Usage with Lemur

Learn how to use Lemur with roblox-ts and set up a continuous integration testing suite.

You can use roblox-ts without Roblox Studio through the use of LPGHatGuy’s lemur.

This is only really useful for testing new changes to the compiler and only supports a small subset of Roblox features. However, it does enable you to use the runtime library functions without changing any compiled code.

Please refer to the lemur project README for installation instructions.

It’s easiest to copy the lib folder into your project directory and rename it to lemur.

From here, you can create a file called test.lua at the root of your project directory. It should look something like this:

package.path = package.path .. ";?/init.lua"
local lemur = require("lemur")

local habitat =

local ReplicatedStorage ="ReplicatedStorage")

local includeFolder = habitat:loadFromFs("include")
includeFolder.Name = "include"
includeFolder.Parent = ReplicatedStorage

	local moduleFolder = habitat:loadFromFs("include/node_modules")
	moduleFolder.Name = "node_modules"
	moduleFolder.Parent = includeFolder

local out = habitat:loadFromFs("out")
out.Name = "out"
out.Parent = ReplicatedStorage


You may need to edit that file based on your project needs.

You will also need a suitable default.project.json Rojo file to describe where your code is in Roblox (or Lemur in this case).

	"name": "lemur-test",
	"tree": {
		"ReplicatedStorage": {
			"$className": "ReplicatedStorage",
			"include": {
				"$path": "include"
			"out": {
				"$path": "out"

Finally, just compile and run with:
rbxtsc && lua test.lua