Web Components can be barebones, use no dependencies, do all DOM manipulations directly. That would give you vanillajs performance. It won't be easy to scale to

Web Components can be barebones, use no dependencies, do all DOM manipulations directly. That would give you vanillajs performance. It won't be easy to scale to big components this way--the use case is small components with minimal state, something like a time picker at most. Integrating the Web Component into React should not be much harder than integrating an <video> element. At best, do nothing or at worst, create a Ref and attach an event listener. The benefit is this would work across all other JS frameworks. Web Components are primitive, like the C ABI, but everyone can speak it, like the C ABI.