JS Built-ins
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WeakMapdeletebeginner

WeakMap.prototype.delete() — returns false

📖 Usage Example
const wm = new WeakMap()
const k = {}
wm.delete(k)  // → false

delete() returns false when the key was never in the WeakMap.

WeakMap delete() Missing

wm.delete(key) returns false when the key is absent.

Challenge: Verify delete returns false.

💡 Hints (1)
  • • delete() returns false when the key was not found.