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JS
JavaScript error

TypeError

The JavaScript exception "cyclic object value" occurs when object references were found in JSON. JSON.stringify() doesn't try to solve them and fails accordingly.

Reference entryJavaScriptFetched
This is a reference entry from MDN Web Docs. A full explanation with fixes has not been written yet.

The error messages

TypeError: Converting circular structure to JSON (V8-based)
As listed by MDN Web Docs
TypeError: cyclic object value (Firefox)
As listed by MDN Web Docs
TypeError: JSON.stringify cannot serialize cyclic structures. (Safari)
As listed by MDN Web Docs

Details

Category
TypeError
Severity
error
Runtime
both

Related errors

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Source: MDN Web Docs. Data fetched 2026-09-25T01:48:37.273Z.