import type { FormulaErrorValue } from "./formulaErrors.mjs";
import type { FormulaBinaryOperator } from "./formulaAst.mjs";
/**
 * Coercion to the numeric context (`+ - * / ^`, math functions).
 * number -> itself; string -> trimmed strict parse; boolean -> 1/0;
 * empty -> 0; Date -> epoch milliseconds (documented deviation from Excel serial dates).
 */
export declare function toFormulaNumber(value: unknown): number | FormulaErrorValue;
/**
 * Coercion to the text context (`&`, text functions).
 * Numbers serialize with `.` decimal separator, locale-independent.
 */
export declare function toFormulaText(value: unknown): string | FormulaErrorValue;
/**
 * Coercion to the boolean context (IF condition, AND/OR/NOT).
 */
export declare function toFormulaBoolean(value: unknown): boolean | FormulaErrorValue;
/**
 * Empty-cell test: `null`/`undefined` are empty; `0`, `''` and `false` are not.
 */
export declare function isEmptyFormulaValue(value: unknown): boolean;
type ComparisonOperator = Extract<FormulaBinaryOperator, '=' | '<>' | '<' | '<=' | '>' | '>='>;
/**
 * Comparison semantics shared by the evaluator and function implementations.
 * Equality across different types is FALSE; ordered comparison across
 * different types is `#VALUE!` (deliberate deviation from Excel's total order).
 * All string comparisons are case-insensitive (Excel behavior); the decision
 * is isolated here so it stays one-line reversible.
 */
export declare function compareFormulaScalars(operator: ComparisonOperator, left: unknown, right: unknown): boolean | FormulaErrorValue;
export {};