Re: [gwt-contrib] I'm enhancing GWT to provide Java stack traces for clientside exceptions in production

On Wed, Jul 17, 2013 at 4:56 PM, Alex Epshteyn <alexander.epshteyn@gmail.com> wrote:

I would like to announce that I have finally solved what I always thought to be GWT's greatest weakness: its lack of debugging information for client-side exceptions in production.  

With my patch, your deployed app will be able to report stack traces like this:

com.google.gwt.core.client.JavaScriptException: (TypeError) : a is null

com.google.gwt.dom.client.DOMImplMozilla.$getBodyOffsetLeft(DOMImplMozilla.java:145) 

com.google.gwt.user.client.ui.PopupPanel.$setPopupPosition(Document.java:1287)

com.google.gwt.user.client.ui.PopupPanel.setPopupPosition(PopupPanel.java:884)

com.google.gwt.user.client.ui.PopupPanel.PopupPanel(PopupPanel.java:453) 

com.typeracer.commons.client.widgets.EnhancedPopup.EnhancedPopup(EnhancedPopup.java:32)

com.typeracer.commons.client.widgets.PopupWithIcon.PopupWithIcon(PopupWithFocusableTextBox.java:28) 

com.typeracer.main.client.controller.TyperacerUncaughtExceptionHandler$1.execute(TyperacerUncaughtExceptionHandler.java:55) 

com.google.gwt.core.client.impl.SchedulerImpl.runScheduledTasks(SchedulerImpl.java:50) 

etc... :-)

instead of the current state of affairs that looks like this:

lineNumber: 3190 columnNumber: 15354: a is null; (TypeError) fileName:  http://localhost:8088/9C4DC2D905BEA407601C92C56B43E3B8.cache.html 

stack: @http://localhost:8088/9C4DC2D905BEA407601C92C56B43E3B8.cache.html:2422 

Rub@http://localhost:8088/9C4DC2D905BEA407601C92C56B43E3B8.cache.html:2423 

dSb@http://localhost:8088/9C4DC2D905BEA407601C92C56B43E3B8.cache.html:3190 

tA@http://localhost:8088/9C4DC2D905BEA407601C92C56B43E3B8.cache.html:2810 

Xmb@http://localhost:8088/9C4DC2D905BEA407601C92C56B43E3B8.cache.html:2289 

etc... :-(

So, something like this has been used at least internally for quite a long time -- what exactly did you have to change in StackTraceDeobfuscator?

--
John A. Tamplin

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