import { ethers } from "ethers";
export declare function getNumBytes(hexStr: string | undefined | null): number;
export declare function bytes32(data: string | number | ethers.BigNumberish): string;
export declare function bytes32OrNull(data: string | number | ethers.BigNumberish | undefined | null): string | null;
export declare function toLeHex(data: string, numBytes: number): string;
export declare function resizeArray(arr: string[], size: number, defaultValue: string): string[];
export declare function validateAddress(address: string): void;
export declare function validateBytes4(bytes: string): void;
export declare function validateBytes32(bytes32: string): void;
export declare function removeZerosLeft(hex: string): string;
export declare function shortenedHex(num: number): string;