require-each-key.md

pageClass	sidebarDepth	title	description	since
rule-details	0	svelte/require-each-key	require keyed `{#each}` block	v2.28.0

svelte/require-each-key

require keyed {#each} block

📖 Rule Details

This rule reports {#each} block without key

<script>
  /* eslint svelte/require-each-key: "error" */
</script>

<!-- ✓ GOOD -->
{#each things as thing (thing.id)}
  <Thing name={thing.name} />
{/each}

<!-- ✗ BAD -->
{#each things as thing}
  <Thing name={thing.name} />
{/each}

🔧 Options

Nothing.

👫 Related Rules

• svelte/valid-each-key

📚 Further Reading

• Svelte - Tutorial > 4. Logic / Keyed each blocks

🚀 Version

This rule was introduced in eslint-plugin-svelte v2.28.0

🔍 Implementation

• Rule source
• Test source