17 lines
556 B
TypeScript
17 lines
556 B
TypeScript
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type Measurable = {
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getBoundingClientRect(): DOMRect;
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};
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/**
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* Observes an element's rectangle on screen (getBoundingClientRect)
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* This is useful to track elements on the screen and attach other elements
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* that might be in different layers, etc.
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*/
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declare function observeElementRect(
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/** The element whose rect to observe */
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elementToObserve: Measurable,
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/** The callback which will be called when the rect changes */
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callback: CallbackFn): () => void;
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type CallbackFn = (rect: DOMRect) => void;
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export { type Measurable, observeElementRect };
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