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88 | );
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89 | if (!regExpExpr.isRegExp()) {
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90 | errors.push(createPropertyParseError(prop, "RegExp"));
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91 | } else {
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92 | regExp = regExpExpr.regExp;
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93 | }
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94 | break;
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95 | }
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96 | case "include": {
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97 | const regExpExpr = parser.evaluateExpression(
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98 | (prop.value)
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99 | );
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100 | if (!regExpExpr.isRegExp()) {
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101 | errors.push(createPropertyParseError(prop, "RegExp"));
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102 | } else {
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103 | include = regExpExpr.regExp;
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104 | }
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105 | break;
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106 | }
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107 | case "exclude": {
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108 | const regExpExpr = parser.evaluateExpression(
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109 | (prop.value)
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110 | );
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111 | if (!regExpExpr.isRegExp()) {
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112 | errors.push(createPropertyParseError(prop, "RegExp"));
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113 | } else {
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114 | exclude = regExpExpr.regExp;
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115 | }
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116 | break;
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117 | }
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118 | case "mode": {
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119 | const modeExpr = parser.evaluateExpression(
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120 | (prop.value)
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121 | );
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122 | if (!modeExpr.isString()) {
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123 | errors.push(createPropertyParseError(prop, "string"));
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124 | } else {
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125 | mode = (
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126 | modeExpr.string
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127 | );
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128 | }
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129 | break;
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130 | }
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131 | case "chunkName": {
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132 | const expr = parser.evaluateExpression(
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133 | (prop.value)
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134 | );
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135 | if (!expr.isString()) {
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136 | errors.push(createPropertyParseError(prop, "string"));
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137 | } else {
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138 | chunkName = expr.string;
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139 | }
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140 | break;
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141 | }
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142 | case "exports": {
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143 | const expr = parser.evaluateExpression(
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144 | (prop.value)
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145 | );
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146 | if (expr.isString()) {
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147 | exports = [[expr.string]];
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148 | } else if (expr.isArray()) {
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149 | const items = expr.items;
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150 | if (
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151 | items.every(i => {
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152 | if (!i.isArray()) return false;
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153 | const innerItems = i.items;
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154 | return innerItems.every(i => i.isString());
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155 | })
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156 | ) {
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157 | exports = [];
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158 | for (const i1 of items) {
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159 | const export_ = [];
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160 | for (const i2 of i1.items) {
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161 | export_.push(i2.string);
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162 | }
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163 | exports.push(export_);
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164 | }
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165 | } else {
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166 | errors.push(
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167 | createPropertyParseError(prop, "string|string[][]")
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168 | );
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169 | }
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170 | } else {
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171 | errors.push(
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172 | createPropertyParseError(prop, "string|string[][]")
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173 | );
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174 | }
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175 | break;
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176 | }
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177 | case "prefetch": {
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178 | const expr = parser.evaluateExpression(
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179 | (prop.value)
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180 | );
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181 | if (expr.isBoolean()) {
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182 | groupOptions.prefetchOrder = 0;
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183 | } else if (expr.isNumber()) {
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184 | groupOptions.prefetchOrder = expr.number;
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185 | } else {
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186 | errors.push(createPropertyParseError(prop, "boolean|number"));
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187 | }
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188 | break;
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189 | }
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190 | case "preload": {
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191 | const expr = parser.evaluateExpression(
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192 | (prop.value)
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193 | );
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194 | if (expr.isBoolean()) {
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195 | groupOptions.preloadOrder = 0;
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196 | } else if (expr.isNumber()) {
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197 | groupOptions.preloadOrder = expr.number;
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198 | } else {
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199 | errors.push(createPropertyParseError(prop, "boolean|number"));
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200 | }
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201 | break;
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202 | }
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203 | case "recursive": {
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204 | const recursiveExpr = parser.evaluateExpression(
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205 | (prop.value)
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206 | );
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207 | if (!recursiveExpr.isBoolean()) {
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208 | errors.push(createPropertyParseError(prop, "boolean"));
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209 | } else {
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210 | recursive = recursiveExpr.bool;
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211 | }
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212 | break;
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213 | }
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214 | default:
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215 | errors.push(
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216 | createError(
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217 | `Parsing import.meta.webpackContext options failed. Unknown property ${JSON.stringify(
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218 | prop.key.name
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219 | )}.`,
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220 | optionsNode.loc
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221 | )
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222 | );
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223 | }
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224 | }
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225 | }
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226 | if (errors.length) {
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227 | for (const error of errors) parser.state.current.addError(error);
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228 | return;
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229 | }
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230 |
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231 | const dep = new ImportMetaContextDependency(
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232 | {
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233 | request,
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234 | include,
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235 | exclude,
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236 | recursive,
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237 | regExp,
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238 | groupOptions,
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239 | chunkName,
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240 | referencedExports: exports,
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241 | mode,
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242 | category: "esm"
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243 | },
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244 | expr.range
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245 | );
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246 | dep.loc = expr.loc;
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247 | dep.optional = !!parser.scope.inTry;
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248 | parser.state.current.addDependency(dep);
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249 | return true;
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250 | });
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251 | }
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252 | };
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