update

pi-mono-reference/packages/coding-agent/src/core/event-bus.ts

@@ -0,0 +1,33 @@
+import { EventEmitter } from "node:events";
+
+export interface EventBus {
+	emit(channel: string, data: unknown): void;
+	on(channel: string, handler: (data: unknown) => void): () => void;
+}
+
+export interface EventBusController extends EventBus {
+	clear(): void;
+}
+
+export function createEventBus(): EventBusController {
+	const emitter = new EventEmitter();
+	return {
+		emit: (channel, data) => {
+			emitter.emit(channel, data);
+		},
+		on: (channel, handler) => {
+			const safeHandler = async (data: unknown) => {
+				try {
+					await handler(data);
+				} catch (err) {
+					console.error(`Event handler error (${channel}):`, err);
+				}
+			};
+			emitter.on(channel, safeHandler);
+			return () => emitter.off(channel, safeHandler);
+		},
+		clear: () => {
+			emitter.removeAllListeners();
+		},
+	};
+}