Certainly you can see that the LittleFS_<x> functions map very closely to the POSIX versions. So honestly can't see why the functionality can't use the same names.
I have wrapped them for Teensy; now I will be doing it all again for the Pico...
@charnjit: Did you follow the required advice in post #18, post #21, & <post #22> regarding changing the PID each & every time that you made a change (to get around Windows' undesirable caching of configurations) ?? Without making that specific...