import { HttpClient } from "../utils/httpClient.js";
/**
 * MinistryPlatformClient - Core HTTP client with automatic authentication management
 *
 * Manages OAuth2 client credentials authentication and provides a configured HttpClient
 * instance for all Ministry Platform API operations. Handles token lifecycle including
 * automatic refresh before expiration.
 */
export declare class MinistryPlatformClient {
    private token;
    private expiresAt;
    private baseUrl;
    private httpClient;
    /**
     * Creates a new MinistryPlatformClient instance
     * Initializes the HTTP client and sets up token management
     */
    constructor();
    /**
     * Ensures the authentication token is valid and refreshes if necessary
     * This method should be called before making any API requests to guarantee authentication
     * @throws Error if token refresh fails
     */
    ensureValidToken(): Promise<void>;
    /**
     * Returns the configured HTTP client instance for making authenticated requests
     * @returns HttpClient instance with automatic token injection
     */
    getHttpClient(): HttpClient;
}