import { Extension as ExtensionInterface } from '../index.js';
/**
 * Registry for plugin extensions
 */
export declare class ExtensionRegistry {
    private extensions;
    private extensionOwners;
    /**
     * Register an extension for a specific extension point
     * @param pluginId ID of the plugin registering the extension
     * @param extension Extension to register
     */
    registerExtension<T>(pluginId: string, extension: ExtensionInterface<T>): void;
    /**
     * Get extensions for a specific extension point
     * @param extensionPointId ID of the extension point
     * @returns Array of extensions sorted by priority (highest first)
     */
    getExtensions<T>(extensionPointId: string): ExtensionInterface<T>[];
    /**
     * Check if an extension point has any registered extensions
     * @param extensionPointId ID of the extension point
     * @returns True if there are extensions registered for this point
     */
    hasExtensions(extensionPointId: string): boolean;
    /**
     * Remove all extensions from a specific plugin
     * @param pluginId ID of the plugin
     */
    removeExtensionsFromPlugin(pluginId: string): void;
    /**
     * Get all registered extension points
     * @returns Array of extension point IDs
     */
    getExtensionPoints(): string[];
    /**
     * Execute a function on all extensions for a specific extension point
     * @param extensionPointId ID of the extension point
     * @param fn Function to execute on each extension
     */
    executeExtensions<T, R>(extensionPointId: string, fn: (extension: ExtensionInterface<T>) => Promise<R>): Promise<R[]>;
}
/**
 * Create an extension registry
 */
export declare function createExtensionRegistry(): ExtensionRegistry;