[Webkit-unassigned] [Bug 111889] New: Web Inspector: Error handling for ScriptPreprocessor

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=111889

           Summary: Web Inspector: Error handling for ScriptPreprocessor
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: johnjbarton at chromium.org
                CC: keishi at webkit.org, pmuellr at yahoo.com,
                    pfeldman at chromium.org, yurys at chromium.org,
                    apavlov at chromium.org, loislo at chromium.org,
                    vsevik at chromium.org,
                    web-inspector-bugs at googlegroups.com


In using the scriptpreprocessor introduced in Bug 80992 and Bug 104384, I found I could succeed with trivial preprocessors but not real JS to JS compilers.

The problem is two-fold: 
1) the environment of the preprocessor is not like any web page: the compiler source must be inside of a function body, not a global scope and the compiler cannot reference console or window.
2) Compile and run time errors are not reported, but result in silently ignoring the preprocessor.

Discovering the first set of issues without the second is pretty much impossible.

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