/// <reference types="node" />
/**
 * Convert a little-endian buffer into a BigInt.
 * @param buf The little-endian buffer to convert
 * @returns A BigInt with the little-endian representation of buf.
 */
export declare function toBigIntLE(buf: Buffer): bigint;
/**
 * Convert a big-endian buffer into a BigInt
 * @param buf The big-endian buffer to convert.
 * @returns A BigInt with the big-endian representation of buf.
 */
export declare function toBigIntBE(buf: Buffer): bigint;
/**
 * Convert a BigInt to a little-endian buffer.
 * @param num   The BigInt to convert.
 * @param width The number of bytes that the resulting buffer should be.
 * @returns A little-endian buffer representation of num.
 */
export declare function toBufferLE(num: bigint, width: number): Buffer;
/**
 * Convert a BigInt to a big-endian buffer.
 * @param num   The BigInt to convert.
 * @param width The number of bytes that the resulting buffer should be.
 * @returns A big-endian buffer representation of num.
 */
export declare function toBufferBE(num: bigint, width: number): Buffer;