Svelte · Senior · Question 9 of 75

What does `$effect.tracking()` return?

✓Correct answer: Whether the code is running in a tracking context (an effect or template), useful for libraries that set up subscriptions lazily
2The list of dependencies
3Whether SSR is active

Explanation

Reading a value outside tracking context can't subscribe, so a library may return a snapshot instead.

Further reading

Svelte: $effect ↗

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