import { ILogger } from "@node-lightning/logger";
import { ChannelAnnouncementMessage } from "../messages/ChannelAnnouncementMessage";
import { ChannelUpdateMessage } from "../messages/ChannelUpdateMessage";
import { NodeAnnouncementMessage } from "../messages/NodeAnnouncementMessage";
export declare enum GossipSyncWatcherState {
    Idle = 0,
    Watching = 1,
    Complete = 2,
    Canceled = 3
}
/**
 * GossipSyncWatcher monitors the progress of a GossipSync operation for the
 * completion of the synchronization and signals once the sync has completed
 * or timed out.
 */
export declare class GossipSyncWatcher {
    readonly logger: ILogger;
    completeAfterMs: number;
    private _state;
    private _timeoutHandle;
    private _messageCounter;
    private _resolve;
    private _reject;
    constructor(logger: ILogger);
    /**
     * Gets the state of the Watcher: IDLE, WATCHING, COMPLETE, FAILED
     */
    get state(): GossipSyncWatcherState;
    /**
     * Gets the number of messages that have been seen while watching
     */
    get messageCounter(): number;
    /**
     * Watches gossip traffic until a completion event occurs or watching is
     * cancelled.
     */
    watch(): Promise<void>;
    /**
     * Process a message and debounce when it is a gossip message
     * @param msg
     */
    onGossipMessage(msg: ChannelAnnouncementMessage | ChannelUpdateMessage | NodeAnnouncementMessage): void;
    /**
     * Cancels watching and sends a failure signal.
     */
    cancel(): void;
    private _clearTimeout;
    private _setTimeout;
    private _onTimeout;
}