denisputnov

import {useEffect} from 'react';

type EventKey = string;
type EventHandler<T = any> = (payload: T) => void;
type EventMap = Record<EventKey, EventHandler>;
type Bus<E> = Record<keyof E, E[keyof E][]>;

interface EventBus<T extends EventMap> {
  on<Key extends keyof T>(key: Key, handler: T[Key]): () => void;
  off<Key extends keyof T>(key: Key, handler: T[Key]): void;