Default values for specified properties

[T.J. Crowder]

On Fri, Apr 21, 2017 at 12:11 PM, Michael J. Ryan <tracker1 at gmail.com>
wrote:

> I've always felt that made cloning and serializing Error based instances
> particularly fun.
>

Well, the one on `Error.prototype` is just the `""` default anyway. But
yes, the fact that [`Error`][1] makes the `message` "own" property it
creates non-enumerable is slightly surprising. I'm guessing there's history
there. :-)

-- T.J. Crowder

[1]:
http://www.ecma-international.org/ecma-262/7.0/index.html#sec-error-message
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