That's irrelevant in many ways. non-javascript languages deal with this by improving the existing tools. And realistically speaking, yarn is not a discernable

That's irrelevant in many ways. non-javascript languages deal with this by improving the existing tools. And realistically speaking, yarn is not a discernable improvement over npm. The cultural experiment has a huge cost to programmers and it's been an utter disaster. Even PHP has leapfrogged javascript.