import type { Checkpoint, CommandCatalog, Domain, Stop } from './types.js';
export interface RelayMessage<State> {
    readonly source: string;
    readonly domain: string;
    readonly sentAt: number;
    readonly checkpoint: Checkpoint<State>;
}
export interface RelayPort<State> {
    send(message: RelayMessage<State>): void;
    listen(listener: (message: RelayMessage<State>) => void): Stop;
    close?(): void;
}
export interface RelayBinding {
    stop(): void;
}
export interface RelayOptions<State> {
    readonly source?: string;
    readonly accept?: (incoming: RelayMessage<State>, current: Checkpoint<State>) => boolean;
    readonly onFault?: (error: unknown) => void;
}
export declare function broadcastRelay<State>(channelName: string): RelayPort<State>;
export declare function bindRelay<State, Commands extends CommandCatalog<State>>(domain: Domain<State, Commands>, port: RelayPort<State>, sourceOrOptions?: string | RelayOptions<State>): RelayBinding;
//# sourceMappingURL=relay.d.ts.map