Initial commit: notification-elements-demo app

Interactive Angular 19 demo for @sda/notification-elements-ui with
6 sections: Bell & Feed, Notification Center, Inbox, Comments &
Threads, Mention Input, and Full-Featured layout. Includes mock
data, dark mode toggle, and real-time event log.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/webpack/lib/dependencies/HarmonyTopLevelThisParserPlugin.js

@@ -0,0 +1,39 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Florent Cailhol @ooflorent
+*/
+
+"use strict";
+
+const ConstDependency = require("./ConstDependency");
+const HarmonyExports = require("./HarmonyExports");
+
+/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
+/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+
+class HarmonyTopLevelThisParserPlugin {
+	/**
+	 * @param {JavascriptParser} parser the parser
+	 * @returns {void}
+	 */
+	apply(parser) {
+		parser.hooks.expression
+			.for("this")
+			.tap("HarmonyTopLevelThisParserPlugin", node => {
+				if (!parser.scope.topLevelScope) return;
+				if (HarmonyExports.isEnabled(parser.state)) {
+					const dep = new ConstDependency(
+						"undefined",
+						/** @type {Range} */ (node.range),
+						null
+					);
+					dep.loc = /** @type {DependencyLocation} */ (node.loc);
+					parser.state.module.addPresentationalDependency(dep);
+					return true;
+				}
+			});
+	}
+}
+
+module.exports = HarmonyTopLevelThisParserPlugin;