import { ApiPromise } from '@polkadot/api/promise';
import { AddressOrPair, SubmittableExtrinsic } from '@polkadot/api/types';
import { Address } from '@polkadot/types/interfaces';
import { Event, EventRecord } from '@polkadot/types/interfaces/system';
import { ISubmittableResult } from '@polkadot/types/types';
import { MaybePromise } from '@dxos/util';
declare type Tx = SubmittableExtrinsic<'promise', ISubmittableResult>;
export declare type SignTxFunction = (tx: Tx) => MaybePromise<Tx>;
interface SendTransactionResult {
    events: EventRecord[];
    signer: Address;
}
/**
 * TODO(burdon): Comment.
 */
export declare class ApiTransactionHandler {
    private api;
    private signFn;
    constructor(api: ApiPromise, _signFn?: SignTxFunction | AddressOrPair);
    sendTransaction(transaction: SubmittableExtrinsic<'promise'>, signFn?: SignTxFunction): Promise<SendTransactionResult>;
    sendSudoTransaction(transaction: Tx, sudoSignFn: SignTxFunction | AddressOrPair): Promise<SendTransactionResult>;
    getErrorName(rejectionEvent: Event): string;
    ensureExtrinsicNotFailed(events: EventRecord[]): void;
}
export {};
//# sourceMappingURL=api-transaction-handler.d.ts.map