import * as Matrix from '../matrix';
import { CellBase } from '../types';
export declare const FORMULA_VALUE_PREFIX = "=";
/** Returns whether given value is a formula */
export declare function isFormulaValue(value: unknown): value is string;
/** Extracts formula from value  */
export declare function extractFormula(value: string): string;
export declare function createFormulaParser(data: Matrix.Matrix<CellBase>): Matrix.Matrix<CellBase>;
export declare function evaluate(): string;