1 files changed, 133 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/runtime/AsyncModuleRuntimeModule.js b/node_modules/webpack/lib/runtime/AsyncModuleRuntimeModule.js
new file mode 100644
index 00000000..05b3686d
--- /dev/null
+++ b/node_modules/webpack/lib/runtime/AsyncModuleRuntimeModule.js
@@ -0,0 +1,133 @@
+/*
+	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 AsyncModuleRuntimeModule extends HelperRuntimeModule {
+	constructor() {
+		super("async module");
+	}
+
+	/**
+	 * @returns {string | null} runtime code
+	 */
+	generate() {
+		const compilation = /** @type {Compilation} */ (this.compilation);
+		const { runtimeTemplate } = compilation;
+		const fn = RuntimeGlobals.asyncModule;
+		return Template.asString([
+			'var webpackQueues = typeof Symbol === "function" ? Symbol("webpack queues") : "__webpack_queues__";',
+			`var webpackExports = typeof Symbol === "function" ? Symbol("webpack exports") : "${RuntimeGlobals.exports}";`,
+			'var webpackError = typeof Symbol === "function" ? Symbol("webpack error") : "__webpack_error__";',
+			`var resolveQueue = ${runtimeTemplate.basicFunction("queue", [
+				"if(queue && queue.d < 1) {",
+				Template.indent([
+					"queue.d = 1;",
+					`queue.forEach(${runtimeTemplate.expressionFunction(
+						"fn.r--",
+						"fn"
+					)});`,
+					`queue.forEach(${runtimeTemplate.expressionFunction(
+						"fn.r-- ? fn.r++ : fn()",
+						"fn"
+					)});`
+				]),
+				"}"
+			])}`,
+			`var wrapDeps = ${runtimeTemplate.returningFunction(
+				`deps.map(${runtimeTemplate.basicFunction("dep", [
+					'if(dep !== null && typeof dep === "object") {',
+					Template.indent([
+						"if(dep[webpackQueues]) return dep;",
+						"if(dep.then) {",
+						Template.indent([
+							"var queue = [];",
+							"queue.d = 0;",
+							`dep.then(${runtimeTemplate.basicFunction("r", [
+								"obj[webpackExports] = r;",
+								"resolveQueue(queue);"
+							])}, ${runtimeTemplate.basicFunction("e", [
+								"obj[webpackError] = e;",
+								"resolveQueue(queue);"
+							])});`,
+							"var obj = {};",
+							`obj[webpackQueues] = ${runtimeTemplate.expressionFunction(
+								`fn(queue)`,
+								"fn"
+							)};`,
+							"return obj;"
+						]),
+						"}"
+					]),
+					"}",
+					"var ret = {};",
+					`ret[webpackQueues] = ${runtimeTemplate.emptyFunction()};`,
+					"ret[webpackExports] = dep;",
+					"return ret;"
+				])})`,
+				"deps"
+			)};`,
+			`${fn} = ${runtimeTemplate.basicFunction("module, body, hasAwait", [
+				"var queue;",
+				"hasAwait && ((queue = []).d = -1);",
+				"var depQueues = new Set();",
+				"var exports = module.exports;",
+				"var currentDeps;",
+				"var outerResolve;",
+				"var reject;",
+				`var promise = new Promise(${runtimeTemplate.basicFunction(
+					"resolve, rej",
+					["reject = rej;", "outerResolve = resolve;"]
+				)});`,
+				"promise[webpackExports] = exports;",
+				`promise[webpackQueues] = ${runtimeTemplate.expressionFunction(
+					`queue && fn(queue), depQueues.forEach(fn), promise["catch"](${runtimeTemplate.emptyFunction()})`,
+					"fn"
+				)};`,
+				"module.exports = promise;",
+				`body(${runtimeTemplate.basicFunction("deps", [
+					"currentDeps = wrapDeps(deps);",
+					"var fn;",
+					`var getResult = ${runtimeTemplate.returningFunction(
+						`currentDeps.map(${runtimeTemplate.basicFunction("d", [
+							"if(d[webpackError]) throw d[webpackError];",
+							"return d[webpackExports];"
+						])})`
+					)}`,
+					`var promise = new Promise(${runtimeTemplate.basicFunction(
+						"resolve",
+						[
+							`fn = ${runtimeTemplate.expressionFunction(
+								"resolve(getResult)",
+								""
+							)};`,
+							"fn.r = 0;",
+							`var fnQueue = ${runtimeTemplate.expressionFunction(
+								"q !== queue && !depQueues.has(q) && (depQueues.add(q), q && !q.d && (fn.r++, q.push(fn)))",
+								"q"
+							)};`,
+							`currentDeps.map(${runtimeTemplate.expressionFunction(
+								"dep[webpackQueues](fnQueue)",
+								"dep"
+							)});`
+						]
+					)});`,
+					"return fn.r ? promise : getResult();"
+				])}, ${runtimeTemplate.expressionFunction(
+					"(err ? reject(promise[webpackError] = err) : outerResolve(exports)), resolveQueue(queue)",
+					"err"
+				)});`,
+				"queue && queue.d < 0 && (queue.d = 0);"
+			])};`
+		]);
+	}
+}
+
+module.exports = AsyncModuleRuntimeModule;