We looked at several alternative extensions and it was the least egregious of them: <a href="https:&#x2F;&#x2F;github.com&#x2F;nodejs&#x2F;node-eps&#x2F;blob&#x2F;master&#x2F;002-es6-modules.md#reason-for-decision" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;nodejs&#x2F;node-eps&#x2F;blob&#x2F;master&#x2F;002-es6-modul...</a>