Revision of eventbus.ts

1 file changed, 37 insertions

eventbus.ts(файл создан)

		@@ -0,0 +1,37 @@
1	+
2	+	type Topics = {
3	+	"event.post": EventPost1Data;
4	+
5	+	};
6	+
7	+	type Callbacks<T extends keyof Topics> = (data: Topics[T]) => void;
8	+
9	+	class EventBus<T extends keyof Topics> {
10	+	private subscribers: { [K in T]?: Callbacks<K>[] } = {};
11	+
12	+	subscribe<K extends T>(topic: K, callback: Callbacks<K>): void {
13	+	if (!this.subscribers[topic]) {
14	+	this.subscribers[topic] = [];
15	+	}
16	+	this.subscribers[topic]?.push(callback);
17	+	}
18	+
19	+	unsubscribe<K extends T>(topic: K, callback: Callbacks<K>): void {
20	+	const callbacks = this.subscribers[topic];
21	+	if (callbacks) {
22	+	this.subscribers[topic] = callbacks.filter(cb => cb !== callback);
23	+	}
24	+	}
25	+
26	+	publish<K extends T>(topic: K, payload: Topics[K]): void {
27	+	const callbacks = this.subscribers[topic];
28	+	if (callbacks) {
29	+	for (const callback of callbacks) {
30	+	callback(payload);
31	+	}
32	+	}
33	+	}
34	+	}
35	+
36	+	// Define topics and their corresponding payload types
37	+	export const msgbus = new EventBus();

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