I started work on this after I encountered this project on Glitch. After going through everything over there, I felt "making a programming language is so easy!!!", and eventually, made the first version almost in a day! I, gradually, learnt a lot about the basics of compilers and languages.
It is currently incomplete but is in active development. I'd love if you help me in completing this project.
Try it now: https://replit.com/@pavi2410/REPLisp
Source code: https://github.com/pavi2410/REPLisp