import type { PolyNode } from '../client.js';
import type { StorageBackend } from './storage.js';
import type { BackfillProgress, EntityType } from './types.js';
export declare class BackfillOrchestrator {
    private readonly client;
    private readonly storage;
    private readonly ratePerSecond;
    private readonly maxPages;
    private readonly pageSize;
    private readonly onProgress?;
    private running;
    private timer;
    private _wakeResolve;
    private _loopDone;
    private _loopDoneResolve;
    constructor(client: PolyNode, storage: StorageBackend, opts: {
        ratePerSecond: number;
        maxPages?: number;
        pageSize?: number;
        onProgress?: (p: BackfillProgress) => void;
    });
    start(): void;
    stop(): Promise<void>;
    queueEntity(entityType: EntityType, entityId: string, label: string): void;
    private _loop;
    private _backfillEntity;
    private _fetchPage;
    private _emitProgress;
    private _sleep;
    /** Sleep that can be interrupted by _wake() — used for idle polling. */
    private _idleSleep;
    private _wake;
}
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