Frontend · Senior · Theory

How are closures related to memory leaks in a long-lived SPA? Tell me how you found and fixed leaks like that.

~4 min by voice

How to approach it

This checks whether you understand how closures retain memory (the function is reachable → its lexical environment stays alive) and whether in practice you can find a leak with heap snapshots and fix it with proper cleanup. At the senior level a real case with numbers is expected.

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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