svelte/test/runtime/samples/reactive-assignment-in-for-loop-head/main.svelte

<script>
	let foo1;
	let foo2;
	for (let bar = (foo1 = 0); bar < 5; bar += 1) {
		foo2 = foo1;
	}
	function a() {
		for (let bar = (foo1 = 0); bar < 5; bar += 1) {
			foo2 = foo1;
		}
	}
</script>

<h1>{foo1} {foo2}</h1>