svelte/test/runtime/samples/nested-transition-detach-each/main.html

{#if visible}
	{#each rows as row}
		<div out:foo class="row">
			{#each cols as col}
				<div out:foo class="cell">{row}, {col}</div>
			{/each}
		</div>
	{/each}
{/if}

<script>
	export default {
		transitions: {
			foo(node) {
				return {
					duration: 100,
					tick: t => node.foo = t
				};
			}
		}
	};
</script>