/**
 * Create a typed event hook that can be triggered and subscribed to.
 *
 * @example
 * ```ts
 * const onFetch = createEventHook<Response>()
 * onFetch.on((response) => console.log(response))
 * onFetch.trigger(new Response())
 * ```
 */
export declare function createEventHook<T = any>(): EventHookOn<T>;
export declare interface EventHookOn<T = any> {
  on: (fn: (param: T) => void) => { off: () => void }
  off: (fn: (param: T) => void) => void
  trigger: (param: T) => void
}