/**
 * Class for resolve root and asset paths.
 * @class PathUtils
 * @memberof jibo.utils
 */
declare class PathUtils {
    private static findRootCache;
    private static getAssetUriCache;
    /**
     * Traverses up the directories until the first folder with a `package.json` file.
     * This also works for requests with asset-pack, e.g., "core://resources/fonts.css".
     * @method jibo.utils.PathUtils.findRoot
     * @param {String} [start] The starting directory, empty uses current working directory.
     * @return {String} The root directory which contains `package.json`.
     */
    static findRoot(start?: string): string;
    static _findRoot(start: string): string;
    /**
     * Get a project name. Useful for figuring out the asset pack.
     * @method jibo.utils.PathUtils.getProjectName
     * @param {String} dir The directory. Should contain `package.json`.
     * @return {String} The name in the `package.json`.
     */
    static getProjectName(dir: string): string;
    /**
     * Basic check to see if a URI is a URL.
     * @method jibo.utils.PathUtils.isURL
     * @param {String} uri String path to test.
     * @return {Boolean} `true` if URI is a URL.
     */
    static isURL(uri: string): boolean;
    /**
     * Basic check to see if a URI is an image.
     * @method jibo.utils.PathUtils.isImage
     * @param {String} uri String path to test.
     * @return {Boolean} `true` if URI contains an image extension.
     */
    static isImage(uri: string): boolean;
    /**
     * Set the default path for behaviors, rules, animations, etc.
     * @method jibo.utils.PathUtils.setDefaultPath
     * @param {String} parentDir The parent directory.
     * @param {String} fileName The file name.
     * @return {String} asset URI to load.
     */
    static setDefaultPath(parentDir: string, fileName: string): string;
    /**
     * Get the asset pack from the file request, if available.
     * @method jibo.utils.PathUtils.getAssetPack
     * @param {String} fileName The file name.
     * @return {String} The asset pack name, otherwise returns ''.
     */
    static getAssetPack(fileName: string): string;
    /**
     * Get an asset pack URI.
     * @method jibo.utils.PathUtils.getAssetUri
     * @param {String} fileName The file name to load, can be `asset-pack://etc`.
     * @param {String} assetPack The current asset pack to load within.
     * @param {string} [resourceRoot] The root of the skill to get the asset from (defaults to current skill).
     * @return {String} The result URI.
     */
    static getAssetUri(fileName: string, assetPack?: string, resourceRoot?: string): string;
    static _getAssetUri(fileName: string, assetPack?: string, resourceRoot?: string): string;
    /**
     * Get asset source from filename and asset pack.
     * @method jibo.utils.PathUtils.getAudioUri
     * @param {String} fileName The file name to load, can be `asset-pack://etc`.
     * @param {String} currentAssetPack The current asset pack to load within.
     * @param {String} [resourceRoot] The root to the skill.
     * @return {String} The result URI.
     */
    static getAudioUri(fileName: string, currentAssetPack?: string, resourceRoot?: string): string;
    /**
     * Get asset source from filename and asset pack.
     * @method jibo.utils.PathUtils.getTimelineUri
     * @param {String} fileName The file name to load, can be `asset-pack://etc`.
     * @param {String} currentAssetPack The current asset pack to load within.
     * @param {String} [resourceRoot] The root to the skill.
     * @return {String} The result URI.
     */
    static getTimelineUri(fileName: string, currentAssetPack?: string, resourceRoot?: string): string;
    /**
     * Get the URI for an animation referenced from within another animation's reference layer.
     * In the case of asset pack references, we resolve it relative to the asset pack's "animations" directory.
     * Otherwise it's a relative reference, relative to the referencing animation file's directory.
     * @method jibo.utils.PathUtils.getAnimationUri
     * @param fileName
     * @param currentAssetPack
     * @param resourceRoot
     * @returns {string}
     */
    static getAnimationUri(fileName: string, currentAssetPack?: string, resourceRoot?: string): string;
    /**
     * Modified from [https://github.com/sindresorhus/resolve-from](https://github.com/sindresorhus/resolve-from). Return the path to the
     * module's `package.json`, not the module directory.
     * @method jibo.utils.PathUtils.resolve
     * @param {String} moduleId The module to resolve path to.
     * @param {String} [fromPath=process.cwd()] Resolve path from
     * @return {String} The resolved file path.
     */
    static resolve(moduleId: string, fromPath?: string): string;
    /**
     * Return the root path of the asset pack from the asset filename, if available.
     * @method jibo.utils.PathUtils.resolveAssetPack
     * @param {String} assetPack The assetPack name name.
     * @return {String} Full path to the root directory.
     */
    private static resolveAssetPack(assetPack);
    private static getPackagePath();
}
export default PathUtils;