JS Built-ins
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WeakRefintermediate

WeakRef — primitive throws

📖 Usage Example
const ref = new WeakRef({})
typeof ref  // → 'object'

WeakRef is an object type used for memory-sensitive caching scenarios.

WeakRef Primitive

new WeakRef(42) throws a TypeError because WeakRef only accepts objects.

Challenge: Verify that passing a primitive throws.

💡 Hints (1)
  • • WeakRef only accepts objects (including arrays and functions), not primitives like numbers or strings.