C. Scott Ananian ecmascript at
Wed Jun 11 08:37:53 PDT 2014

On Wed, Jun 11, 2014 at 11:05 AM, Boris Zbarsky <bzbarsky at> wrote:
> On 6/11/14, 10:58 AM, Rick Waldron wrote:
>> function isConstructor(C) {
>>    try {
>>      new C();
> This will fail for constructors that require actual arguments, right?
> For example, this will fail if C === window.Worker in a browser.

It will also fail for the uses of `IsConstructor` in the promise spec,
as `Promise` constructors throw `TypeError` unless they are passed a
callable `resolve` argument (IIRC).

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