import { ProviderConfig } from "./OAuthProvider";
/**
 * Base class for OAuth providers with shared utilities
 *
 * Provides common functionality:
 * - Query string building
 * - HTTP request execution
 * - Configuration storage
 */
export declare abstract class OAuthProviderBase {
    protected config: ProviderConfig;
    constructor(config: ProviderConfig);
    /**
     * Build URL query string from parameters
     *
     * @param params - Key-value pairs to encode
     * @returns Encoded query string (without leading '?')
     */
    protected buildQueryString(params: Record<string, string | string[]>): string;
    /**
     * Make HTTPS request to external API
     *
     * @param url - Full URL to request
     * @param options - Request options (method, headers, body)
     * @returns Parsed JSON response
     */
    protected makeHttpRequest(url: string, options: {
        method: "GET" | "POST";
        headers?: Record<string, string>;
        body?: string;
    }): Promise<any>;
}