export declare function joinHexData(hexData: string[]): string;
export declare function getHexDataLength(hexData: string): number;
export declare function abiEncodePacked(...params: {
    type: string;
    value: any;
}[]): string;
export declare function is32ByteHexString(data: any): boolean;
export declare function validateTransactionParams({ to, data, gasLimit, gas, relayAddress, }: {
    to?: string;
    data?: string;
    gasLimit?: string;
    gas?: string;
    relayAddress?: string;
}): void;