vector-utils.js
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vector-utils.js
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	// @flow

	import invariant from 'invariant';

	declare class SVGElement {
	parentNode: Element;
	}

	function htmlTargetFromEvent(event: SyntheticEvent<*>): HTMLElement {
	let target = event.target;
	while (!(target instanceof HTMLElement)) {
	invariant(
	target instanceof SVGElement,
	'non-HTMLElements in typeahead should be SVGElements',
	);
	target = target.parentNode;
	}
	return target;
	}

	export { htmlTargetFromEvent };