/******************************************************************************
 *
 *  (C) 2022 AhnLab Blockchain Company, Inc. All rights reserved.
 *  Any part of this source code can not be copied with any method without
 *  prior written permission from the author or authorized person.
 *
 ******************************************************************************/
import BN from 'bn.js';
/**
 * Checks whether a given balance of ETH, represented as a hex string, is sufficient to pay a value plus a gas fee
 *
 * @param {Object} txParams - Contains data about a transaction
 * @param {string} txParams.gas - The gas for a transaction
 * @param {string} txParams.gasPrice - The price per gas for the transaction
 * @param {string} txParams.value - The value of ETH to send
 * @param {string} hexBalance - A balance of ETH represented as a hex string
 * @returns {boolean} Whether the balance is greater than or equal to the value plus the value of gas times gasPrice
 *
 */
declare function sufficientBalance(txParams: any, hexBalance: any): boolean;
/**
 * Converts a hex string to a BN object
 *
 * @param {string} inputHex - A number represented as a hex string
 * @returns {Object} A BN object
 *
 */
declare function hexToBn(inputHex: string): BN;
/**
 * Used to multiply a BN by a fraction
 *
 * @param {BN} targetBN - The number to multiply by a fraction
 * @param {number|string} numerator - The numerator of the fraction multiplier
 * @param {number|string} denominator - The denominator of the fraction multiplier
 * @returns {BN} The product of the multiplication
 *
 */
declare function BnMultiplyByFraction(targetBN: any, numerator: any, denominator: any): any;
/**
 * Returns an Error if extension.runtime.lastError is present
 * this is a workaround for the non-standard error object that's used
 * @returns {Error|undefined}
 */
declare function checkForError(): any;
/**
 * Prefixes a hex string with '0x' or '-0x' and returns it. Idempotent.
 *
 * @param {string} str - The string to prefix.
 * @returns {string} The prefixed string.
 */
declare const addHexPrefix: (str: any) => any;
/**
 * Converts a BN object to a hex string with a '0x' prefix
 *
 * @param {BN} inputBn - The BN to convert to a hex string
 * @returns {string} - A '0x' prefixed hex string
 *
 */
declare function bnToHex(inputBn: any): any;
export { sufficientBalance, hexToBn, BnMultiplyByFraction, checkForError, addHexPrefix, bnToHex };