/**
 * Main configuration function for Storyblok CLI.
 *
 * This function:
 * 1. Loads existing configuration from file and environment variables
 * 2. If configuration exists:
 *    - Verifies existing values with user
 *    - Updates if needed
 * 3. If no configuration exists:
 *    - Prompts for all required values
 * 4. Saves the final configuration to .storyblokrc.json
 *
 * The configuration process follows this flow:
 * - First checks for existing config in .storyblokrc.json
 * - Then checks for environment variables
 * - If found, verifies with user
 * - If not found or user wants to update, prompts for new values
 *
 * @throws {Error} If configuration saving fails
 */
export declare function configureStoryblok(): Promise<void>;