chushihua

node_modules/webpack/lib/dependencies/LoaderPlugin.js

@@ -0,0 +1,60 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const LoaderDependency = require("./LoaderDependency");
+
+class LoaderPlugin {
+
+	apply(compiler) {
+		compiler.plugin("compilation", (compilation, params) => {
+			const normalModuleFactory = params.normalModuleFactory;
+
+			compilation.dependencyFactories.set(LoaderDependency, normalModuleFactory);
+		});
+		compiler.plugin("compilation", (compilation) => {
+			compilation.plugin("normal-module-loader", (loaderContext, module) => {
+				loaderContext.loadModule = function loadModule(request, callback) {
+					const dep = new LoaderDependency(request);
+					dep.loc = request;
+					compilation.addModuleDependencies(module, [
+						[dep]
+					], true, "lm", false, (err) => {
+						if(err) return callback(err);
+
+						if(!dep.module) return callback(new Error("Cannot load the module"));
+						if(dep.module.building) dep.module.building.push(next);
+						else next();
+
+						function next(err) {
+							if(err) return callback(err);
+
+							if(dep.module.error) return callback(dep.module.error);
+							if(!dep.module._source) throw new Error("The module created for a LoaderDependency must have a property _source");
+							let source, map;
+							const moduleSource = dep.module._source;
+							if(moduleSource.sourceAndMap) {
+								const sourceAndMap = moduleSource.sourceAndMap();
+								map = sourceAndMap.map;
+								source = sourceAndMap.source;
+							} else {
+								map = moduleSource.map();
+								source = moduleSource.source();
+							}
+							if(dep.module.fileDependencies) {
+								dep.module.fileDependencies.forEach((dep) => loaderContext.addDependency(dep));
+							}
+							if(dep.module.contextDependencies) {
+								dep.module.contextDependencies.forEach((dep) => loaderContext.addContextDependency(dep));
+							}
+							return callback(null, source, map, dep.module);
+						}
+					});
+				};
+			});
+		});
+	}
+}
+module.exports = LoaderPlugin;