import { Editor } from '../../../core/Editor.js';
/**
 * Part-sync consumer: Yjs `parts` map changes → local mutation core.
 *
 * Observes the Yjs `parts` map for remote changes and applies them locally
 * via `mutateParts`. Each part is validated individually — a single bad part
 * does not block the rest.
 */
import * as Y from 'yjs';
export interface PartConsumer {
    /** Tear down the Yjs observer. */
    destroy(): void;
}
export declare function isApplyingRemotePartChanges(): boolean;
export declare function createPartConsumer(editor: Editor, ydoc: Y.Doc): PartConsumer;
/**
 * Full-replace a part's data with remote data.
 * Clears all existing keys, then copies from source.
 */
export declare function replacePartData(target: unknown, source: unknown): void;
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