import { DepositData, LzQuoteData, QuoteData } from '../types';
export declare class Helpers {
    static buf2hex(input: Buffer): string;
    static hexToBuf(v: string): Buffer;
    static concatRSV(r: Buffer, s: Buffer, v: number): string;
    static padToEven(a: string): string;
    static stripHexPrefix(str: string): string;
    static isHexPrefixed(str: string): boolean;
    static timestamp(): number;
    static setExpiry(time: number): number;
    static hashMessage(message: string): string;
    static hashQuoteData(quoteData: QuoteData, chainId: number): string;
    static hashLzQuoteData(quoteData: LzQuoteData): string;
    static hashDepositData(depositData: DepositData): string;
}