export class Event<D extends Record<string, any>> {
  on<K extends keyof D>(type: K, fn: { (data: D[K]): void }, context?: any, once?: boolean)

  off<K extends keyof D>(type: K, fn: { (data: D[K]): void }, context?: any)

  hasEvents<K extends keyof D>(type: K, fn: { (data: D[K]): void }, context?: any)

  clearEvents<K extends keyof D>(type: K)

  emit<K extends keyof D>(type: K, data: any)
}