import type { PdfCollaborationDocument } from "./pdf-collaboration-types.js";
export type CollaborationPollHandle = {
    stop: () => void;
    pollNow: () => Promise<void>;
};
/** Poll remote collaboration document; skips apply when updatedAt matches local. */
export declare function attachCollaborationPolling(options: {
    pollIntervalMs: number;
    loadDocument: () => Promise<PdfCollaborationDocument | null>;
    getLocalUpdatedAt: () => string;
    onRemote: (doc: PdfCollaborationDocument) => void;
    onError?: (message: string) => void;
}): CollaborationPollHandle;
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