test: add luacheck

.luacheckrc

@@ -0,0 +1,61 @@
+-- Luacheck config for CC:Tweaked (ComputerCraft) Lua sandbox.
+-- Runtime is Lua 5.1 inside the CC sandbox, not standard Lua, so we
+-- extend lua51 with the globals and os/table extensions CC provides.
+
+stds.cc = {
+  read_globals = {
+    -- ComputerCraft APIs injected as globals by the sandbox.
+    "fs",
+    "peripheral",
+    "parallel",
+    "shell",
+    "term",
+    "textutils",
+    "colors",
+    "colours",
+    "rednet",
+    "gps",
+    "http",
+    "settings",
+    "window",
+    "paintutils",
+    "keys",
+    "vector",
+    "commands",
+    "disk",
+    "periphemu", -- CraftOS-PC emulator only
+    "read",
+    "sleep",
+    "write",
+    -- CC extends the standard os/table tables with extra fields.
+    os = {
+      fields = {
+        "getComputerID", "getComputerLabel", "setComputerLabel",
+        "queueEvent", "pullEvent", "pullEventRaw",
+        "startTimer", "cancelTimer", "sleep",
+        "reboot", "shutdown", "version",
+        "epoch", "day", "clock", "time",
+        "loadAPI", "unloadAPI", "run",
+      },
+    },
+    table = {
+      fields = { "pack", "unpack" },
+    },
+  },
+}
+
+std = "lua51+cc"
+
+-- _G.isRouterEnabled is a cross-module flag set/read at runtime; `_` is the
+-- throwaway global used in router.lua.
+globals = {
+  "isRouterEnabled",
+  "_",
+}
+
+-- `_VERSION` is a per-module convention (see CLAUDE.md) and intentionally unused.
+ignore = {
+  "211/_VERSION", -- unused local _VERSION
+}
+
+max_line_length = false

Justfile

@@ -0,0 +1,10 @@
+# Justfile for cc-libs
+# Run `just check` to lint all Lua code with luacheck.
+
+# List available recipes.
+default:
+    @just --list
+
+# Lint all Lua source with luacheck.
+check:
+    luacheck apis programs servers startup install.lua

programs/cube.lua

@@ -239,9 +239,9 @@ local function deployCommand()
       local filePath = allFiles[i];
       local fileContent = readFile(filePath)
 
-      local ok, res = net.sendRequest(CUBE_CHANNEL, 'deploy-file', { path = filePath, content = fileContent }, machineId);
+      local transferOk, res = net.sendRequest(CUBE_CHANNEL, 'deploy-file', { path = filePath, content = fileContent }, machineId);
 
-      if ok and res then
+      if transferOk and res then
         fileTransfered = fileTransfered + 1;
       else
         print('Error transfering file \'' .. filePath .. '\'');

programs/router.lua

@@ -7,11 +7,9 @@ if firstArg == '-version' or firstArg == '--version' then
   return;
 end
 
-local verbose = true
 local printVerbose = print
 
 if firstArg == '-silent' or firstArg == '--silent' then
-  verbose = false
   printVerbose = function() end
 end
 

startup/servers.lua

@@ -44,7 +44,7 @@ local function getServerFns(serverList)
   local servers = {};
 
   for k, v in ipairs(serverList) do
-    local serverName = serverList[k];
+    local serverName = v;
 
     servers[k] = function()
       if serverName then