Re: [w3c/webcomponents] Disconnected Events (#678)

> If you're fine with the micro-task timing, you should just use https://developer.mozilla.org/en-US/docs/Web/API/MutationObserver. It's implemented in all major browsers now.

How would you use that exactly in this case, short of watching the entire document?

> No. We'd have to add it for each custom element reactions based on use cases.

Just disconnected would be great. Doesn't really make sense to emit connected since no-one will/can be listening, it's commonly used for housekeeping, and it's very painful to try replicate with MutationObservers (i.e. compared to attributes where you just need to observe a single node).

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