:sig
DValue file_stat(String path)

:params
path : path to inspect, resolved against the unit's directory
return value : a map with exists, is_file, is_dir, is_symlink, size, mode, mtime, ctime

:content
Returns metadata about a path as a `DValue` map. Read fields with the usual accessors, e.g. `st["size"].to_u64()` and `st["is_file"].to_bool()`. When the path does not exist, `exists` is false.

:example
file_put_contents("/tmp/doc-stat.txt", "12345");
DValue st = file_stat("/tmp/doc-stat.txt");
print("size=", st["size"].to_u64(), " is_file=", st["is_file"].to_bool() ? "yes" : "no", "\n");

:see
>sys
dir_list
file_exists
file_mtime