export interface ConfigData {
    projectName?: string;
    apiKey?: string;
    cliToken?: string;
    environment?: "production" | "sandbox";
    language?: "TypeScript" | "JavaScript";
    supabaseUrl?: string;
}
/**
 * Saves the configuration data.
 * Merges with existing data by default.
 * @param {Partial<ConfigData>} data - The configuration data to save.
 */
export declare function saveConfig(data: Partial<ConfigData>): void;
/**
 * Loads the entire configuration object.
 * @returns {ConfigData | null} The configuration data, or null if not found/empty.
 */
export declare function loadConfig(): ConfigData | null;
/**
 * Gets a specific configuration value.
 * @param {keyof ConfigData} key - The configuration key to retrieve.
 * @returns {T | undefined} The value or undefined if not set.
 */
export declare function getConfigValue<K extends keyof ConfigData>(key: K): ConfigData[K] | undefined;
/**
 * Deletes a specific configuration key.
 * @param {keyof ConfigData} key - The key to delete.
 */
export declare function deleteConfigValue(key: keyof ConfigData): void;
/**
 * Clears the entire configuration.
 */
export declare function clearConfig(): void;
/**
 * Gets the path to the configuration file.
 * @returns {string} The absolute path to the config file.
 */
export declare function getConfigFilePath(): string;
/**
 * Checks if the user is logged in (CLI token exists).
 * If not, prints an error message and exits the process.
 */
export declare function ensureLoggedIn(): void;