chushihua

node_modules/webpack/lib/ExternalModuleFactoryPlugin.js

@@ -0,0 +1,91 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const ExternalModule = require("./ExternalModule");
+
+class ExternalModuleFactoryPlugin {
+	constructor(type, externals) {
+		this.type = type;
+		this.externals = externals;
+	}
+
+	apply(normalModuleFactory) {
+		const globalType = this.type;
+		normalModuleFactory.plugin("factory", factory => (data, callback) => {
+			const context = data.context;
+			const dependency = data.dependencies[0];
+
+			function handleExternal(value, type, callback) {
+				if(typeof type === "function") {
+					callback = type;
+					type = undefined;
+				}
+				if(value === false) return factory(data, callback);
+				if(value === true) value = dependency.request;
+				if(typeof type === "undefined" && /^[a-z0-9]+ /.test(value)) {
+					const idx = value.indexOf(" ");
+					type = value.substr(0, idx);
+					value = value.substr(idx + 1);
+				}
+				callback(null, new ExternalModule(value, type || globalType, dependency.request));
+				return true;
+			}
+			(function handleExternals(externals, callback) {
+				if(typeof externals === "string") {
+					if(externals === dependency.request) {
+						return handleExternal(dependency.request, callback);
+					}
+				} else if(Array.isArray(externals)) {
+					let i = 0;
+					(function next() {
+						let asyncFlag;
+						const handleExternalsAndCallback = function handleExternalsAndCallback(err, module) {
+							if(err) return callback(err);
+							if(!module) {
+								if(asyncFlag) {
+									asyncFlag = false;
+									return;
+								}
+								return next();
+							}
+							callback(null, module);
+						};
+
+						do {
+							asyncFlag = true;
+							if(i >= externals.length) return callback();
+							handleExternals(externals[i++], handleExternalsAndCallback);
+						} while (!asyncFlag); // eslint-disable-line keyword-spacing
+						asyncFlag = false;
+					}());
+					return;
+				} else if(externals instanceof RegExp) {
+					if(externals.test(dependency.request)) {
+						return handleExternal(dependency.request, callback);
+					}
+				} else if(typeof externals === "function") {
+					externals.call(null, context, dependency.request, function(err, value, type) {
+						if(err) return callback(err);
+						if(typeof value !== "undefined") {
+							handleExternal(value, type, callback);
+						} else {
+							callback();
+						}
+					});
+					return;
+				} else if(typeof externals === "object" && Object.prototype.hasOwnProperty.call(externals, dependency.request)) {
+					return handleExternal(externals[dependency.request], callback);
+				}
+				callback();
+			}(this.externals, function(err, module) {
+				if(err) return callback(err);
+				if(!module) return handleExternal(false, callback);
+				return callback(null, module);
+			}));
+		});
+	}
+}
+module.exports = ExternalModuleFactoryPlugin;