Standalone cli twig linter (heavily based on twig lint command from symfony-bridge), for those who don't use Symfony (if you do, you are better of using Symfony native lint:twig)

composer require --dev sserbin/twig-linter:@dev

vendor/bin/twig-linter lint /path/to/your/templates

By default *.twig files are searched. Pass in --ext=? (e.g. --ext=html) to override it.

Any non-standard twig's functions/filters/tests are ignored during linting. I.e. if there's invocations of undefined filter this will not be reported by linter as it doesn't know about your specific twig environment.

If, however, you want it to, you can manually add LintCommand to your console application's command set instantiating it with your environment.