Hmm, I haven't found this to be true. I researched and chose nearly the same stack at work about six months ago, except I chose and we use immutable.js, es7 as

Hmm, I haven't found this to be true. I researched and chose nearly the same stack at work about six months ago, except I chose and we use immutable.js, es7 async functions, flow, and axios. What seems to be about right is that javascript spa frameworks go on two year hype cycles if you look at backbone->angular->react. I suspect react will buck this trend though because it's so heavily used in production consumer apps at facebook/instagram, because of react-native because it got components so right that it's almost hard to build ridiculously long "controllers" when using it, and that it's one way data flow make it a lot harder to write an app with state spread out all over the place rather than in a single client side data model. But who knows, time will tell :-)