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https://issues.apache.org/jira/browse/THRIFT-1232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pascal Bach updated THRIFT-1232:
--------------------------------

    Attachment: 1232-Improve-Exception-handling-and-make-error-hierarchy.patch

I improved the prototype hirarchy in Thrift.js so it is now closer to the C++ 
code. TApplicationException is now derived from TException. This should give a 
more consisten feeling

> JavaScript TException should be a constructor function
> ------------------------------------------------------
>
>                 Key: THRIFT-1232
>                 URL: https://issues.apache.org/jira/browse/THRIFT-1232
>             Project: Thrift
>          Issue Type: Bug
>          Components: JavaScript - Library
>            Reporter: Pascal Bach
>            Priority: Minor
>              Labels: exception-handling, js
>         Attachments: 0001-Improve-Exception-handling.patch, 
> 1232-Improve-Exception-handling-and-make-error-hierarchy.patch
>
>
> The JavaScript TException is declared as an object with a prototype property 
> assigned to it.
> It should be declared as a constructor function with a prototype. Otherwise 
> exceptions derived from TException using Thrift.inherits are not instances of 
> TException.
> Example:
> function DerivedException() {};
> Thrift.inherits(DerivedException, Thrift.TException);
> var ex = new DerivedException();
> ex instanceof Thrift.TException // => Error as TException is not a function

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