require-each-key.md

Pattern: Missing use of keyed {#each} block

Issue: -

Description

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.

📚 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