/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { type PackageJson as BasePackageJson } from 'read-package-up';
export type PackageJson = BasePackageJson & {
    config?: {
        sandboxImageUri?: string;
    };
};
/**
 * Reads package.json from the current directory or any parent directory.
 *
 * @param cwd - The directory to start searching from (searches upward to filesystem root)
 * @returns The package.json object if found, or `undefined` if no package.json exists
 *          in the directory hierarchy. This is expected behavior when called from
 *          directories outside of a Node.js project.
 *
 * @example
 * ```ts
 * const pkg = await getPackageJson(__dirname);
 * const version = pkg?.version ?? 'unknown';
 * ```
 */
export declare function getPackageJson(cwd: string): Promise<PackageJson | undefined>;