import { DocHandle } from "../DocHandle.js";
import { Repo } from "../Repo.js";
import { DocMessage } from "../network/messages.js";
import { AutomergeUrl, DocumentId, PeerId } from "../types.js";
import { DocSynchronizer } from "./DocSynchronizer.js";
import { Synchronizer } from "./Synchronizer.js";
/** A CollectionSynchronizer is responsible for synchronizing a DocCollection with peers. */
export declare class CollectionSynchronizer extends Synchronizer {
    #private;
    private repo;
    /** A map of documentIds to their synchronizers */
    /** @hidden */
    docSynchronizers: Record<DocumentId, DocSynchronizer>;
    constructor(repo: Repo, denylist?: AutomergeUrl[]);
    getDocumentSyncState(docHandle: DocHandle<unknown>, peerId: PeerId): import("@automerge/automerge").SyncState | Promise<import("@automerge/automerge").SyncState>;
    /**
     * When we receive a sync message for a document we haven't got in memory, we
     * register it with the repo and start synchronizing
     */
    receiveMessage(message: DocMessage): Promise<void>;
    /**
     * Starts synchronizing the given document with all peers that we share it generously with.
     */
    addDocument(handle: DocHandle<unknown>): void;
    removeDocument(documentId: DocumentId): void;
    /** Adds a peer and maybe starts synchronizing with them */
    addPeer(peerId: PeerId): void;
    /** Removes a peer and stops synchronizing with them */
    removePeer(peerId: PeerId, documentId?: DocumentId): void;
    /** Returns a list of all connected peer ids */
    get peers(): PeerId[];
    metrics(): {
        [key: string]: {
            peers: PeerId[];
            size: {
                numOps: number;
                numChanges: number;
            };
        };
    };
}
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