out-vars-key01-input.svelte

<script>
  let things = [
    { id: 1, name: "apple" },
    { id: 2, name: "banana" },
    { id: 3, name: "carrot" },
    { id: 4, name: "doughnut" },
    { id: 5, name: "egg" },
  ]
  const foo = "key"
</script>

{#each things as thing (foo)}
  {thing.name}
{/each}