[bzalasky]

Small correction on the chart, React has actually been open sourced for ~5 years, React Native is ~3 years old.

As far as how fast frontend technologies are changing, in my ~10 year career, I've only had to use jQuery (~2008-present), Backbone (~2012-present) and React (2015-present) professionally. These libraries weren't swapped out on a whim, and I still use all 3 in different projects on a weekly basis. While I've dabbled with most of the others, I haven't selected them or encountered them professionally.

To some extent, I think library churn can be attributed to keeping things interesting when the problems you're solving are less interesting.

Most frontend engineers could probably benefit from rolling their own SPA library (not for production use, but to learn how the different pieces come together). There's probably room for a few more "From Scratch" tutorials in this space akin to Destroy All Software's series of screencasts. Working through something like this would make it clear that the differences between the libraries above are smaller than it might otherwise seem.