/// <reference types="node" />
/**
* Throws if a string is not hex prefixed
* @param {string} input string to check hex prefix of
*/
export declare const assertIsHexString: (input: string) => void;
/**
* Throws if input is not a buffer
* @param {Buffer} input value to check
*/
export declare const assertIsBuffer: (input: Buffer) => void;
/**
* Throws if input is not an array
* @param {number[]} input value to check
*/
export declare const assertIsArray: (input: number[]) => void;
/**
* Throws if input is not a string
* @param {string} input value to check
*/
export declare const assertIsString: (input: string) => void;
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