[Webkit-unassigned] [Bug 157041] New: The error message for for-of loops without Symbol.iterator is awful.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157041

            Bug ID: 157041
           Summary: The error message for for-of loops without
                    Symbol.iterator is awful.
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: keith_miller at apple.com

The error message is possibly one of the worst I have ever seen...

>>> for (a of {}) {}
Exception: TypeError: a of {} is not a function. (In 'a of {}', 'a of {}' is undefined)

I'm not even remotely sure how anyone would be able to debug this without tears.

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