svelte/test/runtime/samples/computed-values/main.html

<script>
	export let a = 1;
	export let b = 2;

	export function c() {
		return a + b;
	}

	export const cSquared = () => c() * c();
</script>

<p>{a} + {b} = {c()}</p>
<p>{c()} * {c()} = {cSquared()}</p>