Experiment with using a virtual DOM framework (like React or Vue) to re-render partials in order to improve selective refresh performances

[westonruter]

Re-rendering the entire post content partial with each change to a post's content can be a very expensive operation, especially when there is a lot of content. This performance could be improved not only by increasing the refreshBuffer (see https://core.trac.wordpress.org/ticket/38954) but also we could use some new virtual DOM techniques to only update the DOM where it has changed.

[westonruter]

See conversation at https://wordpress.slack.com/archives/core-customize/p1481418711000375

[BE-Webdesign]

I would recommend using a straight up vdom library, as they are the most flexible and do not lock you into any kind of structuring like React does (love React, but I don't think it is worth using unless the customizer is rewritten in it and there are libraries like Cycle.js that might better fit something like the customizer)

I have never even looked at Vue.js, so I cannot comment on that. I like using https://github.com/Matt-Esch/virtual-dom. All it is is a vdom library nothing else. The customizer already has a style to the code. Using something like vdom to enhance customize posts, I believe would be a better fit. However, I do not know what the best choice is. I will try to mess around with some simple ideas for this plugin today.