1 files changed, 167 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/dependencies/SystemPlugin.js b/node_modules/webpack/lib/dependencies/SystemPlugin.js
new file mode 100644
index 00000000..80993379
--- /dev/null
+++ b/node_modules/webpack/lib/dependencies/SystemPlugin.js
@@ -0,0 +1,167 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const {
+	JAVASCRIPT_MODULE_TYPE_AUTO,
+	JAVASCRIPT_MODULE_TYPE_DYNAMIC
+} = require("../ModuleTypeConstants");
+const RuntimeGlobals = require("../RuntimeGlobals");
+const WebpackError = require("../WebpackError");
+const {
+	evaluateToString,
+	expressionIsUnsupported,
+	toConstantDependency
+} = require("../javascript/JavascriptParserHelpers");
+const makeSerializable = require("../util/makeSerializable");
+const ConstDependency = require("./ConstDependency");
+const SystemRuntimeModule = require("./SystemRuntimeModule");
+
+/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
+/** @typedef {import("../Compiler")} Compiler */
+/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
+/** @typedef {import("../javascript/JavascriptParser")} Parser */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+
+const PLUGIN_NAME = "SystemPlugin";
+
+class SystemPlugin {
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		compiler.hooks.compilation.tap(
+			PLUGIN_NAME,
+			(compilation, { normalModuleFactory }) => {
+				compilation.hooks.runtimeRequirementInModule
+					.for(RuntimeGlobals.system)
+					.tap(PLUGIN_NAME, (module, set) => {
+						set.add(RuntimeGlobals.requireScope);
+					});
+
+				compilation.hooks.runtimeRequirementInTree
+					.for(RuntimeGlobals.system)
+					.tap(PLUGIN_NAME, (chunk, set) => {
+						compilation.addRuntimeModule(chunk, new SystemRuntimeModule());
+					});
+
+				/**
+				 * @param {Parser} parser parser parser
+				 * @param {JavascriptParserOptions} parserOptions parserOptions
+				 * @returns {void}
+				 */
+				const handler = (parser, parserOptions) => {
+					if (parserOptions.system === undefined || !parserOptions.system) {
+						return;
+					}
+
+					/**
+					 * @param {string} name name
+					 */
+					const setNotSupported = name => {
+						parser.hooks.evaluateTypeof
+							.for(name)
+							.tap(PLUGIN_NAME, evaluateToString("undefined"));
+						parser.hooks.expression
+							.for(name)
+							.tap(
+								PLUGIN_NAME,
+								expressionIsUnsupported(
+									parser,
+									name + " is not supported by webpack."
+								)
+							);
+					};
+
+					parser.hooks.typeof
+						.for("System.import")
+						.tap(
+							PLUGIN_NAME,
+							toConstantDependency(parser, JSON.stringify("function"))
+						);
+					parser.hooks.evaluateTypeof
+						.for("System.import")
+						.tap(PLUGIN_NAME, evaluateToString("function"));
+					parser.hooks.typeof
+						.for("System")
+						.tap(
+							PLUGIN_NAME,
+							toConstantDependency(parser, JSON.stringify("object"))
+						);
+					parser.hooks.evaluateTypeof
+						.for("System")
+						.tap(PLUGIN_NAME, evaluateToString("object"));
+
+					setNotSupported("System.set");
+					setNotSupported("System.get");
+					setNotSupported("System.register");
+
+					parser.hooks.expression.for("System").tap(PLUGIN_NAME, expr => {
+						const dep = new ConstDependency(
+							RuntimeGlobals.system,
+							/** @type {Range} */ (expr.range),
+							[RuntimeGlobals.system]
+						);
+						dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+						parser.state.module.addPresentationalDependency(dep);
+						return true;
+					});
+
+					parser.hooks.call.for("System.import").tap(PLUGIN_NAME, expr => {
+						parser.state.module.addWarning(
+							new SystemImportDeprecationWarning(
+								/** @type {DependencyLocation} */ (expr.loc)
+							)
+						);
+
+						return parser.hooks.importCall.call({
+							type: "ImportExpression",
+							source:
+								/** @type {import("estree").Literal} */
+								(expr.arguments[0]),
+							loc: expr.loc,
+							range: expr.range
+						});
+					});
+				};
+
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_AUTO)
+					.tap(PLUGIN_NAME, handler);
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
+					.tap(PLUGIN_NAME, handler);
+			}
+		);
+	}
+}
+
+class SystemImportDeprecationWarning extends WebpackError {
+	/**
+	 * @param {DependencyLocation} loc location
+	 */
+	constructor(loc) {
+		super(
+			"System.import() is deprecated and will be removed soon. Use import() instead.\n" +
+				"For more info visit https://webpack.js.org/guides/code-splitting/"
+		);
+
+		this.name = "SystemImportDeprecationWarning";
+
+		this.loc = loc;
+	}
+}
+
+makeSerializable(
+	SystemImportDeprecationWarning,
+	"webpack/lib/dependencies/SystemPlugin",
+	"SystemImportDeprecationWarning"
+);
+
+module.exports = SystemPlugin;
+module.exports.SystemImportDeprecationWarning = SystemImportDeprecationWarning;