JS Built-ins
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Symboliteratorintermediate

Symbol.iterator — not in global registry

📖 Usage Example
Symbol.keyFor(Symbol.iterator)   // → undefined

Well-known symbols like Symbol.iterator exist outside the global string-keyed registry.

Well-Known Symbol Not in Global Registry

Symbol.iterator is a built-in well-known symbol, NOT registered via Symbol.for(), so Symbol.iterator !== Symbol.for('Symbol.iterator').

Challenge: Verify they are not the same.

💡 Hints (1)
  • • Well-known symbols like Symbol.iterator are not part of the global string-keyed registry.