Svelte · Middle · Question 5 of 75

How do you read state inside `$effect` without making it a dependency?

import { untrack } from "svelte";

$effect(() => {
  save(data, untrack(() => settings.format));
});

✓Correct answer: Wrap the read in untrack(() => ...)
2Read it in onMount instead
3Use $state.snapshot, which also untracks

Explanation

The effect re-runs when data changes but not when settings.format changes.

Further reading

Test yourself

Take the Svelte · Middle quiz: questions and options are shuffled, and you get a review of your mistakes at the end.