import { type WorkOfficeCollaborationFlatJsonMap } from './office-collaboration-flat-json';
/**
 * Recursively flattens object fields into one stable Y.Map. Arrays remain atomic
 * because their positional meaning varies across OOXML features. This avoids a
 * concurrent first-write race for nested Y.Map instances while still letting
 * independent object leaves converge.
 */
export declare function patchSpreadsheetFlatJsonMap(target: SpreadsheetFlatJsonMap, previous: Record<string, unknown> | undefined, next: Record<string, unknown> | undefined, label: string): void;
export declare function readSpreadsheetFlatJsonMap(target: SpreadsheetFlatJsonMap, label: string): Record<string, unknown>;
export type SpreadsheetFlatJsonMap = WorkOfficeCollaborationFlatJsonMap;