You want to:
Read (and possibly write) data from asyncStorage in native module (java/swift)
Is there a way to read (and possibly write) saved data by js code from native module?
I found some workarounds for java on Stackoverflow but posts there are from more than 3 years ago.
If currently there is no public api for it could you please point me into right direction of implementing something which might be at least a bit future proof (considering ASv2 work)?