fix: resolves JS issues introduced in last commit

frontend/client/src/auth.js

@@ -138,7 +138,7 @@ export default class Auth {
 		 * @type {AuthCallback}
 		 * @readonly
 		 */
-		this.callback = function() {};
+		this.callback = function() { /* noop */ };
 
 		/**
 		 * Core instance reference.
@@ -257,6 +257,8 @@ export default class Auth {
 					logger.warn("Exception on login:", e);
 				}
 
+				// TODO: Show something like "incorrect username or password" instead of "Login failed"
+				// if there wasn't a technical error
 				this.ui.emit("login:error", "Login failed");
 				this.ui.emit("login:stop");
 

frontend/client/src/window.js

@@ -515,7 +515,7 @@ export default class Window extends EventEmitter {
 	 * @param {Function} [callback] Callback when window DOM has been constructed
 	 * @returns {Window} this instance
 	 */
-	render(callback = function() {}) {
+	render(callback = function() { /* noop */ }) {
 		if (this.rendered) {
 			return this;
 		} else if (!this.inited) {

frontend/dialogs/src/dialog.js

@@ -113,7 +113,7 @@ export default class Dialog {
 	 * @param {Object} [options.defaultValue] Default callback value
 	 * @param {Function} [callback=function() {}] The callback function
 	 */
-	constructor(core, args, options, callback = function() {}) {
+	constructor(core, args, options, callback = function() { /* noop */ }) {
 		this.core = core;
 		this.args = args;
 		this.callback = callback;

frontend/panels/src/items/windows.js

@@ -82,7 +82,7 @@ export default class WindowsPanelItem extends PanelItem {
 
 					const windows = state.windows
 						.concat([win])
-						.filter((win) => !win.inited || !win.rendered)
+						.filter((w) => !w.inited || !w.rendered)
 						.filter(filterVisibility);
 
 					return { windows };
@@ -208,7 +208,6 @@ export default class WindowsPanelItem extends PanelItem {
 		);
 
 		const children = [...windows, ...special];
-
 		return super.render("windows", children);
 	}
 }