FinalizationRegistrybeginner

FinalizationRegistry — typeof

📖 Usage Example

const reg = new FinalizationRegistry(k => cleanupCache(k))
reg instanceof FinalizationRegistry  // → true

FinalizationRegistry instances can be verified with instanceof.

typeof FinalizationRegistry Instance

typeof new FinalizationRegistry(() => {}) is 'object'.

Challenge: Verify the type.

💡 Hints (1)

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