Created
May 8, 2023 10:29
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Custom Event Bus Using React/Typescript
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| export interface Subscriber { | |
| name: string | |
| callback: (data: any) => void | |
| } | |
| class EventBus { | |
| private static instance: EventBus | undefined | |
| private subscribers: Map<string, Array<Subscriber>> | |
| constructor() { | |
| this.subscribers = new Map(); | |
| } | |
| public static getInstance() { | |
| if (EventBus.instance === undefined) { | |
| EventBus.instance = new EventBus(); | |
| } | |
| return EventBus.instance; | |
| } | |
| public async publish(topicName: string, data: any) { | |
| let subscribers = this.subscribers.get(topicName); | |
| console.log(subscribers); | |
| subscribers!.forEach(s => s.callback(data)); | |
| } | |
| public async subscribe(topicName: string, subscriber: Subscriber) { | |
| if (!this.subscribers.has(topicName)) { | |
| this.subscribers.set(topicName, []); | |
| } | |
| let subscriberList = this.subscribers.get(topicName); | |
| subscriberList!.push(subscriber); | |
| } | |
| public async remove(topicName: string, subscriberName: string) { | |
| let subscriberList = this.subscribers.get(topicName)!; | |
| this.subscribers.set(topicName, subscriberList.filter(s => s.name !== subscriberName)) | |
| } | |
| } | |
| export default EventBus; |
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