Summary: Got this in my dep bump: https://www.internalfb.com/intern/sandcastle/job/13510799320314417/ Babel is having some trouble with a certain syntax in newer d3-array elements: https://github.com/babel/babel/issues/11038 Until that's fixed the recommended work-around is hard-coding the old version which is apparently compatible. Reviewed By: priteshrnandgaonkar Differential Revision: D29107071 fbshipit-source-id: 5a4ba8e698969bc033a76da78ce9116d1cfbbeb4