Frontend · Mid-level · Theory

How can closures lead to memory leaks in a frontend application, and how would you go about finding such a leak?

~4 min by voice

How to approach it

This checks whether the candidate understands the link between closures and reachability for the garbage collector: where leaks actually come from in practice (handlers, timers, subscriptions that aren't removed) and whether they can find a leak systematically with DevTools rather than by guessing.

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Topics

closures memory leaks

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Answer by voice

The interviewer will ask this question and listen. Think out loud and ask for a hint if you need one. When you're done, pause or tap “That's my answer”. In about a minute, your score and the points you covered show up here.

Best with headphones · ~4 min