export type RemoteEventKind = 'nodes' | 'inbox';
export interface RemoteEventStreamOptions {
    /** Initial reconnect backoff (ms). Default 1000; injectable so tests don't
     *  have to wait out the production backoff window. */
    initialBackoffMs?: number;
    /** Reconnect backoff cap (ms). Default 30_000. */
    backoffCapMs?: number;
}
export declare class RemoteEventStream {
    private readonly previewEndpoint;
    private readonly relayToken;
    private controller;
    private stopped;
    private readonly listeners;
    private readonly initialBackoffMs;
    private backoffMs;
    private readonly BACKOFF_CAP_MS;
    private reconnectTimer;
    constructor(previewEndpoint: string, relayToken: string, opts?: RemoteEventStreamOptions);
    subscribe(fn: (kind: RemoteEventKind) => void): () => void;
    start(): void;
    stop(): void;
    private loop;
}