WeakRefderefbeginner

WeakRef.deref — typeof result

📖 Usage Example

const ref = new WeakRef({})
const obj = ref.deref()
if (obj) { /* safe to use */ }

Check the result of deref() before using it to avoid null-reference errors.

WeakRef deref typeof

typeof new WeakRef({}).deref() is 'object'.

Challenge: Verify the type of the deref result.

💡 Hints (1)

7/10