| 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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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 NormalModule = require("../NormalModule");
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| 9 | const LazySet = require("../util/LazySet");
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| 10 | const LoaderDependency = require("./LoaderDependency");
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| 11 | const LoaderImportDependency = require("./LoaderImportDependency");
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| 12 |
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| 13 | /** @typedef {import("../../declarations/LoaderContext").LoaderPluginLoaderContext} LoaderPluginLoaderContext */
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| 14 | /** @typedef {import("../Compilation").DepConstructor} DepConstructor */
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| 15 | /** @typedef {import("../Compilation").ExecuteModuleResult} ExecuteModuleResult */
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| 16 | /** @typedef {import("../Compiler")} Compiler */
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| 17 | /** @typedef {import("../Module")} Module */
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| 18 | /** @typedef {import("../Module").BuildInfo} BuildInfo */
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| 19 |
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| 20 | /**
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| 21 | * @callback ImportModuleCallback
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| 22 | * @param {(Error | null)=} err error object
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| 23 | * @param {any=} exports exports of the evaluated module
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| 24 | */
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| 25 |
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| 26 | /**
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| 27 | * @typedef {object} ImportModuleOptions
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| 28 | * @property {string=} layer the target layer
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| 29 | * @property {string=} publicPath the target public path
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| 30 | * @property {string=} baseUri target base uri
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| 31 | */
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| 32 |
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| 33 | class LoaderPlugin {
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| 34 | /**
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| 35 | * @param {object} options options
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| 36 | */
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| 37 | constructor(options = {}) {}
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| 38 |
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| 39 | /**
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| 40 | * Apply the plugin
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| 41 | * @param {Compiler} compiler the compiler instance
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| 42 | * @returns {void}
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| 43 | */
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| 44 | apply(compiler) {
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| 45 | compiler.hooks.compilation.tap(
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| 46 | "LoaderPlugin",
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| 47 | (compilation, { normalModuleFactory }) => {
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| 48 | compilation.dependencyFactories.set(
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| 49 | LoaderDependency,
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| 50 | normalModuleFactory
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| 51 | );
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| 52 | compilation.dependencyFactories.set(
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| 53 | LoaderImportDependency,
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| 54 | normalModuleFactory
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| 55 | );
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| 56 | }
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| 57 | );
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| 58 |
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| 59 | compiler.hooks.compilation.tap("LoaderPlugin", compilation => {
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| 60 | const moduleGraph = compilation.moduleGraph;
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| 61 | NormalModule.getCompilationHooks(compilation).loader.tap(
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| 62 | "LoaderPlugin",
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| 63 | loaderContext => {
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| 64 | loaderContext.loadModule = (request, callback) => {
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| 65 | const dep = new LoaderDependency(request);
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| 66 | dep.loc = {
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| 67 | name: request
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| 68 | };
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| 69 | const factory = compilation.dependencyFactories.get(
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| 70 | /** @type {DepConstructor} */ (dep.constructor)
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| 71 | );
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| 72 | if (factory === undefined) {
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| 73 | return callback(
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| 74 | new Error(
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| 75 | `No module factory available for dependency type: ${dep.constructor.name}`
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| 76 | )
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| 77 | );
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| 78 | }
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| 79 | const oldFactorizeQueueContext =
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| 80 | compilation.factorizeQueue.getContext();
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| 81 | compilation.factorizeQueue.setContext("load-module");
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| 82 | const oldAddModuleQueueContext =
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| 83 | compilation.addModuleQueue.getContext();
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| 84 | compilation.addModuleQueue.setContext("load-module");
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| 85 | compilation.buildQueue.increaseParallelism();
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| 86 | compilation.handleModuleCreation(
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| 87 | {
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| 88 | factory,
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| 89 | dependencies: [dep],
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| 90 | originModule:
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| 91 | /** @type {NormalModule} */
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| 92 | (loaderContext._module),
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| 93 | context: loaderContext.context,
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| 94 | recursive: false
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| 95 | },
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| 96 | err => {
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| 97 | compilation.factorizeQueue.setContext(oldFactorizeQueueContext);
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| 98 | compilation.addModuleQueue.setContext(oldAddModuleQueueContext);
