This is a programming language I created under 2 weeks to challenge myself. Please checkout the Wiki page for more details. It is basically a subset of Scala (in terms of syntax and semantic). It is still buggy but factorial and fibonacci examples work on it :)Open source: https://github.com/amir734jj/toy-lang
Wiki: https://github.com/amir734jj/toy-lang/wiki/Grammar
Playground (factorial example): https://toy-lang.herokuapp.com/