Failed to execute `attachShadow` on `Element` in 3.0.0 about import-map-overrides HOT 10 CLOSED

Any update on this?

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It looks like the issue comes from the element already having a shadow root attached. It makes attachShadow throw InvalidStateError exception.

I made a PR that just checks if it is already created, it seems to work fine but maybe I didn't take something into account.

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We have the same problem on page load.

from import-map-overrides.

We have the same problem

from import-map-overrides.

I am seeing the same error. @joeldenning, is there any chance we can get someone to look at this?

from import-map-overrides.

Seeing the same thing. Uncaught DOMException: Operation is not supported.
Happens at value:function(){this.shadow=this.attachShadow({mode:"open"})

Works fine in 2.4.2. Would be great to get this fixed seeing that it's around for some time.
@joeldenning any way we could help here?

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Same error here with version 3.0.0.

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Workaround until fixed:

<!-- <import-map-overrides-full show-when-local-storage="overrides-ui"></import-map-overrides-full> -->
<script>
	const imo = document.createElement('import-map-overrides-full', { is: 'import-map-overrides-full' });
	imo.setAttribute('show-when-local-storage', 'overrides-ui');
	const attachShadowOriginal = imo.attachShadow;
	imo.attachShadow = function (options) {
		return this.shadowRoot ?? attachShadowOriginal.apply(this, [options]);
	};
	document.body.appendChild(imo);
</script>

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@joeldenning , can you release v3.0.1 with a fix?

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This has been released. Closing it.

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