Function norm

src/valdi_modules/src/valdi/file_system/web/FileSystem.ts:26–36

(p: string)

const ROOT = "/";
function norm(p: string): string {
  // POSIX-like normalization; treat relative as from ROOT
  const parts = (p.startsWith("/") ? p : ROOT + p).split("/").filter(Boolean);
  const stack: string[] = [];
  for (const part of parts) {
    if (part === ".") continue;
    if (part === "..") { stack.pop(); continue; }
    stack.push(part);
  }
  return ROOT + stack.join("/");
}
function parentDir(p: string): string {
  if (p === ROOT) return ROOT;
  const idx = p.lastIndexOf("/");