import { BroadcastEvent, EventChannel } from '../lib/EventChannel';
export declare function resetAll(): void;
export declare function setChannelsPaused(paused: boolean): void;
export declare class MemoryBroadcastChannel<T> {
    private readonly _onMessage;
    private _closed;
    private _paused;
    private readonly _channels;
    private _postMessageQueue;
    private _onMessageQueue;
    constructor(channelName: string, _onMessage: (value: T) => void);
    set paused(paused: boolean);
    onMessage(message: T): void;
    postMessage(message: T): Promise<void>;
    close(): void;
}
export declare class MemoryEventChannel<CommitMetadata, Delta, Presence> implements EventChannel<CommitMetadata, Delta, Presence> {
    readonly broadcastChannel: MemoryBroadcastChannel<BroadcastEvent<CommitMetadata, Delta, Presence>>;
    readonly onEventCallbacks: ((e: BroadcastEvent<CommitMetadata, Delta, Presence>) => void)[];
    constructor(channelName: string);
    private _onMessage;
    onEvent(cb: (ev: BroadcastEvent<CommitMetadata, Delta, Presence>) => void): void;
    sendEvent(ev: BroadcastEvent<CommitMetadata, Delta, Presence>): Promise<void>;
    shutdown(): void | Promise<void>;
    set paused(paused: boolean);
}