import type { ConfigChangeCallback, TImportedModule, TLazyOptions } from "../types.js";
/**
 * Global configuration options for the lazy loading system.
 * Default values:
 * - gcThreshold: 300000 (5 minutes)
 * - gcInterval: 60000 (1 minute)
 */
export declare const lazyOptions: TLazyOptions;
/**
 * Global cache for storing imported modules and their metadata.
 * The key is the module name and the value contains:
 * - module: The actual module function/class
 * - lastUsed: Counter for tracking module usage
 * - collect: Whether the module can be garbage collected
 */
export declare const moduleCache: Map<string, TImportedModule>;
/**
 * Registers a callback to be called when lazy loading configuration changes.
 *
 * @param {ConfigChangeCallback} callback - Function to be called with new options
 */
export declare function addConfigChangeListener(callback: ConfigChangeCallback): void;
/**
 * Removes a previously registered configuration change callback.
 *
 * @param {ConfigChangeCallback} callback - The callback to remove
 */
export declare function removeConfigChangeListener(callback: ConfigChangeCallback): void;
/**
 * Updates the lazy loading configuration options.
 * Undefined values are removed from the update to preserve existing values.
 * Triggers all registered configuration change listeners.
 *
 * @param {Partial<TLazyOptions>} options - Partial configuration object
 */
export declare function setLazyOptions(options: Partial<TLazyOptions>): void;