Error: An element descriptor’s .kind property must be either “method” or “field”Anna Coding·FollowPublished inAnna Coding·1 min read·Mar 9, 2020--ListenShareAn element descriptor's .kind property must be either "method" or "field" - Anna CodingAn element descriptor's .kind property must be either "method" or "field" when upgrade to Babel 7 from Babel 6.annacoding.com