Function topmostUntrackedDir

packages/computer/src/git/worktree.ts:308–318

(path: string, trackedDirs: Set<string>)

}

function topmostUntrackedDir(path: string, trackedDirs: Set<string>): string {
  // Walk from the file up to the root; the first dir off the root
  // that isn't tracked is the top of the untracked subtree.
  const segments = path.split("/");
  let prefix = "";
  for (let i = 0; i < segments.length - 1; i++) {
    prefix = prefix === "" ? segments[i] : `${prefix}/${segments[i]}`;
    if (!trackedDirs.has(prefix)) return prefix;
  }
  return dirname(path);
}

function dirname(path: string): string {
  const i = path.lastIndexOf("/");