1 files changed, 135 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/SystemMainTemplatePlugin.js b/node_modules/webpack/lib/SystemMainTemplatePlugin.js
new file mode 100644
index 0000000..1c3e4c8
--- /dev/null
+++ b/node_modules/webpack/lib/SystemMainTemplatePlugin.js
@@ -0,0 +1,135 @@
+/*
+ MIT License http://www.opensource.org/licenses/mit-license.php
+ Author Joel Denning @joeldenning
+ */
+
+"use strict";
+
+const { ConcatSource } = require("webpack-sources");
+const Template = require("./Template");
+
+/** @typedef {import("./Compilation")} Compilation */
+
+/**
+ * @typedef {Object} SystemMainTemplatePluginOptions
+ * @param {string=} name the library name
+ */
+
+class SystemMainTemplatePlugin {
+	/**
+	 * @param {SystemMainTemplatePluginOptions} options the plugin options
+	 */
+	constructor(options) {
+		this.name = options.name;
+	}
+
+	/**
+	 * @param {Compilation} compilation the compilation instance
+	 * @returns {void}
+	 */
+	apply(compilation) {
+		const { mainTemplate, chunkTemplate } = compilation;
+
+		const onRenderWithEntry = (source, chunk, hash) => {
+			const externals = chunk.getModules().filter(m => m.external);
+
+			// The name this bundle should be registered as with System
+			const name = this.name
+				? `${JSON.stringify(
+						mainTemplate.getAssetPath(this.name, { hash, chunk })
+				  )}, `
+				: "";
+
+			// The array of dependencies that are external to webpack and will be provided by System
+			const systemDependencies = JSON.stringify(
+				externals.map(m =>
+					typeof m.request === "object" ? m.request.amd : m.request
+				)
+			);
+
+			// The name of the variable provided by System for exporting
+			const dynamicExport = "__WEBPACK_DYNAMIC_EXPORT__";
+
+			// An array of the internal variable names for the webpack externals
+			const externalWebpackNames = externals.map(
+				m => `__WEBPACK_EXTERNAL_MODULE_${Template.toIdentifier(`${m.id}`)}__`
+			);
+
+			// Declaring variables for the internal variable names for the webpack externals
+			const externalVarDeclarations =
+				externalWebpackNames.length > 0
+					? `var ${externalWebpackNames.join(", ")};`
+					: "";
+
+			// The system.register format requires an array of setter functions for externals.
+			const setters =
+				externalWebpackNames.length === 0
+					? ""
+					: Template.asString([
+							"setters: [",
+							Template.indent(
+								externalWebpackNames
+									.map(external =>
+										Template.asString([
+											"function(module) {",
+											Template.indent(`${external} = module;`),
+											"}"
+										])
+									)
+									.join(",\n")
+							),
+							"],"
+					  ]);
+
+			return new ConcatSource(
+				Template.asString([
+					`System.register(${name}${systemDependencies}, function(${dynamicExport}) {`,
+					Template.indent([
+						externalVarDeclarations,
+						"return {",
+						Template.indent([
+							setters,
+							"execute: function() {",
+							Template.indent(`${dynamicExport}(`)
+						])
+					])
+				]) + "\n",
+				source,
+				"\n" +
+					Template.asString([
+						Template.indent([
+							Template.indent([Template.indent([");"]), "}"]),
+							"};"
+						]),
+						"})"
+					])
+			);
+		};
+
+		for (const template of [mainTemplate, chunkTemplate]) {
+			template.hooks.renderWithEntry.tap(
+				"SystemMainTemplatePlugin",
+				onRenderWithEntry
+			);
+		}
+
+		mainTemplate.hooks.globalHashPaths.tap(
+			"SystemMainTemplatePlugin",
+			paths => {
+				if (this.name) {
+					paths.push(this.name);
+				}
+				return paths;
+			}
+		);
+
+		mainTemplate.hooks.hash.tap("SystemMainTemplatePlugin", hash => {
+			hash.update("exports system");
+			if (this.name) {
+				hash.update(this.name);
+			}
+		});
+	}
+}
+
+module.exports = SystemMainTemplatePlugin;