Adding _G access to starfall safely

sf_globalaccess.lua

local function addModule(name, exec)
	if not SF.Modules then error("SF Modules table doesn't exist!") end
	SF.Modules[name] = {
		["injected"] = {init = exec()}
	}
end

local function reloadSFEditor()
	pcall(function()
		if SF.Editor.initialized then
			SF.Editor.editor:Close()
			for k, v in pairs(SF.Editor.TabHandlers) do
				if v.Cleanup then v:Cleanup() end
			end
			SF.Editor.initialized = false
			SF.Editor.editor:Remove()
			SF.Editor.editor = nil
		end
	end)

	include("starfall/editor/editor.lua")
end

addModule("env", function()
	local registerPrivilege = SF.Permissions.registerPrivilege

	registerPrivilege("env", "_G", "Whether everyone can use _G. Don't set this to everyone please.", {
		client = {
			default = 4 -- [1] ONLY YOU, [2] ANYONE, [3] FRIENDS, [4] NO ONE
		}
	})

	-- Reload all of the permissions manually
	SF.Permissions.loadPermissionOptions()

	-- Add documentation for env()
	SF.Docs.Libraries.builtins.methods.env = {
		class = "function",
		description = "Returns _G, requires permission 'env'",
		name = "env",
		path = "libs_sh/builtins.lua#L69",
		realm = "client",
		returns = {
			[1] = {
				description = "Lua's global table.",
				type = "table"
			}
		}
	}

	-- Reload the SF Editor so that functions like env() highlight with the documentation.
	reloadSFEditor()

	return function(instance)
		local checkpermission = SF.Permissions.check

		local builtins_library = instance.env
		local eunwrap = instance.Types.Entity.Unwrap

		--- Returns _G, requires permission 'env'
		-- @return table _G
		function builtins_library.env()
			checkpermission(instance, nil, "env")
			return _G
		end
	end
end)