ember-cli-eslint, ember-cli-stylelint to run automatically only if desired

I understand that the purpose of ember-cli-eslint, ember-cli-stylelint to run automatically.

I am wondering if there is a way to control this behavior.

Like, run ember-cli-eslint, ember-cli-stylelint automatically only if there is certain ENVIRONMENT_VARIABLE or maybe write a custom script.

I am wondering if that is possible. Google search did not provide me any pointer.