type AnyHandler = (...args: any) => void;
export type RemoveListenerCallback = () => void | undefined;
export type Event<F extends AnyHandler> = {
    toArray: () => F[];
    length: number;
    on: (fn: F) => RemoveListenerCallback;
    emit: (...arg: Parameters<F>) => void;
};
export interface EventMap {
    [key: string]: AnyHandler;
}
export type Events<EM extends EventMap = EventMap> = {
    on<Name extends keyof EM, Handler = EM[Name]>(type: Name, handler: Handler): RemoveListenerCallback;
    emit<Name extends keyof EM, Handler extends AnyHandler = EM[Name]>(type: string, ...args: Parameters<Handler>): void;
};
export declare function createEvent<F extends AnyHandler>(): Event<F>;
export declare function createEvents<EM extends EventMap = EventMap>(): Events<EM>;
export {};