svelte/test/runtime/samples/component-events-each/main.html

<div>
	{#each items as item}
		<Widget on:foo='foo(item)'/>
	{/each}
</div>

<script>
	import Widget from './Widget.html';

	export default {
		components: { Widget },

		methods: {
			foo ( item ) {
				this.fire( 'foo', item );
			}
		}
	};
</script>