import { FeeRates, TxHash, TxHistoryParams } from '@xchainjs/xchain-client';
import { Address, Asset, Chain } from '@xchainjs/xchain-util';
import { Balance, Tx, TxsPage, UTXO, UtxoOnlineDataProvider } from '../../types';
export declare class NownodesProvider implements UtxoOnlineDataProvider {
    private baseUrl;
    private _apiKey;
    private asset;
    private assetDecimals;
    constructor(baseUrl: string | undefined, chain: Chain, asset: Asset, assetDecimals: number, apiKey: string);
    get apiKey(): string;
    set apiKey(value: string);
    broadcastTx(txHex: string): Promise<TxHash>;
    getConfirmedUnspentTxs(address: string): Promise<UTXO[]>;
    getUnspentTxs(address: string): Promise<UTXO[]>;
    getBalance(address: Address, confirmedOnly?: boolean): Promise<Balance[]>;
    getTransactions(params?: TxHistoryParams): Promise<TxsPage>;
    getTransactionData(txId: string): Promise<Tx>;
    getFeeRates(): Promise<FeeRates>;
    /**
     * Get the consensus branch ID for the next block from the backend status.
     * Used to sign Zcash transactions against the active network upgrade.
     * @returns {number | undefined} The consensus branch ID, or undefined if unavailable.
     */
    getConsensusBranchId(): Promise<number | undefined>;
    private mapTransactionToTx;
    private mapUTXOs;
    private getRawTransactions;
}