Be able to use any language for the front end is great thing, but I have a concern for existing frameworks&#x2F;libraries.<p>If someone build a great tool, lest&#x27;s say the equivalent of D3.js, in Java; I don&#x27;t see a way I can use it in python without having to write a python API for that library.<p>It&#x27;s not necessarily bad. The first advantage being, that hopefully people are going to stop recreating new javascript frameworks every 2 months.