Luacheck is a static analyzer and linter for Lua code that detects various issues such as undefined global variables, unused variables and values, accessing uninitialized variables, unreachable code, and more.

​
Supported Files

Luacheck will run on files with the following extensions:
  • .lua

​
Configuration

Luacheck supports the following configuration files:
  • .luacheckrc
  • luacheckrc
  • .luacheckrc.lua
  • luacheckrc.lua
Luacheck does not require configuration to run. If no configuration file is found, it will use default settings.

​
Features

Luacheck can detect:
  • Usage of undefined global variables
  • Unused variables and values
  • Accessing uninitialized variables
  • Unreachable code
  • And many more issues