1 files changed, 69 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/runtime/CreateFakeNamespaceObjectRuntimeModule.js b/node_modules/webpack/lib/runtime/CreateFakeNamespaceObjectRuntimeModule.js
new file mode 100644
index 00000000..1450a38e
--- /dev/null
+++ b/node_modules/webpack/lib/runtime/CreateFakeNamespaceObjectRuntimeModule.js
@@ -0,0 +1,69 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+*/
+
+"use strict";
+
+const RuntimeGlobals = require("../RuntimeGlobals");
+const Template = require("../Template");
+const HelperRuntimeModule = require("./HelperRuntimeModule");
+
+/** @typedef {import("../Compilation")} Compilation */
+
+class CreateFakeNamespaceObjectRuntimeModule extends HelperRuntimeModule {
+	constructor() {
+		super("create fake namespace object");
+	}
+
+	/**
+	 * @returns {string | null} runtime code
+	 */
+	generate() {
+		const compilation = /** @type {Compilation} */ (this.compilation);
+		const { runtimeTemplate } = compilation;
+		const fn = RuntimeGlobals.createFakeNamespaceObject;
+		return Template.asString([
+			`var getProto = Object.getPrototypeOf ? ${runtimeTemplate.returningFunction(
+				"Object.getPrototypeOf(obj)",
+				"obj"
+			)} : ${runtimeTemplate.returningFunction("obj.__proto__", "obj")};`,
+			"var leafPrototypes;",
+			"// create a fake namespace object",
+			"// mode & 1: value is a module id, require it",
+			"// mode & 2: merge all properties of value into the ns",
+			"// mode & 4: return value when already ns object",
+			"// mode & 16: return value when it's Promise-like",
+			"// mode & 8|1: behave like require",
+			// Note: must be a function (not arrow), because this is used in body!
+			`${fn} = function(value, mode) {`,
+			Template.indent([
+				`if(mode & 1) value = this(value);`,
+				`if(mode & 8) return value;`,
+				"if(typeof value === 'object' && value) {",
+				Template.indent([
+					"if((mode & 4) && value.__esModule) return value;",
+					"if((mode & 16) && typeof value.then === 'function') return value;"
+				]),
+				"}",
+				"var ns = Object.create(null);",
+				`${RuntimeGlobals.makeNamespaceObject}(ns);`,
+				"var def = {};",
+				"leafPrototypes = leafPrototypes || [null, getProto({}), getProto([]), getProto(getProto)];",
+				"for(var current = mode & 2 && value; typeof current == 'object' && !~leafPrototypes.indexOf(current); current = getProto(current)) {",
+				Template.indent([
+					`Object.getOwnPropertyNames(current).forEach(${runtimeTemplate.expressionFunction(
+						`def[key] = ${runtimeTemplate.returningFunction("value[key]", "")}`,
+						"key"
+					)});`
+				]),
+				"}",
+				`def['default'] = ${runtimeTemplate.returningFunction("value", "")};`,
+				`${RuntimeGlobals.definePropertyGetters}(ns, def);`,
+				"return ns;"
+			]),
+			"};"
+		]);
+	}
+}
+
+module.exports = CreateFakeNamespaceObjectRuntimeModule;