declare module 'canonical-path' {
    /**
     * A parsed path object generated by path.parse() or consumed by path.format().
     */
    interface ParsedPath {
      /**
       * The root of the path such as '/' or 'c:\'
       */
      root: string;
      /**
       * The full directory path such as '/home/user/dir' or 'c:\path\dir'
       */
      dir: string;
      /**
       * The file name including extension (if any) such as 'index.html'
       */
      base: string;
      /**
       * The file extension (if any) such as '.html'
       */
      ext: string;
      /**
       * The file name without extension (if any) such as 'index'
       */
      name: string;
  }
  interface FormatInputPathObject {
      /**
       * The root of the path such as '/' or 'c:\'
       */
      root?: string;
      /**
       * The full directory path such as '/home/user/dir' or 'c:\path\dir'
       */
      dir?: string;
      /**
       * The file name including extension (if any) such as 'index.html'
       */
      base?: string;
      /**
       * The file extension (if any) such as '.html'
       */
      ext?: string;
      /**
       * The file name without extension (if any) such as 'index'
       */
      name?: string;
  }

  /**
   * Normalize a string path, reducing '..' and '.' parts.
   * When multiple slashes are found, they're replaced by a single one; when the path contains a trailing slash, it is preserved. On Windows backslashes are used.
   *
   * @param p string path to normalize.
   */
  function normalize(p: string): string;
  /**
   * Join all arguments together and normalize the resulting path.
   * Arguments must be strings. In v0.8, non-string arguments were silently ignored. In v0.10 and up, an exception is thrown.
   *
   * @param paths paths to join.
   */
  function join(...paths: string[]): string;
  /**
   * The right-most parameter is considered {to}.  Other parameters are considered an array of {from}.
   *
   * Starting from leftmost {from} paramter, resolves {to} to an absolute path.
   *
   * If {to} isn't already absolute, {from} arguments are prepended in right to left order,
   * until an absolute path is found. If after using all {from} paths still no absolute path is found,
   * the current working directory is used as well. The resulting path is normalized,
   * and trailing slashes are removed unless the path gets resolved to the root directory.
   *
   * @param pathSegments string paths to join.  Non-string arguments are ignored.
   */
  function resolve(...pathSegments: string[]): string;
  /**
   * Determines whether {path} is an absolute path. An absolute path will always resolve to the same location, regardless of the working directory.
   *
   * @param path path to test.
   */
  function isAbsolute(path: string): boolean;
  /**
   * Solve the relative path from {from} to {to}.
   * At times we have two absolute paths, and we need to derive the relative path from one to the other. This is actually the reverse transform of path.resolve.
   */
  function relative(from: string, to: string): string;
  /**
   * Return the directory name of a path. Similar to the Unix dirname command.
   *
   * @param p the path to evaluate.
   */
  function dirname(p: string): string;
  /**
   * Return the last portion of a path. Similar to the Unix basename command.
   * Often used to extract the file name from a fully qualified path.
   *
   * @param p the path to evaluate.
   * @param ext optionally, an extension to remove from the result.
   */
  function basename(p: string, ext?: string): string;
  /**
   * Return the extension of the path, from the last '.' to end of string in the last portion of the path.
   * If there is no '.' in the last portion of the path or the first character of it is '.', then it returns an empty string
   *
   * @param p the path to evaluate.
   */
  function extname(p: string): string;
  /**
   * The platform-specific file separator. '\\' or '/'.
   */
  const sep: '\\' | '/';
  /**
   * The platform-specific file delimiter. ';' or ':'.
   */
  const delimiter: ';' | ':';
  /**
   * Returns an object from a path string - the opposite of format().
   *
   * @param pathString path to evaluate.
   */
  function parse(pathString: string): ParsedPath;
  /**
   * Returns a path string from an object - the opposite of parse().
   *
   * @param pathString path to evaluate.
   */
  function format(pathObject: FormatInputPathObject): string;

  /**
   * Returns the canonical form of a path.
   * @param p the path to make canonical.
   */
  function canonical(p: string): string;
}