/*!
 * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
import type { Rule } from 'eslint';
/**
 * Check if a given path exists and is a directory
 *
 * @param filePath The path
 */
export declare function isDirectory(filePath: string): boolean;
/**
 * Check if a given path exists and is a directory
 *
 * @param filePath The path
 */
export declare function isFile(filePath: string): boolean;
/**
 * Find the path of nearest `appinfo/info.xml` relative to given path
 *
 * @param currentPath Path to lookup
 * @return Either the full path including the `info.xml` part or `undefined` if no found
 */
export declare function findAppinfo(currentPath: string): string | undefined;
/**
 * Make sure that versions like '25' can be handled by semver
 *
 * @param version The pure version string
 * @return Sanitized version string
 */
export declare function sanitizeTargetVersion(version: string): string;
/**
 * Create a callback that takes a version number an checks if the version
 * is valid compared to configured version / detected version.
 *
 * @param options Options
 * @param options.cwd The current working directory
 * @param options.physicalFilename The real filename where ESLint is linting currently
 * @param options.options The plugin options
 */
export declare function createVersionValidator({ cwd, physicalFilename, options }: Rule.RuleContext): ((version: string) => boolean);