The Wikidata team wants to experiment with vue.js/Vuex as a framework for state management, value binding, and templating. This is a tracking ticket for using vue.js in the Wikibase frontend on wikidata.org.
See also T157014: CONSULTATION/PLAN: Managing Complex State and GUI on MediaWiki (e.g. for Wikidata/Wikibase UI)
See T167134#3322294 for the rationale for using vue.js