Function normalize

path/posix/normalize.ts:44–63

(path: string | URL)

 * @returns The normalized path.
 */
export function normalize(path: string | URL): string {
  if (path instanceof URL) {
    path = fromFileUrl(path);
  }
  assertArg(path);

  const isAbsolute = isPosixPathSeparator(path.charCodeAt(0));
  const trailingSeparator = isPosixPathSeparator(
    path.charCodeAt(path.length - 1),
  );

  // Normalize the path
  path = normalizeString(path, !isAbsolute, "/", isPosixPathSeparator);

  if (path.length === 0 && !isAbsolute) path = ".";
  if (path.length > 0 && trailingSeparator) path += "/";

  if (isAbsolute) return `/${path}`;
  return path;
}