import { type EventBus } from "../runtime/event-bus.js";
import type { Extension, ExtensionFactory, ExtensionRuntime, LoadExtensionsResult } from "./types.js";
export declare function __getExtensionAliasesForTest(): Record<string, string>;
export declare function __getExtensionVirtualModulesForTest(): Promise<Record<string, unknown>>;
/**
 * Create a runtime with throwing stubs for action methods.
 * Runner.bindCore() replaces these with real implementations.
 */
export declare function createExtensionRuntime(): ExtensionRuntime;
/**
 * Create an Extension from an inline factory function.
 */
export declare function loadExtensionFromFactory(factory: ExtensionFactory, cwd: string, agentDir: string, eventBus: EventBus, runtime: ExtensionRuntime, extensionPath?: string): Promise<Extension>;
/**
 * Load extensions from paths.
 */
export declare function loadExtensions(paths: string[], cwd: string, agentDir: string, eventBus?: EventBus): Promise<LoadExtensionsResult>;
/**
 * Discover and load extensions from standard locations.
 */
export declare function discoverAndLoadExtensions(configuredPaths: string[], cwd: string, agentDir?: string, eventBus?: EventBus): Promise<LoadExtensionsResult>;