import { Network } from '@xchainjs/xchain-client';
import { Address } from '@xchainjs/xchain-util';
import { UTXO } from '@xchainjs/xchain-utxo';
import * as Bitcoin from 'bitcoinjs-lib';
export declare const TX_EMPTY_SIZE: number;
export declare const TX_INPUT_BASE: number;
export declare const TX_INPUT_PUBKEYHASH = 107;
export declare const TX_OUTPUT_BASE: number;
export declare const TX_OUTPUT_PUBKEYHASH = 25;
/**
 * Function to calculate the size of an input in a transaction.
 * @param {UTXO} input - The UTXO (Unspent Transaction Output) for which to calculate the size.
 * @returns {number} The size of the input.
 */
export declare const inputBytes: (input: UTXO) => number;
/**
 * Function to calculate the average value of an array of numbers.
 * @param {number[]} array - The array of numbers.
 * @returns {number} The average value of the array.
 */
export declare const arrayAverage: (array: number[]) => number;
/**
 * Function to get the Bitcoin network to be used with bitcoinjs.
 *
 * @param {Network} network - The network type (Mainnet, Testnet, or Stagenet).
 * @returns {Bitcoin.Network} The Bitcoin network.
 */
export declare const btcNetwork: (network: Network) => Bitcoin.Network;
/**
 * Function to validate a Bitcoin address.
 * @param {Address} address - The Bitcoin address to validate.
 * @param {Network} network - The network type (Mainnet, Testnet, or Stagenet).
 * @returns {boolean} `true` if the address is valid, `false` otherwise.
 */
export declare const validateAddress: (address: Address, network: Network) => boolean;
/**
 * Function to get the address prefix based on the network.
 * @param {Network} network - The network type (Mainnet, Testnet, or Stagenet).
 * @returns {string} The address prefix based on the network.
 */
export declare const getPrefix: (network: Network) => string;
/**
 * Converts a public key to an X-only public key.
 * @param pubKey The public key to convert.
 * @returns The X-only public key.
 */
export declare const toXOnly: (pubKey: Buffer) => Buffer;