With React / TypeScript, even the setup of the test suite as I mentioned is painful, which one do you use? playwright? that one is going to be slow and cumbersome, LiveView's built in test suite does the same thing and is much more lightweight and fast. If not playwright which do you use? Jest? Vitest? this is the problem with JS community, too many choice on things that in the end don't matter to the end user.

Also the fact that you have to setup API endpoints for your data, with liveview, you have direct access to the data. You can load any state with a function call instead of having to develop a separate endpoint for your frontend, handle hydration etc... You need real-time updates? It's done out of the box, you don't have to think about it. With react, that stuff is just ALOT to do.

I ended up removing a lot of controllers from my codebase that was there just to service the react front-end. Having those controllers do not service as the "API" of the app. Specs for front-end apis and core APIs are usually quite different based on my experience.

The easiest way I can explain it is LiveView is the least friction between thought and output. React / TypeScript just gets in the way because of all the choice and abstractions you have to build for it.

Don't get me wrong, React still has it's place, there are things I would still use react for, like if I need to render something visually rich, like a flow diagram (reactflow.dev), or video component, or make something like Figma, or a calendar / gantt chart, but for most front-end UIs (95%) you just don't need React.