Enables serialization of errors, specifically, DOMException, Error, EvalError, RangeError, ReferenceError, SyntaxError, TypeError, and URIError. An example of where this capability may be used is to pass an Error to a worker using PostMessage().


The primary motivation is Transferable Streams. For example, when we see a read error, we need to pass the error to the remote end.



Specification link

Specification being incubated in a Community Group

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Positive
  • No signal
  • No signals


Last updated on 2021-12-13