[Bug 22522] New: WebIDL, error handling, and promises

https://www.w3.org/Bugs/Public/show_bug.cgi?id=22522

            Bug ID: 22522
           Summary: WebIDL, error handling, and promises
    Classification: Unclassified
           Product: WebAppsWG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebIDL
          Assignee: cam@mcc.id.au
          Reporter: w3c@marcosc.com
        QA Contact: public-webapps-bugzilla@w3.org
                CC: mike@w3.org, public-script-coord@w3.org

When using a method that vends a promise, it's not clear to me what should
happen when WebIDL says to throw a TypeError.

The WebIDL spec should include something like: "If return type is Promise, and
an exception has been thrown, instead return a rejected promise with that
exception." 

See email thread:
http://lists.w3.org/Archives/Public/public-script-coord/2013AprJun/0772.html

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