TypeScript!

ui/notifications.ts

@@ -0,0 +1,23 @@
+import m from "mithril";
+
+interface Notification {
+  type: string;
+  message: string;
+  timestamp: number;
+}
+
+const notifications = new Set<Notification>();
+
+export function push(type, message): void {
+  const n = { type: type, message: message, timestamp: Date.now() };
+  notifications.add(n);
+  m.redraw();
+  setTimeout(() => {
+    notifications.delete(n);
+    m.redraw();
+  }, 4000);
+}
+
+export function getNotifications(): Set<Notification> {
+  return notifications;
+}