coffeelint is a linter for CoffeeScript code, analyzing style, syntax, potential errors, and code consistency issues. It scans CoffeeScript files for patterns such as missing semicolons, inconsistent indentation, unused variables, suspicious constructs, and bad practices, and reports warnings or errors. The tool is configurable via a ruleset file so projects can tailor which rules to enforce and which to allow or warn only. Because CoffeeScript’s syntax can mask subtle errors or ambiguity, a linter helps catch mistakes early (before runtime) and encourages consistent code style across teams. The project supports various output formats (plain text, JSON) so results can be consumed in editors, CI systems, or integrated developer tools. It targets CoffeeScript codebases, especially those in Node.js or frontend toolchains, to improve code quality and reduce debugging overhead.