Update

src/app/chat/elements/message-box/message-box-viewmodel.ts

@@ -0,0 +1,11 @@
+import {signal} from '@angular/core';
+
+export class MessageBoxViewModel {
+  onMessageSend: (message: string) => void
+
+  constructor(onMessageSend: (message: string) => void) {
+    this.onMessageSend = onMessageSend
+  }
+
+  message = signal<string>("")
+}