WeakRefderefbeginner

WeakRef.deref — array reference

📖 Usage Example

const cache = new WeakRef(computeExpensiveResult())
const result = cache.deref() ?? recompute()

Use deref() with nullish coalescing to fall back to recomputation if the object was GC'd.

WeakRef with Array

You can hold a weak reference to an array. deref() returns the same array.

Challenge: Verify deref on an array WeakRef.

💡 Hints (1)

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