Lean Scirpt

Syntax

# this is a comment

# assign
a = 1;
b = 2 + 3 * 4;

# string
c = "Hello World!"

# block scoped variable
let (a = 10, b = 20) {
  a + b;
}

# function
fib = func(n) if n < 2 then n else fib(n - 1) + fib(n - 2);
        

Usage

The language is packed as an UMD style library under namepsace LS

<script src="path/to/lean-script.js"></script>
<script>
  // 13
  console.log(LS('fib = func(n) if n < 2 then n else fib(n - 1) + fib(n - 2); fib(7);'))
</script>
        

Try it out