import { CID } from 'multiformats/cid';
import { CeramicApi, AnchorServiceResponse, AnchorService, DiagnosticsLogger } from '@dustil/common';
import { StreamID } from '@dustil/streamid';
import { Observable } from 'rxjs';
export declare class EthereumAnchorService implements AnchorService {
    readonly anchorServiceUrl: string;
    private readonly requestsApiEndpoint;
    private readonly chainIdApiEndpoint;
    private _chainId;
    private readonly providersCache;
    private readonly _logger;
    private readonly pollInterval;
    constructor(anchorServiceUrl: string, logger: DiagnosticsLogger, pollInterval?: number);
    set ceramic(ceramic: CeramicApi);
    get url(): string;
    init(): Promise<void>;
    requestAnchor(streamId: StreamID, tip: CID): Observable<AnchorServiceResponse>;
    getSupportedChains(): Promise<Array<string>>;
    private _announcePending;
    private _makeRequest;
    pollForAnchorResponse(streamId: StreamID, tip: CID): Observable<AnchorServiceResponse>;
    private parseResponse;
}
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