import { StateUpdateMessage } from "../types/collaborative/transport_service";
import { UID } from "../types/misc";
import { ExcelSheetData, ExcelWorkbookData, SheetData, WorkbookData } from "../types/workbook_data";
/**
 * Represents the current version of the exported JSON data.
 * A new version must be created whenever a breaking change is introduced in the export format.
 * To define a new version, add an upgrade function to `migrationStepRegistry`.
 */
export declare function getCurrentVersion(): string;
/**
 * This function tries to load anything that could look like a valid
 * workbookData object. It applies any migrations, if needed, and return a
 * current, complete workbookData object.
 *
 * It also ensures that there is at least one sheet.
 */
export declare function load(data?: any, verboseImport?: boolean): WorkbookData;
/**
 * This function is used to repair faulty data independently of the migration.
 */
export declare function repairData(data: Partial<WorkbookData>): Partial<WorkbookData>;
/**
 * The goal of this function is to repair corrupted/wrong initial messages caused by
 * a bug.
 * The bug should obviously be fixed, but it's too late for existing spreadsheet.
 */
export declare function repairInitialMessages(data: Partial<WorkbookData>, initialMessages: StateUpdateMessage[]): StateUpdateMessage[];
export declare function createEmptySheet(sheetId: UID, name: string): SheetData;
export declare function createEmptyWorkbookData(sheetName?: string): WorkbookData;
export declare function createEmptyExcelSheet(sheetId: UID, name: string): ExcelSheetData;
export declare function createEmptyExcelWorkbookData(): ExcelWorkbookData;