How use commitlint only for subject-case setentence case and body-full-stop never

Question

I am trying to use commitlint without using extends: ['@commitlint/config-conventional'],:

module.exports = {
  rules: {
    'subject-case': [2, 'always', 'sentence-case'],
    'type-empty': [2, 'always'],
    'body-full-stop': [2, 'never', '.'],
  },
}

But with this config I still be able to do: $ git commit -m 'hello.' but I expect, that "." in the end is forbidden, also I expect small letter is start of message is forbidden also.

What am I doing wrong?