/**
 * Network Manager for handling HTTP requests with retry logic and error handling
 */
import { ConversionIQConfig, NetworkRequest, NetworkResponse } from '../types/index';
import { ErrorHandler } from './ErrorHandler';
export declare class NetworkManager {
    private config;
    private errorHandler;
    constructor(config: ConversionIQConfig, errorHandler: ErrorHandler);
    /**
     * Send a network request with retry logic
     */
    request<T = any>(request: NetworkRequest): Promise<NetworkResponse<T>>;
    /**
     * Send events in batch
     */
    sendBatch(events: any[]): Promise<void>;
    /**
     * Send a single event
     */
    sendEvent(event: any): Promise<void>;
    /**
     * Check if the SDK can connect to the API
     */
    ping(): Promise<boolean>;
    /**
     * Make the actual HTTP request
     */
    private makeRequest;
    /**
     * Parse response body
     */
    private parseResponse;
    /**
     * Parse response headers
     */
    private parseHeaders;
    /**
     * Sleep for specified milliseconds
     */
    private sleep;
    /**
     * Check if the current network connection supports sending data
     */
    canSendData(): boolean;
    /**
     * Use sendBeacon for critical events when page is unloading
     */
    sendBeacon(event: any): boolean;
    /**
     * Send event using image beacon (CORS-free method)
     * This works across all domains without CORS restrictions
     */
    sendImageBeacon(event: any): Promise<boolean>;
    /**
     * Send event with automatic fallback strategy
     * 1. Try XHR/fetch (best for rich data)
     * 2. Fall back to sendBeacon (reliable, no CORS)
     * 3. Fall back to image beacon (works everywhere)
     */
    sendWithFallback(event: any): Promise<boolean>;
    /**
     * Compress event data for URL transmission (used by image beacon)
     * Removes large fields and keeps only essential data
     */
    private compressEventForBeacon;
    /**
     * Compress metadata to fit in URL
     */
    private compressMetadata;
    /**
     * Make request with CORS credentials if configured
     */
    requestWithCredentials<T>(request: NetworkRequest): Promise<NetworkResponse<T>>;
}
//# sourceMappingURL=NetworkManager.d.ts.map