import { ApiResponse, RequestOptions } from './types.js';
/**
 * Interface for NeverBounce client
 */
interface NeverBounceClient {
    getConfig(): {
        apiKey: string | null;
        apiVersion: string;
        timeout: number;
        opts: RequestOptions;
    };
    getRequestOpts(params: Partial<RequestOptions>): RequestOptions;
}
/**
 * HTTP Client for making API requests using fetch
 */
declare class HttpsClient {
    private _nb;
    private _version;
    /**
     * Constructor
     * @param _nb NeverBounce client instance
     */
    constructor(_nb: NeverBounceClient);
    /**
     * Performs API requests using fetch
     * @param params Request parameters
     * @param data Request data
     * @returns Promise with API response
     */
    request<T extends ApiResponse>(params: Partial<RequestOptions>, data?: Record<string, any>): Promise<T>;
}
export default HttpsClient;