import { BigNumberish } from "@ethersproject/bignumber";
import * as rlp from "@ethersproject/rlp";
export declare const RLP: {
    encode: typeof rlp.encode;
    decode: typeof rlp.decode;
};
export declare const HexStr: {
    toNumber(value: string): number;
    fromNumber(value: BigNumberish): string;
    from(value: any): string;
    concat(...items: string[]): string;
    isHex(value: any, length?: number): boolean;
    stripZeros(value: any): string;
    zeroPad(value: string, length: number): string;
    withHexPrefix(value: string): string;
    stripHexPrefix(value: string): string;
    toAddress(value?: string | null): string;
    toBoolean(value: string): boolean;
};
export declare function getTypePrefix(rlp: string): number;