import type { Cell } from '@fortune-sheet/core';
import type { WorkSpreadsheetPivotFilterValue } from './work-types';
export declare function spreadsheetPivotCellValue(cell: Cell | null | undefined): unknown;
export declare function normalizeSpreadsheetPivotFilterValue(value: unknown): WorkSpreadsheetPivotFilterValue;
export declare function spreadsheetPivotFilterValueKey(value: WorkSpreadsheetPivotFilterValue): string;
export declare function displaySpreadsheetPivotValue(value: unknown): string;
export declare function finiteSpreadsheetPivotNumber(value: unknown): number | null;