The Error.isError() static method checks whether a value is an Error object.

Learning resources on MDN

• Error.isError()

Browser support

• Chrome 134 Released on 2025-03-04
• Chrome Android 134 Released on 2025-03-04
• Edge 134 Released on 2025-03-06
• Firefox ❌
• Firefox for Android ❌
• Safari ❌
• Safari on iOS ❌

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