wchkdsk is webOS check disk for microsoft filesystem (ntfs, exfat, fat). wchkdsk is just wrapper program to execute fsck repectively. It satisfy requirement of webOS. It need to below projects.
ntfs : ntfsprogs-plus (https://github.com/ntfsprogs-plus/ntfsprogs-plus)
exfat : exfatprogs (https://github.com/exfatprogs/exfatprogs)
fat : fatprogs (https://github.com/fatprogs/fatprogs)