WordPress core contributors have started collaborating more around their JavaScript efforts this year with regular core-js meetings. One item on the most recent meeting’s agenda was discussion on choosing a new JavaScript framework for use in core as an alternative to Backbone.
Contributors began by summarizing the criteria for evaluating framework options, includes factors like stability, longevity, maturity, adoption, accessibility, proven in a WordPress context, and extensibility, among others. Most of the discussion centered on the benefits and drawbacks of React vs Vue.
The majority of those who participated in the meeting seemed to favor React, as it is already used with several major WordPress projects such as Calypso, Gutenberg, and Jetpack. WordPress’ project lead, Matt Mullenweg, has publicly stated that Automattic is betting on React long-term. Mullenweg has also expressed a desire for Calypso, or a similar interface, to replace wp-admin in the future. The company has been building its products on React for several years and is pot committed at this point when it comes to the framework.
Source WPTavern