This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
toSource() method returns code that could eval to the
A string containing the source code of the error.
toSource method of an
Error instance (including
will return a string containing the source code of the error. This string can be
evaluated to create an (approximately) equal object. Naturally, the string containing
the source follows the structure of the
Error constructor. For example:
where these attributes correspond to the respective properties of the error instance.
Note: Be aware that the properties used by the
method in the creation of this string are mutable and may not accurately reflect the
function used to create an error instance or the filename or line number where the
actual error occurred.
Not part of any standard.
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