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Duplicate removal spins forever — JavaScript debugging challenge | BugHunt

javascriptInfinite loopHard

Duplicate removal spins forever

Time: 0:00

What it should do

dedupe(arr) should return the array with duplicates removed, keeping the first occurrence of each value.

What goes wrong

Calling dedupe([1,2,2,3]) hangs — it never gets past the first element.

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Hints

This is an infinite loops bug

The tab freezes, nothing prints, and the loop condition never becomes false.

Learn the infinite loops pattern