import ApolloClient from "apollo-client";
import { NormalizedCacheObject } from "apollo-cache-inmemory";
import { OfflineItem } from "./OperationQueueEntry";
import * as debug from "debug";
import { DataSyncConfig } from "../config";
import { Operation } from "apollo-link";
export declare const logger: debug.Debugger;
/**
 * Class used to send offline changes again after error is sent to user or after application restart.
 * It will trigger saved offline mutations using client to restore all elements in the link.
 */
export declare class OfflineMutationsHandler {
    private apolloClient;
    private store;
    private mutationCacheUpdates?;
    constructor(apolloClient: ApolloClient<NormalizedCacheObject>, clientConfig: DataSyncConfig);
    /**
     * Replay mutations to client.
     * This operation will help to rebuild Apollo Link observer chain
     * after page refresh/app restart
     */
    replayOfflineMutations: () => Promise<void>;
    /**
     * Perform mutation using client replicating parameters that user provided into
     *
     * @param item
     */
    mutateOfflineElement(item: OfflineItem): Promise<void>;
    /**
     * Add info to operation that was done when offline
     */
    getOfflineContext(): {
        isOffline: boolean;
    };
    /**
     * Checks if operation was scheduled to saved to offline queue.
     * This operations have special handling.
     * They are never forwarded when sent back again to client.
     */
    static isMarkedOffline(operation: Operation): boolean;
}