[Webkit-unassigned] [Bug 141115] New: new Date(NaN).toJSON() must return null instead of throwing a TypeError

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=141115

            Bug ID: 141115
           Summary: new Date(NaN).toJSON() must return null instead of
                    throwing a TypeError
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: claude.pache at gmail.com

When the toJSON method is applied to an invalid date, it must return null, and not throwing a TypeError.

Note that this behaviour is different from the toISOString method.

For reference, see [ES5.1 Date.prototype.toJSON], steps 2 and 3.

[ES5.1 Date.prototype.toJSON]: http://www.ecma-international.org/ecma-262/5.1/#sec-15.9.5.44

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