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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 | 309x 309x 309x 309x 309x 309x 309x 309x | // useErrorEmitter.ts
import { useEffect, useState } from "react";
export type ErrorListener<T> = (payload: T) => void;
interface Subscription {
eventName: string;
listener: ErrorListener<any>;
}
export class GiveErrorEmitter {
private subscriptions: Subscription[] = [];
private static instance: GiveErrorEmitter | null = null;
private constructor() {
this.subscriptions = [];
}
static getInstance(): GiveErrorEmitter {
Eif (!GiveErrorEmitter.instance) {
GiveErrorEmitter.instance = new GiveErrorEmitter();
GiveErrorEmitter.instance.subscriptions = [];
}
return GiveErrorEmitter.instance;
}
subscribe(eventName: string, listener: ErrorListener<any>): () => void {
const subscription: Subscription = { eventName, listener };
this.subscriptions.push(subscription);
return () => {
this.subscriptions = this.subscriptions.filter((s) => s !== subscription);
};
}
castError(eventName: string, payload: any): void {
const relevantListeners = this.subscriptions.filter(
(s) => s.eventName === eventName,
);
relevantListeners.forEach((subscription) => subscription.listener(payload));
}
clearListeners(eventName?: string): void {
if (eventName) {
this.subscriptions = this.subscriptions.filter(
(s) => s.eventName !== eventName,
);
} else {
this.subscriptions = [];
}
}
}
export const ErrorEmitter = GiveErrorEmitter.getInstance();
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