Tool to generate Javascript SDK for RPC based Modules

I’m trying to create an npm module for my chain (a cosmos zone) which will act like javascript-sdk for my chain, to be used to build apps. There is an already existing tool called telescope (osmonauts) but it only converts from proto based modules. My chain only has RPC implemented yet. Any tools available which will assess all the RPC based custom modues in my chain and generate the JS / TS sdk (javascript api) for the same?