/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import type { UpdateObject } from '../ui/utils/updateCheck.js';
import type { LoadedSettings } from '../config/settings.js';
import type { HistoryItem } from '../ui/types.js';
import type { spawn } from 'node:child_process';
/** @internal */
export declare function _setUpdateStateForTesting(value: boolean): void;
export declare function isUpdateInProgress(): boolean;
/**
 * Returns a promise that resolves when the update process completes or times out.
 */
export declare function waitForUpdateCompletion(timeoutMs?: number): Promise<void>;
export declare function handleAutoUpdate(info: UpdateObject | null, settings: LoadedSettings, projectRoot: string, spawnFn?: typeof spawn): import("child_process").ChildProcess | undefined;
export declare function setUpdateHandler(addItem: (item: Omit<HistoryItem, 'id'>, timestamp: number) => void, setUpdateInfo: (info: UpdateObject | null) => void): () => void;