import { FeeRates, TxHistoryParams } from '@xchainjs/xchain-client';
import { Address, Asset, Chain } from '@xchainjs/xchain-util';
import { Provider } from 'ethers';
import { Balance, CompatibleAsset, EvmOnlineDataProvider, Tx, TxsPage } from '../../types';
export declare class EtherscanProvider implements EvmOnlineDataProvider {
    private provider;
    protected apiKey: string;
    protected baseUrl: string;
    protected chain: Chain;
    protected nativeAsset: Asset;
    protected nativeAssetDecimals: number;
    constructor(provider: Provider, baseUrl: string, apiKey: string, chain: Chain, nativeAsset: Asset, nativeAssetDecimals: number);
    getBalance(address: Address, assets?: CompatibleAsset[]): Promise<Balance[]>;
    private getNativeAssetBalance;
    private getTokenBalance;
    private getUniqueContractAddresses;
    getTransactions(params: TxHistoryParams): Promise<TxsPage>;
    getTransactionData(txHash: string, assetAddress?: Address): Promise<Tx>;
    getFeeRates(): Promise<FeeRates>;
}