WeakMaphasintermediate

WeakMap.prototype.has() — different objects

📖 Usage Example

const wm = new WeakMap()
const k = {}
wm.set(k, undefined)
wm.has(k)  // → true

has() returns true even if the stored value is undefined.

WeakMap Key Identity

Object identity matters — similar-looking objects are different keys.

Challenge: Verify that two object references are independent.

💡 Hints (1)

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