[PaulHoule]

We have been using the isolation stuff in Web Components to make React applications that our partners can embed in web pages regardless of what other CSS and JS they use. I don’t know if I’d want to make an application with 100 tiny web components at the level of individual buttons and such that work together but self-contained widgets that pop into a web page look great to me.

[psygn89]

We basically tried wrapping an entire registration app into the Shadow DOM just for a hopeful kick but it came with weird accessibility quirks, arrow keys not always working to go through selections, and some overlays acting strangely. We were using Shadcn which is powered by Radix Primitives, however, and a setup they probably weren't expecting or testing their code to be in.

But for smaller things like chat widgets or players I think it's a great solution.

[PaulHoule]

We had overlay problems with a fancy <Select> control, also systems like Emotion can have trouble, or anything that is portalized or computes coordinates for absolute positioning. We were able to fix all the ones that affected us.

Funny we have been using the HTML <dialog> because you can't really pass accessibility reviews if you use the modal dialogs that come with MUI, Reactstrap, etc. Only <dialog> really inerts the whole page but you run into very similar problems getting components to work properly inside them which we were able to solve for all the components we use inside dialogs, but I think it's an absolute shame that this has not been adopted by MUI or anything I can find in npm -- what I hate about accessibility is that I feel like I'm held accountable and my organization is held accountable but not the people who write trash specs, make trash screen readers that crash my computer, vendors of React components, etc.