[Webkit-unassigned] [Bug 204054] New: WebAssembly exception names

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=204054

            Bug ID: 204054
           Summary: WebAssembly exception names
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebAssembly
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mail at janmidtgaard.dk

The WebAssembly exceptions (also thrown by the Wasm engine) have name properties
deviating from the other 3 major JS/Wasm engines.

Ideally a WebAssembly.CompileError should have name "CompileError", etc.
Consider:

 let e1 = new WebAssembly.CompileError("a compile error")
 let e2 = new WebAssembly.LinkError("a link error")
 let e3 = new WebAssembly.RuntimeError("a runtime error")
 print(e1.name, e1);
 print(e2.name, e2);
 print(e3.name, e3);

and compare the output across v8, spidermonkey, chakra, and javascriptcore:

$ v8 exceptions.js 
CompileError CompileError: a compile error
LinkError LinkError: a link error
RuntimeError RuntimeError: a runtime error

$ sm exceptions.js 
CompileError CompileError: a compile error
LinkError LinkError: a link error
RuntimeError RuntimeError: a runtime error

$ ch exceptions.js 
CompileError CompileError: a compile error
LinkError LinkError: a link error
RuntimeError RuntimeError: a runtime error

$ jsc exceptions.js 
Error Error: a compile error (evaluating 'new WebAssembly.CompileError("a compile error")')
Error Error: a link error (evaluating 'new WebAssembly.LinkError("a link error")')
Error Error: a runtime error (evaluating 'new WebAssembly.RuntimeError("a runtime error")')

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