Ansible has a linter. We do use it on our playbooks (locally and in CI). There's also a framework for testing and linting ansible plugins (ansible-test IIRC), though that's been a little painful for us to setup.
That said, we do have a lot of helper scripts that we use in our day-to-day (local development). They're not "large bash scripts", but they're small enough that we don't really need a proper programming language. Some degree of code quality with style guides and shellcheck does help.
That said, we do have a lot of helper scripts that we use in our day-to-day (local development). They're not "large bash scripts", but they're small enough that we don't really need a proper programming language. Some degree of code quality with style guides and shellcheck does help.