import { Transport } from '../core/types';
import { Logger } from '../utils/logger';
export declare class RetryQueue {
    private transport;
    private maxRetries;
    private retryInterval;
    private batchSize;
    private batchInterval;
    private logger;
    private queue;
    private processing;
    private batchTimeoutId;
    private persistence;
    private isOnline;
    private maxQueueItems;
    private maxQueueBytes;
    private totalQueueBytes;
    constructor(transport: Transport, maxRetries?: number, retryInterval?: number, batchSize?: number, batchInterval?: number, logger?: Logger, namespace?: string, maxQueueItems?: number, maxQueueBytes?: number);
    add(payload: any, options?: QueueAddOptions): void;
    private initNetworkListeners;
    private scheduleBatch;
    private processBatch;
    private handleBatchFailure;
    private enforceQueueLimits;
    private estimateItemBytes;
    private loadQueueFromStorage;
    private saveQueueToStorage;
}
export interface QueueAddOptions {
    flushImmediately?: boolean;
}