[girvo]

The main reason is that integrating web-components into a server-side rendered language (such as PHP, Java, et al) that generates HTML is much simpler than setting a V8 context to do SSR of React components.

React is brilliant and my favourite library and architecture, but without things like react-standalone[0] integrating singular components within an existing application, especially one that isn't completely client-side, is rather painful at times!

[0] https://www.npmjs.com/package/react-standalone

[noir_lord]

The "completely client side" thing is the killer feature for things like Skate/Knockout components.

A lot of my applications are either legacy or hybrid's, somewhat heavy JS on the client side but not SPA's, I think of them as lots of mini-SPA's (routing and such is still handled by the server), I've actually found that approach much easier to reason about and it has the benefit of clean seperation of concerns, the downside is that you have to think more carefully about synchronisation between client and server.