Luau Goes Open-Source

• luau

  64 3,615 9.0 C++

  A fast, small, safe, gradually typed embeddable scripting language derived from Lua

  

Actually went ahead and wrote an RFC for this: https://github.com/Roblox/luau/pull/109

• moonscript

  35 3,118 4.4 Lua

  :crescent_moon: A language that compiles to Lua

Heck yeah.

I don't know what this fork changes, but I love how many game engines will take lua and expand it in major ways like this.

Very few scripting languages make it as easy to do as lua.

This is an interesting related project:

https://moonscript.org/

It compiles down to lua, and really beefs everything up. Interface is super nice too. You just put `require "moonscript"` at the top of the file and you're done, now just write your code in moon script.

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• Fennel

  90 2,289 9.3 Fennel

  Lua Lisp Language

There is also a Fennel[1] that builds a LISP on top of Lua.

[1] https://fennel-lang.org/

• kiwi

  2 656 5.6 C++

  Efficient C++ implementation of the Cassowary constraint solving algorithm (by nucleic)

  

If any of the Luau devs are watching this, please flesh out the metamethods. I'd switch almost everything to Luau if they were improved.

They're the biggest PITA right now as designed in PUC-Rio, and I see that while you've improved upon __eq, other metamethods are still lacking.

In PUC-Rio, boolean equality operators FORCE a boolean result, regardless of what you return. Ideally they would allow returning any result type, which then can be coerced to boolean later (e.g. by an `if` statement), just like the arithmetic operators do.

Further, `__neq`, `__ge` and `__gt` do not exist. They should.

The lack of a proper metamethod design means that binding to e.g. Kiwi[0] is impossible without some incredibly fugly hacks. It has been a long-standing annoyance with Lua in an otherwise beautiful little scripting language (that I use frequently).

This looks quite nice - lots of attempts in this space but nothing that attempts to match Lua to this degree.

[0] https://github.com/nucleic/kiwi

• tl

  54 1,935 7.7 Lua

  The compiler for Teal, a typed dialect of Lua

  

There is Teal language that has type annotations and could output plain Lua: https://github.com/teal-language/tl

• lua-languages

  13 555 3.9

  Languages that compile to Lua

Doubtful, but there is TypescriptToLua: https://typescripttolua.github.io/

Here's a whole list of languages that compile to Lua (many of them statically typed): https://github.com/hengestone/lua-languages

• kailua

  1 166 2.1 Rust

  Discontinued 🌴 Type Checker and IDE Support for Lua

  

There is a language [1] that type check by adding comments instead of fixing Lua (like Flow comment syntax [2]), I wonder if the Luau team has considered this language.

[1] https://github.com/devcat-studio/kailua

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• LuaJIT

  1 2 10.0 C

  Mirror of the LuaJIT git repository (by zewt)

Suggest a related project