teoxoy / lua-in-js Goto Github PK

Is it possible to communicate variables between Lua and Javascript with this library?

I can't seem to find any task lib.

For example you can't use the function Wait() or task.Wait()

lua for loops dont seem to compile into js for loops

Will there be a browser version, just like with Starlight?

this would be good for scripting lua in games. this would also make it easier for anyone to use

In my Javascript script code I'm loading a class with all of its functions and properties, then returning loading that library. How could I set a lua variable when creating that class. Example:
Javascript:

function newClass(){
    const example = new Class()

    const name = example.name
    const id = example.id

    function changeName(newName) {
        return example.name = newName
    }

    const lib = new luainjs.Table({
        name,
        id,
        changeName
    })

    return luaEnv.loadLib("Example", lib)
}

luaEnv.loadLib("Instance", new luainjs.Table({
    newClass
}))

Then in lua I am trying to do:

    local ex = Instance.newClass()
    print(ex.name,ex.id)

Without doing

    local ex = Instance.newClass()
    print(Example.name,Example.id)

For context, I am using lua-in-js for unit testing redis scripts in node. It mostly works great for this, thanks! However I noticed that mocks were getting called multiple times in some scripts when I didn't think they should be.

Turns out that some logical operators appear to evaluate the LHS twice. This makes sense as it looks as transpilation for them is implemented via simple string substitution:

This should probably be updated to assign the result of left to a local variable first, assuming you have some mechanism to maintain hygiene and avoid unintended shadowing? I'm no Lua expert but I think it is not supposed to eval LHS twice. Please correct me if I'm understanding something wrong, I really just glanced over and made a lot of assumptions!

• math.random():
  Generates a random floating-point number in the range [0, 1).
• math.random(upper):
  Generates a random integer in the range [1, upper].
• math.random(lower, upper):
  Generates a random integer in the range [lower, upper].

function random(min, max) {
    if (min === undefined && max === undefined)
        return getRandom();
    const firstArg = coerceArgToNumber(min, 'random', 1);
    const MIN = max === undefined ? firstArg : 1;
    const MAX = max === undefined ? coerceArgToNumber(max, 'random', 2) : firstArg;
    if (MIN > MAX)
        throw new Error("bad argument #2 to 'random' (interval is empty)");
    return Math.floor(getRandom() * (MAX - MIN + 1) + MIN);
}

should be:

const MIN = max !== undefined ? firstArg : 1;
const MAX = max !== undefined ? coerceArgToNumber(max, 'random', 2) : firstArg;

I'm trying to require another file and whenever I try to require it, my console errors and tells me that the module is not found. The path the file is located in is: ../node_modules/lua-hill/modules/globals. I call:

local mod = require("../node_modules/lua-hill/modules/globals")

and then my console spits out: message: "Module '../node_modules/lua-hill/modules/globals.lua' not found!"

how to use lua-in-js ?

First thanks for making this lib, can't really guess how I would make something like this myself.

I'm trying to add a global variable which is a table but I'm having no luck doing it.

Lua Code Example:

Trace = lua.Trace
Warn = lua.Warn

MersenneTwister = { Random=math.random, Seed=math.randomseed }

PLAYER_1 = "PlayerNumber_P1"
PLAYER_2 = "PlayerNumber_P2"
NUM_PLAYERS = #PlayerNumber

The problem I'm having is with trying to add PlayerNumber as the file I'm executing expects it to be a defined global. It was trivial to add lua.Trace and lua.Warn with the documentation provided at the readme, I simply did was such bellow

const luaAdditional = new luainjs.Table({
	Trace: (msg) => {
		console.log(msg)
	},
	Warn: (msg) => {		
		console.warn(msg)
	}
})
luaEnv.loadLib('lua', luaAdditional)

However, I can't find exactly how I could add a global table, I've tried adding it to the global variable directly such as

const globalEnv = new luainjs.Table({
	PlayerNumber: new luainjs.Table({ '1': 'PlayerNumber_P1' })
})
luaEnv.loadLib('_G', globalEnv)

And it did not work, I tried looking at what the table gets transformed into lua-side and also tried this:

const globalEnv = new luainjs.Table({
	keys: [1, 2],
	values: ['PlayerNumber_P1', 'PlayerNumber_P2']
})
luaEnv.loadLib('PlayerNumber', globalEnv)

But whatever I added as argument to the Table method would always be inside srtValues.

Given my failed attempts, how could I add a PlayerNumber table as a global to the file I parse?

Here's the result I'm trying to reach:

(Both are from kaboomJS)

this is a any[]