import { ApiPromise } from '@polkadot/api/promise';
import { AddressOrPair } from '@polkadot/api/types';
import { ApiTransactionHandler, SignTxFunction } from './api-transaction-handler';
/**
 * Base functionality for derived clients.
 */
export declare class PolkadotClient {
    protected api: ApiPromise;
    protected transactionsHandler: ApiTransactionHandler;
    constructor(api: ApiPromise, signFn?: SignTxFunction | AddressOrPair);
}
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