import { Token } from './lexer.js';
import { Parser } from './parser.js';
export declare class Evaluator {
    variables: Record<string, any>;
    parser: Parser;
    static constants: {
        tau: number;
        pi: number;
        phi: number;
        ln2: number;
        ln10: number;
        log2e: number;
        log10e: number;
    };
    static functions: {
        cos: (x: number) => number;
        acos: (x: number) => number;
        acosh: (x: number) => number;
        sin: (x: number) => number;
        asin: (x: number) => number;
        asinh: (x: number) => number;
        tan: (x: number) => number;
        atan: (x: number) => number;
        atanh: (x: number) => number;
        atan2: (y: number, x: number) => number;
        abs: (x: number) => number;
        ceil: (x: number) => number;
        round: (x: number) => number;
        floor: (x: number) => number;
        exp: (x: number) => number;
        random: () => number;
        sqrt: (x: number) => number;
        cbrt: (x: number) => number;
        log10: (x: number) => number;
        log2: (x: number) => number;
        log: (value: number, base?: number) => number;
        dist: (x1: number, y1: number, x2: number, y2: number) => number;
        gcd: (a: number, b: number) => number;
        max: (...args: any[]) => number;
        min: (...args: any[]) => number;
        hypot: (...args: number[]) => number;
        lcm: (a: number, b: number) => number;
        sum: (...args: any[]) => any;
        mean: (...args: any[]) => number;
        median: (...args: any[]) => any;
        std: (...args: any[]) => number;
        var: (...args: any[]) => number;
        fact: (n: number) => number;
    };
    static multiargFunctions: string[];
    history: Record<string, Token[]>;
    orderedExprs: string[];
    historyLimit: number;
    constructor(variables: Record<string, any>);
    evaluate(expr: string, index?: number): number;
}