toy-js

A compile-to-js language written in itself

So far it has a semi-functional formatter and type checker is in progress

Some of the work has been done on youtube

The results are as of bootstrapping there were ~1500 lines of toy-js vs the ~2000 lines of javascript, meaning there's been a roughly 25% reduction in code size. This is mostly due to the dataclass syntax.

Progress

Bootstrapping [DONE]

• can compile the lexer
• can compile the parser
• can compile the codegen

Formatting

• can format the formatter
• can format lexer
• can format parser
• can format codegen

Type Checker

• basic functions
• primitives (number, string)
• builtins for console
• basic let type inference
• infer array type
• lexer.lang
  • #scan
  • getters & instance var defs
• ... more

Syntax

this snippet shows off some of the usable features so far

let ten = comptime! 5 + 5
def add(a, b)
  return undefined if !a || !b
  return a + b
end

print(ten)

dataclass Person(name, age)

let p = new Person("marcelle", 25)

# more, see the .lang source files for more

https://justforfunnoreally.dev/