Twig linting for tests/CI (similar to PHPStan and ECS)

[jamesmacwhite]

On a project I made a fairly large update to many core Twig templates which are extended or inherited across various templates. It raised the question around some form of Twig lint/testing tool to be able to identify issues such as syntax errors after the refactor. Because the change modified many files it was hard to defend against regressions.

It would be good if there was a way to do Twig lint checks for ad-hoc or CI purposes Symphony has https://symfony.com/doc/7.3/templates.html#linting-twig-templates

There appears to be other tools: https://github.com/friendsoftwig/twigcs

It would be nice if Craft CMS potentially either provided something similar or shipped a ruleset that can work with an existing tool.

[jamesmacwhite]

It would appear at least one unofficial Craft CMS Twig ruleset exists for twigcs: https://github.com/acalvino4/craft-twigruleset