Svelte · Middle · Question 30 of 75

How do you test an effect created outside a component?

const cleanup = $effect.root(() => {
  $effect(() => log.push(count));
});
// ...
cleanup();

✓Correct answer: Wrap it in $effect.root, which creates a scope you clean up manually
2Effects can only run inside components
3Call $effect directly in the test

Explanation

$effect must run inside a parent effect or component. $effect.root provides that context in tests and long-lived logic.

Further reading

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