export declare const ERROR_PARAM_EMPTY = 0, ERROR_UNEXPECTED_CHAR = 1, ERROR_UNEXPECTED_END = 2;
export type ErrorCode = typeof ERROR_PARAM_EMPTY | typeof ERROR_UNEXPECTED_CHAR | typeof ERROR_UNEXPECTED_END;
export declare class FormatError extends Error {
    readonly code: ErrorCode;
    readonly index: number;
    constructor(code: ErrorCode, index: number, text: string);
}