import EventEmitter from "eventemitter3";
import { type ReqFilter, type SystemInterface, type TaggedNostrEvent } from "..";
interface RangeSyncEvents {
    event: (ev: Array<TaggedNostrEvent>) => void;
    scan: (from: number) => void;
}
/**
 * A simple time based sync for pulling lots of data from nostr
 */
export declare class RangeSync extends EventEmitter<RangeSyncEvents> {
    #private;
    private constructor();
    static forSystem(system: SystemInterface): RangeSync;
    static forFetcher(fn: SystemInterface["Fetch"]): RangeSync;
    /**
     * Set window size in seconds
     */
    setWindowSize(n: number): void;
    /**
     * Set start time for range sync
     * @param n Unix timestamp
     */
    setStartPoint(n: number): void;
    /**
     * Request to sync with a given filter
     */
    sync(filter: ReqFilter): Promise<void>;
}
export {};
//# sourceMappingURL=range-sync.d.ts.map