FileError was a type specific to this spec defined as a subclass of DOMError. Only Chrome implemented FileError and we're trying to eliminate DOMError from the platform as well.
Chrome has removed FileError from the implementation of this API, replacing usage with DOMException, but this has not yet hit "stable". This is a corresponding spec change, which will hopefully prove to be web compatible. This simplifies the specification but does re-introduce the use of TypeMismatchError which is otherwise slowly being removed from the platform.
FileError was a type specific to this spec defined as a subclass of DOMError. Only Chrome implemented FileError and we're trying to eliminate DOMError from the platform as well.
Chrome has removed FileError from the implementation of this API, replacing usage with DOMException, but this has not yet hit "stable". This is a corresponding spec change, which will hopefully prove to be web compatible. This simplifies the specification but does re-introduce the use of
TypeMismatchError
which is otherwise slowly being removed from the platform.