Heyo, the following discord channel has been made for the purpose of converting .map to .Lua
It might serve for a lightweight converter that has no installation other than discord. Follow the instructions in #get-started. For any support regarding the bot, please go to #support as I myself didn't make it, I'm simply spreading the word so people can benefit from it.
Currently supports:
Scale
Breakablility
Double Sided
Collisions
Alpha
RemoveWorldModels
Setting Interior
Setting Dimension
How it essentially works: