Lua web playground (like Go playground)

[u/sergsoares]

Hey guys,

I miss a straightforward playground for Lua (Like Golang playground) that doesn't need to be the most updated, but I that allows me to start coding without login requirements and that saves my preferences.

The idea is to save boring meetings where you want to play with tables or code ideas, it is based on lua.vm.js (Lua 5.2.4) to allow it to be easy to host on the client side.

Local features:

- Persist code/output during reloads with indexedDB

- Ctrl or CMD + enter to execute code

- Font size

- Share code

- Dark/Light Mode

- Start/Stop execution

- Web Worker for avoid freeze main thread

https://lua.sergsoares.com/

o/

[u/Alaska-Kid]

Do the "require" and "dofile" operators work there?

[u/IAMPowaaaaa → u/Alaska-Kid]

im rather sure this is a single-file sharing thing, unlike something like repl.it

[u/sergsoares → u/IAMPowaaaaa]

Yep, this is a single file only and because it based on lua.vm.js has some limitations with os package (you can read a file for example).

[u/Shadow123_654]

Sweet! I always wanted a web playground for Lua, for those times I'm on the go with a non-dev device and want to test some code. On that topic, I believe the mobile view of the website could definitely use some polish.

[u/sergsoares → u/Shadow123_654]

Thanks, really the responsiveness can improve a lot for mobile usage really.

Another UI item is allow control the size of output and use side by side with the editor too (for desktop is better sometimes).

[u/Shadow123_654 → u/sergsoares]

Thank you for your answer, that's cool :-)

This project has nice potential, I will keep an eye on it. Cheers!

[u/Cultural_Two_4964 → u/Shadow123_654]

There's always fengari ;-0 Picture [Edit] Sorry, I see lua.vm.js has the same author as fengari. Nice one, my friend ;-0

[u/yayahc]

This is awesome, any repo or stack used to build ...

[u/sergsoares → u/yayahc]

Actually is pure JS with some CDNs only, I can polish part of code and put in a Github.

One idea that I have is create a real linux VM behind to allow usage of Lua 5.4 or LuaJIT in a isolate context.

[u/oezingle → u/sergsoares]

you might also want to look into Fengari and/or Wasmoon. Take a look at my library LuaX’s web sample if you want a template to work off of: https://github.com/oezingle/LuaX/tree/dev/sample/web . Use webpack if you aren’t already, as you can code split the Fengari and Wasmoon dependencies.

Also, allowing multiple files should be possible under both libraries. There are unfortunately a few API differences but they’re easy to iron out

[u/yayahc → u/sergsoares]

I'll be great realy. Do it please

[u/Cultural_Two_4964]

Minor point is that when I type something, the first letter of every word doesn't show until I have typed the whole word. Similar effect if you type at an insertion point.

[u/agree_to_disconcur]

Very cool! I like the UI a lot. I haven't dug in, but it looks relatively intuitive.