import type { Hash } from '@ariestools/sdk';
import type { ChainStateViewer, SignedHydratedBlockWithHashMeta, XL1BlockNumber } from '@xyo-network/xl1-protocol/protocol-lib';
import type { CreatableProviderParams } from '@xyo-network/xl1-sdk/protocol-sdk';
import { AbstractS3Provider } from './AbstractS3Provider.ts';
/**
 * A ChainStateViewer over the chain-state bucket, reading the published head pointer back
 * through the S3 API (authenticated, not the public HTTP layout — see RestChainStateViewer
 * for anonymous reads). This is how publishers learn their resume cursor: the head pointer
 * is only written after the finalized files it references exist.
 */
export declare class S3ChainStateViewer extends AbstractS3Provider<CreatableProviderParams, ChainStateViewer['eventData']> implements ChainStateViewer {
    /** Connection kinds supported by this provider. */
    static readonly connectionTypes: readonly ["s3"];
    /** Primary moniker used to resolve this provider. */
    static readonly defaultMoniker: "ChainStateViewer";
    /** Provider monikers that must resolve before this provider can be created. */
    static readonly dependencies: never[];
    /** Provider monikers implemented by this provider class. */
    static readonly monikers: "ChainStateViewer"[];
    /** Moniker implemented by this provider instance. */
    moniker: "ChainStateViewer";
    /** The published head; throws when no head pointer has been published yet. */
    currentBlock(): Promise<SignedHydratedBlockWithHashMeta>;
    /** Returns the hash from the published chain head. */
    currentBlockHash(): Promise<Hash>;
    /** Returns the block number from the published chain head. */
    currentBlockNumber(): Promise<XL1BlockNumber>;
    /** The published head, or undefined when no head pointer has been published yet. */
    tryCurrentBlock(): Promise<SignedHydratedBlockWithHashMeta | undefined>;
}
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