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Add ShadowRoot to AnchorPositioningRoot type #387

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Merged
jamesnw merged 2 commits into from
Mar 13, 2026
Merged

Add ShadowRoot to AnchorPositioningRoot type #387

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f61b098
Add ShadowRoot to AnchorPositioningRoot type
jamesnw Mar 13, 2026
ac564f8
update docs
jgerigmeyer Mar 13, 2026
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -119,7 +119,7 @@ document will be implicitly polyfilled.

### roots

type: `(Document | HTMLElement)[]`, default: `[document]`
type: `(Document | HTMLElement | ShadowRoot)[]`, default: `[document]`

By default the polyfill applies to `document`, but you can configure one or more
shadow roots the polyfill should apply to using this option. See the
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2 changes: 1 addition & 1 deletion src/polyfill.ts
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Expand Up @@ -560,7 +560,7 @@ async function position(rules: AnchorPositions, useAnimationFrame = false) {
}
}

export type AnchorPositioningRoot = Document | HTMLElement;
export type AnchorPositioningRoot = Document | HTMLElement | ShadowRoot;

export interface AnchorPositioningPolyfillOptions {
// Whether to use `requestAnimationFrame()` when updating target elements’
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