import { Transport, Config } from '../core/types';
import { Logger } from '../utils/logger';
export declare class FetchTransport implements Transport {
    private trackingHost;
    private logger;
    private config;
    constructor(trackingHost: string, config: Config, logger?: Logger);
    send(payloads: any[]): Promise<void>;
    private constructUrl;
    private getCustomHeaders;
    private postHandle;
}