1 | /*
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2 | MIT License http://www.opensource.org/licenses/mit-license.php
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3 | Author Ivan Kopeykin @vankop
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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 { pathToFileURL } = require("url");
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9 | const CommentCompilationWarning = require("../CommentCompilationWarning");
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10 | const {
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11 | JAVASCRIPT_MODULE_TYPE_AUTO,
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12 | JAVASCRIPT_MODULE_TYPE_ESM
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13 | } = require("../ModuleTypeConstants");
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14 | const RuntimeGlobals = require("../RuntimeGlobals");
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15 | const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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16 | const BasicEvaluatedExpression = require("../javascript/BasicEvaluatedExpression");
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17 | const { approve } = require("../javascript/JavascriptParserHelpers");
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18 | const InnerGraph = require("../optimize/InnerGraph");
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19 | const ConstDependency = require("./ConstDependency");
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20 | const URLDependency = require("./URLDependency");
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21 |
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22 | /** @typedef {import("estree").MemberExpression} MemberExpression */
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23 | /** @typedef {import("estree").NewExpression} NewExpressionNode */
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24 | /** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
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25 | /** @typedef {import("../Compiler")} Compiler */
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26 | /** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
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27 | /** @typedef {import("../NormalModule")} NormalModule */
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28 | /** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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29 | /** @typedef {import("../javascript/JavascriptParser")} Parser */
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30 | /** @typedef {import("../javascript/JavascriptParser").Range} Range */
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31 |
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32 | const PLUGIN_NAME = "URLPlugin";
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33 |
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34 | class URLPlugin {
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35 | /**
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36 | * @param {Compiler} compiler compiler
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37 | */
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38 | apply(compiler) {
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39 | compiler.hooks.compilation.tap(
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40 | PLUGIN_NAME,
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41 | (compilation, { normalModuleFactory }) => {
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42 | compilation.dependencyFactories.set(URLDependency, normalModuleFactory);
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43 | compilation.dependencyTemplates.set(
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44 | URLDependency,
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45 | new URLDependency.Template()
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46 | );
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47 |
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48 | /**
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49 | * @param {NormalModule} module module
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50 | * @returns {URL} file url
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51 | */
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52 | const getUrl = module => pathToFileURL(module.resource);
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53 |
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54 | /**
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55 | * @param {Parser} parser parser parser
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56 | * @param {MemberExpression} arg arg
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57 | * @returns {boolean} true when it is `meta.url`, otherwise false
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58 | */
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59 | const isMetaUrl = (parser, arg) => {
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60 | const chain = parser.extractMemberExpressionChain(arg);
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61 |
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62 | if (
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63 | chain.members.length !== 1 ||
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64 | chain.object.type !== "MetaProperty" ||
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65 | chain.object.meta.name !== "import" ||
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66 | chain.object.property.name !== "meta" ||
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67 | chain.members[0] !== "url"
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68 | )
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69 | return false;
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70 |
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71 | return true;
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72 | };
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73 |
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74 | /**
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75 | * @param {Parser} parser parser parser
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76 | * @param {JavascriptParserOptions} parserOptions parserOptions
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77 | * @returns {void}
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78 | */
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79 | const parserCallback = (parser, parserOptions) => {
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80 | if (parserOptions.url === false) return;
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81 | const relative = parserOptions.url === "relative";
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82 |
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83 | /**
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84 | * @param {NewExpressionNode} expr expression
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85 | * @returns {undefined | string} request
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86 | */
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87 | const getUrlRequest = expr => {
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88 | if (expr.arguments.length !== 2) return;
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89 |
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90 | const [arg1, arg2] = expr.arguments;
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91 |
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92 | if (
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93 | arg2.type !== "MemberExpression" ||
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94 | arg1.type === "SpreadElement"
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95 | )
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96 | return;
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97 |
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98 | if (!isMetaUrl(parser, arg2)) return;
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99 |
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100 | return parser.evaluateExpression(arg1).asString();
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101 | };
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102 |
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103 | parser.hooks.canRename.for("URL").tap(PLUGIN_NAME, approve);
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104 | parser.hooks.evaluateNewExpression
