JS closure results in "Unexpected unnamed function" warning from eslint

I was attempting to use the core .eslintrc.json to lint the JS of a project I'm on and ran into what I believe is a bug or at least a conflict with the documented coding standards.

It seems the closure/wrapper required in the JS coding standards handbook page → (and found in every core es6.js file I've seen) causes this eslint warning:

warning Unexpected unnamed function func-names

In a local project file I was able to do the following to get around it:

Old:

(function (Drupal, bar) {
...
}(Drupal, window.foo));

New:

((Drupal, bar) => {
...
})(Drupal, window.foo);

I'm not certain that approach would work throughout core, but I wanted to at least present the idea as a potential way forward here.