import { ExprElement } from './elements';
/** Expression Error Class */
export declare class ExprError extends Error {
    constructor(name: string, message: string);
    static undefinedVariable(x: string): ExprError;
    static undefinedFunction(x: string): ExprError;
    static uncallableExpression(x: string): ExprError;
    static evalLoop(x: string): ExprError;
    static invalidCharacter(x: string): ExprError;
    static conflictingBrackets(x: string): ExprError;
    static unclosedBracket(x: string): ExprError;
    static startOperator(x: ExprElement): ExprError;
    static endOperator(x: ExprElement): ExprError;
    static consecutiveOperators(x: string, y: string): ExprError;
    static invalidExpression(): ExprError;
}