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105 | .for("URL")
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106 | .tap(PLUGIN_NAME, expr => {
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107 | const request = getUrlRequest(expr);
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108 | if (!request) return;
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109 | const url = new URL(request, getUrl(parser.state.module));
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110 |
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111 | return new BasicEvaluatedExpression()
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112 | .setString(url.toString())
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113 | .setRange(/** @type {Range} */ (expr.range));
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114 | });
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115 | parser.hooks.new.for("URL").tap(PLUGIN_NAME, _expr => {
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116 | const expr = /** @type {NewExpressionNode} */ (_expr);
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117 | const { options: importOptions, errors: commentErrors } =
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118 | parser.parseCommentOptions(/** @type {Range} */ (expr.range));
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119 |
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120 | if (commentErrors) {
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121 | for (const e of commentErrors) {
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122 | const { comment } = e;
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123 | parser.state.module.addWarning(
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124 | new CommentCompilationWarning(
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125 | `Compilation error while processing magic comment(-s): /*${comment.value}*/: ${e.message}`,
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126 | /** @type {DependencyLocation} */ (comment.loc)
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127 | )
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128 | );
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129 | }
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130 | }
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131 |
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132 | if (importOptions && importOptions.webpackIgnore !== undefined) {
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133 | if (typeof importOptions.webpackIgnore !== "boolean") {
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134 | parser.state.module.addWarning(
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135 | new UnsupportedFeatureWarning(
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136 | `\`webpackIgnore\` expected a boolean, but received: ${importOptions.webpackIgnore}.`,
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137 | /** @type {DependencyLocation} */ (expr.loc)
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138 | )
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139 | );
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140 | return;
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141 | } else if (importOptions.webpackIgnore) {
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142 | if (expr.arguments.length !== 2) return;
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143 |
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144 | const [, arg2] = expr.arguments;
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145 |
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146 | if (
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147 | arg2.type !== "MemberExpression" ||
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148 | !isMetaUrl(parser, arg2)
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149 | )
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150 | return;
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151 |
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152 | const dep = new ConstDependency(
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153 | RuntimeGlobals.baseURI,
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154 | /** @type {Range} */ (arg2.range),
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155 | [RuntimeGlobals.baseURI]
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156 | );
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157 | dep.loc = /** @type {DependencyLocation} */ (expr.loc);
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158 | parser.state.module.addPresentationalDependency(dep);
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159 |
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160 | return true;
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161 | }
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162 | }
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163 |
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164 | const request = getUrlRequest(expr);
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165 |
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166 | if (!request) return;
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167 |
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168 | const [arg1, arg2] = expr.arguments;
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169 | const dep = new URLDependency(
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170 | request,
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171 | [
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172 | /** @type {Range} */ (arg1.range)[0],
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173 | /** @type {Range} */ (arg2.range)[1]
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174 | ],
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175 | /** @type {Range} */ (expr.range),
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176 | relative
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177 | );
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178 | dep.loc = /** @type {DependencyLocation} */ (expr.loc);
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179 | parser.state.current.addDependency(dep);
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180 | InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
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181 | return true;
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182 | });
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183 | parser.hooks.isPure.for("NewExpression").tap(PLUGIN_NAME, _expr => {
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184 | const expr = /** @type {NewExpressionNode} */ (_expr);
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185 | const { callee } = expr;
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186 | if (callee.type !== "Identifier") return;
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187 | const calleeInfo = parser.getFreeInfoFromVariable(callee.name);
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188 | if (!calleeInfo || calleeInfo.name !== "URL") return;
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189 |
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190 | const request = getUrlRequest(expr);
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191 |
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192 | if (request) return true;
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193 | });
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194 | };
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195 |
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196 | normalModuleFactory.hooks.parser
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197 | .for(JAVASCRIPT_MODULE_TYPE_AUTO)
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198 | .tap(PLUGIN_NAME, parserCallback);
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199 |
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200 | normalModuleFactory.hooks.parser
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201 | .for(JAVASCRIPT_MODULE_TYPE_ESM)
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202 | .tap(PLUGIN_NAME, parserCallback);
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203 | }
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204 | );
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205 | }
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206 | }
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207 |
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208 | module.exports = URLPlugin;
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