/**
 * Copyright (c) 2018-2023, BOTLabs GmbH.
 *
 * This source code is licensed under the BSD 4-Clause "Original" license
 * found in the LICENSE file in the root directory of this source tree.
 */
/// <reference types="bn.js" />
import { BN } from '@polkadot/util';
import type { BalanceNumber, BalanceOptions, MetricPrefix } from '@kiltprotocol/types';
export declare const KILT_COIN: BN;
export declare const Prefixes: Map<MetricPrefix, number>;
/**
 * Uses the polkadot.js balance formatter, to convert given BN to a human-readable prefixed number.
 *
 * @param amount BN to format.
 * @param additionalOptions Optional formatting settings, these are defaulted to KILT specific settings.
 * @returns String representation of the given BN with prefix and unit ('KILT' as default).
 */
export declare function formatKiltBalance(amount: BalanceNumber, additionalOptions?: BalanceOptions): string;
/**
 * Converts balance from KILT denomination to base unit.
 *
 * @param balance Balance in KILT denomination.
 * @param power Allows modifying conversion. Set to 0 for conversion to base unit, set to <0 for various larger denominations. -15 is KILT denomination.
 * @returns Converted (redenominated) balance.
 */
export declare function convertToTxUnit(balance: BN, power: number): BN;
export declare const TRANSACTION_FEE: BN;
/**
 * Safely converts the given [[BalanceNumber]] to a string, using the supplied methods,
 * or if given a string checks for valid number representation.
 *
 * @param input [[BalanceNumber]] to convert.
 * @returns String representation of the given [[BalanceNumber]].
 */
export declare function balanceNumberToString(input: BalanceNumber): string;
/**
 * Converts the given [[BalanceNumber]] to the femto KILT equivalent.
 *
 * @param input [[BalanceNumber]] to convert.
 * @param unit Metric prefix of the given [[BalanceNumber]].
 * @returns Exact BN representation in femtoKilt, to use in transactions and calculations.
 */
export declare function toFemtoKilt(input: BalanceNumber, unit?: MetricPrefix): BN;
/**
 * Converts the given [[BalanceNumber]] to a human-readable number with metric prefix and Unit.
 * This function uses the polkadot formatBalance function,
 * it's output can therefore be formatted via the polkadot formatting options.
 *
 * @param input [[BalanceNumber]] to convert from Femto Kilt.
 * @param decimals Set the minimum decimal places in the formatted localized output, default is 4.
 * @param options [[BalanceOptions]] for internationalization and formatting.
 * @returns String representation of the given [[BalanceNumber]] with unit und metric prefix.
 */
export declare function fromFemtoKilt(input: BalanceNumber, decimals?: number, options?: BalanceOptions): string;