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| 99 | compilation.buildQueue.decreaseParallelism();
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| 100 | if (err) {
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| 101 | return callback(err);
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| 102 | }
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| 103 | const referencedModule = moduleGraph.getModule(dep);
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| 104 | if (!referencedModule) {
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| 105 | return callback(new Error("Cannot load the module"));
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| 106 | }
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| 107 | if (referencedModule.getNumberOfErrors() > 0) {
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| 108 | return callback(
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| 109 | new Error("The loaded module contains errors")
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| 110 | );
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| 111 | }
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| 112 | const moduleSource = referencedModule.originalSource();
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| 113 | if (!moduleSource) {
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| 114 | return callback(
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| 115 | new Error(
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| 116 | "The module created for a LoaderDependency must have an original source"
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| 117 | )
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| 118 | );
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| 119 | }
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| 120 | let map;
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| 121 | let source;
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| 122 | if (moduleSource.sourceAndMap) {
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| 123 | const sourceAndMap = moduleSource.sourceAndMap();
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| 124 | map = sourceAndMap.map;
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| 125 | source = sourceAndMap.source;
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| 126 | } else {
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| 127 | map = moduleSource.map();
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| 128 | source = moduleSource.source();
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| 129 | }
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| 130 | const fileDependencies = new LazySet();
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| 131 | const contextDependencies = new LazySet();
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| 132 | const missingDependencies = new LazySet();
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| 133 | const buildDependencies = new LazySet();
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| 134 | referencedModule.addCacheDependencies(
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| 135 | fileDependencies,
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| 136 | contextDependencies,
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| 137 | missingDependencies,
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| 138 | buildDependencies
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| 139 | );
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| 140 |
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| 141 | for (const d of fileDependencies) {
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| 142 | loaderContext.addDependency(d);
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| 143 | }
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| 144 | for (const d of contextDependencies) {
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| 145 | loaderContext.addContextDependency(d);
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| 146 | }
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| 147 | for (const d of missingDependencies) {
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| 148 | loaderContext.addMissingDependency(d);
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| 149 | }
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| 150 | for (const d of buildDependencies) {
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| 151 | loaderContext.addBuildDependency(d);
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| 152 | }
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| 153 | return callback(
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| 154 | null,
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| 155 | source,
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| 156 | /** @type {object | null} */ (map),
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| 157 | referencedModule
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| 158 | );
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| 159 | }
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| 160 | );
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| 161 | };
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| 162 |
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| 163 | /**
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| 164 | * @param {string} request the request string to load the module from
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| 165 | * @param {ImportModuleOptions} options options
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| 166 | * @param {ImportModuleCallback} callback callback returning the exports
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| 167 | * @returns {void}
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| 168 | */
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| 169 | const importModule = (request, options, callback) => {
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| 170 | const dep = new LoaderImportDependency(request);
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| 171 | dep.loc = {
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| 172 | name: request
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| 173 | };
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| 174 | const factory = compilation.dependencyFactories.get(
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| 175 | /** @type {DepConstructor} */ (dep.constructor)
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| 176 | );
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| 177 | if (factory === undefined) {
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| 178 | return callback(
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| 179 | new Error(
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| 180 | `No module factory available for dependency type: ${dep.constructor.name}`
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| 181 | )
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| 182 | );
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| 183 | }
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| 184 |
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| 185 | const oldFactorizeQueueContext =
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| 186 | compilation.factorizeQueue.getContext();
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| 187 | compilation.factorizeQueue.setContext("import-module");
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| 188 | const oldAddModuleQueueContext =
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| 189 | compilation.addModuleQueue.getContext();
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| 190 | compilation.addModuleQueue.setContext("import-module");
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| 191 | compilation.buildQueue.increaseParallelism();
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| 192 | compilation.handleModuleCreation(
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| 193 | {
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| 194 | factory,
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| 195 | dependencies: [dep],
