Angular Signals for AI Chat State Management (2026)

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Source code: munonye-ai-chat-spring-angular on GitHub

Estimated reading time: 12–15 minutes · Last updated: July 1, 2026

Angular signals tutorial 2026 for AI chat apps — extend M7-B chat UI with computed and effect. From the Angular tutorials hub.

messages = signal<ChatMessage[]>([]);
lastMessage = computed(() => {
  const m = this.messages();
  return m.length ? m[m.length - 1] : null;
});
isWaiting = computed(() => this.loading());

constructor() {
  effect(() => {
    this.messages(); // trigger scroll when messages change
    queueMicrotask(() => this.scrollToBottom());
  });
}

Cross-link reactive forms guide for validated prompt inputs.

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