import * as bitcoin from 'bitcoinjs-lib';
import type { Secp256k1PrivateKeyBytes } from '../../cryptography';
import type { BitcoinAddress, Brand, TransactionHex } from '../../types';
import type { BitcoinUtxo } from './api';
export type BitcoinOutputScript = Brand<Uint8Array, 'BitcoinOutputScript'>;
type BuildSweepTransactionParams = {
    accountId: string;
    fromAddress: BitcoinAddress;
    outputScript: BitcoinOutputScript;
    utxos: BitcoinUtxo[];
    feeRateSatsPerVByte: number;
    privateKey: Secp256k1PrivateKeyBytes;
    network: bitcoin.Network;
};
/**
 * Validates a Bitcoin destination address for the given network and returns its output script.
 *
 * Supports P2PKH, P2SH, P2WPKH, P2WSH, and P2TR (Taproot / bech32m) address types.
 * The output script is returned so callers can pass it directly to estimateSweepTransaction /
 * buildSweepTransaction without recomputing it.
 *
 * @returns The validated address and its compiled output script
 * @throws {InvalidDestinationAddressError} If the address is not valid for the network
 */
export declare function validateBitcoinDestinationAddress(destinationAddress: string, network: bitcoin.Network): {
    address: BitcoinAddress;
    outputScript: BitcoinOutputScript;
};
/**
 * Calculates the fee and net send amount for a sweep transaction without broadcasting.
 *
 * @returns `amountToSend` (totalInputValue - fee) and `fee` in satoshis.
 * @throws {NoWithdrawableAssetsError} If the net amount is zero, negative, or below the
 *   dust limit for the destination output type (Bitcoin nodes reject sub-dust outputs)
 */
export declare function estimateSweepTransaction({ accountId, outputScript, utxos, feeRateSatsPerVByte }: Pick<BuildSweepTransactionParams, 'accountId' | 'outputScript' | 'utxos' | 'feeRateSatsPerVByte'>): {
    amountToSend: bigint;
    fee: bigint;
};
/**
 * Builds, signs, and serializes a P2WPKH sweep transaction.
 *
 * Spends all provided UTXOs into a single output at `destinationAddress` with no
 * change output. The transaction is signed with `privateKeyHex` using ECDSA.
 *
 * @returns Raw transaction hex ready for broadcast
 * @throws {NoWithdrawableAssetsError} If the fee exceeds total UTXO value
 */
export declare function buildSweepTransaction({ accountId, fromAddress, outputScript, utxos, feeRateSatsPerVByte, privateKey, network }: BuildSweepTransactionParams): TransactionHex;
export {};