import { TrackerEvent, TrackerTransportInterface, TrackerInterface, NonEmptyArray, TransportableEvent } from '@objectiv/tracker-core';

/**
 * The default XMLHttpRequest function implementation.
 */
declare const defaultXHRFunction: ({ endpoint, events, }: {
    endpoint: string;
    events: [TrackerEvent, ...TrackerEvent[]];
}) => Promise<unknown>;

/**
 * The configuration of the XHRTransport class
 */
declare type XHRTransportConfig = {
    /**
     * Optional. Override the default XMLHttpRequestFunction implementation with a custom one.
     */
    xmlHttpRequestFunction?: typeof defaultXHRFunction;
};
/**
 * A TrackerTransport based on XMLHttpRequest. Sends event to the specified Collector endpoint.
 * Optionally supports specifying a custom `xmlHttpRequestFunction`.
 */
declare class XHRTransport implements TrackerTransportInterface {
    readonly transportName = "XHRTransport";
    xmlHttpRequestFunction: typeof defaultXHRFunction;
    endpoint?: string;
    initialize(tracker: TrackerInterface): void;
    handle(...args: NonEmptyArray<TransportableEvent>): Promise<any>;
    isUsable(): boolean;
}

export { XHRTransport, XHRTransportConfig, defaultXHRFunction };