/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { EventEmitter } from 'node:events';
import type { GeminiCLIExtension } from '../config/config.js';
export interface ExtensionLoader {
    getExtensions(): GeminiCLIExtension[];
    extensionEvents(): EventEmitter<ExtensionEvents>;
}
export interface ExtensionEvents {
    extensionEnabled: ExtensionEnableEvent[];
    extensionDisabled: ExtensionDisableEvent[];
    extensionLoaded: ExtensionLoadEvent[];
    extensionUnloaded: ExtensionUnloadEvent[];
    extensionInstalled: ExtensionInstallEvent[];
    extensionUninstalled: ExtensionUninstallEvent[];
    extensionUpdated: ExtensionUpdateEvent[];
}
interface BaseExtensionEvent {
    extension: GeminiCLIExtension;
}
export type ExtensionDisableEvent = BaseExtensionEvent;
export type ExtensionEnableEvent = BaseExtensionEvent;
export type ExtensionInstallEvent = BaseExtensionEvent;
export type ExtensionLoadEvent = BaseExtensionEvent;
export type ExtensionUnloadEvent = BaseExtensionEvent;
export type ExtensionUninstallEvent = BaseExtensionEvent;
export type ExtensionUpdateEvent = BaseExtensionEvent;
export declare class SimpleExtensionLoader implements ExtensionLoader {
    private readonly extensions;
    private _eventEmitter;
    constructor(extensions: GeminiCLIExtension[]);
    extensionEvents(): EventEmitter<ExtensionEvents>;
    getExtensions(): GeminiCLIExtension[];
}
export {};