| // eslint-disable-next-line @typescript-eslint/no-explicit-any | |
| export type EventHandler = (data: any) => void; | |
| export class EventBus { | |
| private static instance: EventBus; | |
| private handlers: Map<string, EventHandler[]> = new Map(); | |
| private constructor() {} | |
| static getInstance(): EventBus { | |
| if (!EventBus.instance) { | |
| EventBus.instance = new EventBus(); | |
| } | |
| return EventBus.instance; | |
| } | |
| on(event: string, handler: EventHandler): void { | |
| if (!this.handlers.has(event)) { | |
| this.handlers.set(event, []); | |
| } | |
| this.handlers.get(event)!.push(handler); | |
| } | |
| off(event: string, handler: EventHandler): void { | |
| const handlers = this.handlers.get(event); | |
| if (handlers) { | |
| this.handlers.set( | |
| event, | |
| handlers.filter((h) => h !== handler) | |
| ); | |
| } | |
| } | |
| emit(event: string, data?: unknown): void { | |
| this.handlers.get(event)?.forEach((handler) => handler(data)); | |
| } | |
| clear(): void { | |
| this.handlers.clear(); | |
| } | |
| } | |