Re: [WICG/webcomponents] Scoped Custom Element Registry: Moving elements with shadow roots between documents (#907)

@rniwa I'm still not clear about what the problem is. Specifically, I'm having a hard time understanding how is this any different with today's implementation with the global registry, I feel that I'm missing something obvious here. Let me try to articulate an examples:

```
1. A page with 3 same domain iframes, A, B and C
2. Iframe A gets definitions for elements x-foo and x-bar
3. Two instances of x-foo are created and each adopted by iframe B and C
4. Iframe A is detached, but both definitions (x-foo and x-bar) are still accessible from scripts
```

The example above seems like a good description of a similar problem exhibited today, which will prevent the GC to collect iframe A until after B and C are collected. How is this different from what we are discussion here in the context of a scoped registry?

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/WICG/webcomponents/issues/907#issuecomment-830429232