getPath.ts

const paths = new Map<string, string>();

const getPath = (driveItem: ItemWrapper): string => {
  const rec = (driveItem: ItemWrapper): { path: string; valid: boolean } => {
    if (paths.has(driveItem.id)) {
      return { path: paths.get(driveItem.id), valid: true };
    }
    if (driveItem.id == rootFolderId) {
      return { path: '', valid: true };
    }

    const parents = driveItem.content.getParents();
    while (parents.hasNext()) {
      const parent = parents.next();
      const id = parent.getId();
      const parentWrapper = getDriveItem(id, true, parent);
      const res = rec(parentWrapper);
      if (res.valid) {
        const path =
          res.path + '/' + (driveItem.name || (driveItem.name = driveItem.content.getName()));
        paths.set(driveItem.id, path);
        return { path, valid: true };
      } else {
        return { path: '', valid: false };
      }
    }
    return { path: '', valid: false };
  };
  return rec(driveItem).path || driveItem.name || (driveItem.name = driveItem.content.getName());
};