import type { DiscoveredDownloadTransportControl, PrefixUploadTransportControl } from './control-v2.mts';
import { type MintPrefixUploadOptions } from './prefix.mts';
export declare const MAX_DISCOVERED_TRANSPORT_OBJECTS = 1024;
export interface ObjectGetSigner {
    signGet(key: string, ttlSeconds: number): Promise<string>;
}
export interface ListedTransportObject {
    readonly key: string;
    readonly byteLength: number;
}
export interface TransportObjectLister {
    list(prefix: string, continuationToken?: string): Promise<{
        readonly objects: readonly ListedTransportObject[];
        readonly continuationToken?: string;
    }>;
}
export declare function discoverDownloadControl(source: PrefixUploadTransportControl, lister: TransportObjectLister, signer: ObjectGetSigner, options?: MintPrefixUploadOptions): Promise<DiscoveredDownloadTransportControl>;