import { BaseTransport, Payload, Response, Transport } from '@amplitude/analytics-core';
/**
 * Node's HTTP client applies no timeout of its own, so without this a stalled or
 * slow-trickling upload hangs forever. Matches the 10s network timeout used by
 * the Amplitude Java and Python SDKs.
 */
export declare const DEFAULT_REQUEST_TIMEOUT_MILLIS = 10000;
export declare class Http extends BaseTransport implements Transport {
    private readonly requestTimeoutMillis;
    constructor(requestTimeoutMillis?: number);
    send(serverUrl: string, payload: Payload): Promise<Response | null>;
}
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