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| 196 | originModule:
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| 197 | /** @type {NormalModule} */
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| 198 | (loaderContext._module),
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| 199 | contextInfo: {
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| 200 | issuerLayer: options.layer
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| 201 | },
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| 202 | context: loaderContext.context,
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| 203 | connectOrigin: false,
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| 204 | checkCycle: true
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| 205 | },
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| 206 | err => {
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| 207 | compilation.factorizeQueue.setContext(oldFactorizeQueueContext);
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| 208 | compilation.addModuleQueue.setContext(oldAddModuleQueueContext);
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| 209 | compilation.buildQueue.decreaseParallelism();
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| 210 | if (err) {
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| 211 | return callback(err);
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| 212 | }
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| 213 | const referencedModule = moduleGraph.getModule(dep);
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| 214 | if (!referencedModule) {
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| 215 | return callback(new Error("Cannot load the module"));
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| 216 | }
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| 217 | compilation.buildQueue.increaseParallelism();
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| 218 | compilation.executeModule(
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| 219 | referencedModule,
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| 220 | {
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| 221 | entryOptions: {
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| 222 | baseUri: options.baseUri,
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| 223 | publicPath: options.publicPath
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| 224 | }
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| 225 | },
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| 226 | (err, result) => {
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| 227 | compilation.buildQueue.decreaseParallelism();
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| 228 | if (err) return callback(err);
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| 229 | const {
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| 230 | fileDependencies,
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| 231 | contextDependencies,
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| 232 | missingDependencies,
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| 233 | buildDependencies,
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| 234 | cacheable,
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| 235 | assets,
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| 236 | exports
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| 237 | } = /** @type {ExecuteModuleResult} */ (result);
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| 238 | for (const d of fileDependencies) {
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| 239 | loaderContext.addDependency(d);
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| 240 | }
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| 241 | for (const d of contextDependencies) {
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| 242 | loaderContext.addContextDependency(d);
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| 243 | }
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| 244 | for (const d of missingDependencies) {
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| 245 | loaderContext.addMissingDependency(d);
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| 246 | }
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| 247 | for (const d of buildDependencies) {
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| 248 | loaderContext.addBuildDependency(d);
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| 249 | }
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| 250 | if (cacheable === false) loaderContext.cacheable(false);
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| 251 | for (const [name, { source, info }] of assets) {
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| 252 | const buildInfo =
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| 253 | /** @type {BuildInfo} */
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| 254 | (
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| 255 | /** @type {NormalModule} */ (loaderContext._module)
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| 256 | .buildInfo
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| 257 | );
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| 258 | if (!buildInfo.assets) {
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| 259 | buildInfo.assets = Object.create(null);
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| 260 | buildInfo.assetsInfo = new Map();
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| 261 | }
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| 262 | /** @type {NonNullable<BuildInfo["assets"]>} */
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| 263 | (buildInfo.assets)[name] = source;
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| 264 | /** @type {NonNullable<BuildInfo["assetsInfo"]>} */
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| 265 | (buildInfo.assetsInfo).set(name, info);
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| 266 | }
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| 267 | callback(null, exports);
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| 268 | }
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| 269 | );
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| 270 | }
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| 271 | );
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| 272 | };
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| 273 |
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| 274 | // eslint-disable-next-line no-warning-comments
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| 275 | // @ts-ignore Overloading doesn't work
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| 276 | loaderContext.importModule = (request, options, callback) => {
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| 277 | if (!callback) {
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| 278 | return new Promise((resolve, reject) => {
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| 279 | importModule(request, options || {}, (err, result) => {
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| 280 | if (err) reject(err);
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| 281 | else resolve(result);
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| 282 | });
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| 283 | });
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| 284 | }
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| 285 | return importModule(request, options || {}, callback);
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| 286 | };
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| 287 | }
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| 288 | );
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| 289 | });
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| 290 | }
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| 291 | }
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| 292 | module.exports = LoaderPlugin;
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