JS Built-ins
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WeakSethasintermediate

WeakSet.prototype.has() — different references

📖 Usage Example
const ws = new WeakSet()
const a = {x:1}, b = {x:1}
ws.add(a)
ws.has(b)  // → false

Different object references are distinct entries even if structurally equal.

WeakSet Reference Identity

Two variables pointing to the same object share the same key.

Challenge: Verify alias references behave correctly.

💡 Hints (1)
  • • Two variables pointing to the same object share the same identity.