import { Channel } from './channel/base';
import { HookContext } from '@ihadeed/feathers';
declare const PUBLISHERS: unique symbol;
declare const CHANNELS: unique symbol;
declare const ALL_EVENTS: unique symbol;
export declare const keys: {
    PUBLISHERS: typeof PUBLISHERS;
    CHANNELS: typeof CHANNELS;
    ALL_EVENTS: typeof ALL_EVENTS;
};
export interface ChannelMixin {
    [CHANNELS]: {
        [key: string]: Channel;
    };
    channel(...names: string[]): Channel;
}
export declare function channelMixin(): ChannelMixin;
export declare type Event = string | (typeof ALL_EVENTS);
export declare type Publisher<T = any> = (data: T, hook: HookContext<T>) => Channel | Channel[] | void | Promise<Channel | Channel[] | void>;
export interface PublishMixin<T = any> {
    [PUBLISHERS]: {
        [ALL_EVENTS]?: Publisher<T>;
        [key: string]: Publisher<T>;
    };
    publish(event: Event, publisher: Publisher<T>): this;
    registerPublisher(event: Event, publisher: Publisher<T>): this;
}
export declare function publishMixin(): PublishMixin<any>;
export {};