import type { AppWizard } from '@sap-devx/yeoman-ui-types';
import type { ToolsLogger } from '@sap-ux/logger';
import type { ConfigPrompter } from '../app/questions/configuration.js';
/**
 * Values that are stashed in the App-Wizard cache.
 */
interface State {
    /** Re-use the heavy-weight ConfigPrompter when the user navigates back-and-forth. */
    prompter?: ConfigPrompter;
}
declare const ADP_CACHE_KEY = "$adp-generator-cache";
/**
 * Augmented AppWizard type with optional internal cache field used for state persistence.
 */
export type AppWizardWithCache = AppWizard & {
    [ADP_CACHE_KEY]?: Partial<State>;
};
/**
 * Initializes the internal cache store on the AppWizard instance if it doesn't exist.
 * This should be called early in the generator lifecycle (typically in the constructor).
 *
 * @param {ILogWrapper} logger - Logger instance used for debugging messages.
 * @param {AppWizardWithCache} [wizard] - The AppWizard instance to augment with cache storage.
 * @returns {void}
 */
export declare function initCache(logger: ToolsLogger, wizard?: AppWizardWithCache): void;
/**
 * Stores or merges partial generator state in the AppWizard’s cache.
 *
 * @param {AppWizardWithCache | undefined} wizard - The AppWizard instance (may be undefined).
 * @param {Partial<State>} state - Partial state object to cache.
 * @param {ILogWrapper} logger - Logger instance for diagnostics.
 * @returns {void}
 */
export declare function cachePut(wizard: AppWizardWithCache | undefined, state: Partial<State>, logger: ToolsLogger): void;
/**
 * Retrieves a cached value from the AppWizard instance by key.
 *
 * @template T
 * @param {AppWizardWithCache | undefined} wizard - The AppWizard instance with cache.
 * @param {keyof State} key - The key to retrieve from the cached state.
 * @param {ILogWrapper} logger - Logger instance used for diagnostics.
 * @returns {T | undefined} - The cached value if present, otherwise `undefined`.
 */
export declare function cacheGet<T>(wizard: AppWizardWithCache | undefined, key: keyof State, logger: ToolsLogger): T | undefined;
/**
 * Clears the entire generator state cache from the AppWizard instance.
 *
 * @param {AppWizardWithCache | undefined} wizard - The AppWizard instance with cache to clear.
 * @param {ILogWrapper} logger - Logger instance for diagnostics.
 * @returns {void}
 */
export declare function cacheClear(wizard: AppWizardWithCache | undefined, logger: ToolsLogger): void;
export {};
//# sourceMappingURL=appWizardCache.d.ts.map