WeakRefderefbeginner

WeakRef.deref — returns original object

📖 Usage Example

let obj = { x: 1 }
const ref = new WeakRef(obj)
ref.deref()?.x  // → 1

deref() returns the referenced object, or undefined if it has been garbage collected.

WeakRef deref

After const r = new WeakRef(o), r.deref() === o is true.

Challenge: Verify deref returns the original object.

💡 Hints (1)

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