svelte/test/runtime/samples/spread-element/main.html

<div {{...props}} data-named="value">{{color}}</div>

<script>
	export default {
		data: () => ({
			color: 'red',
			props: {
				'data-foo': 'bar',
				'data-named': 'qux'
			}
		})
	};
</script>