On Aug 9, 2013, at 5:37 PM, Allen Wirfs-Brock wrote:
>
> On Aug 9, 2013, at 4:21 PM, Brandon Benvie wrote:
>
>> On 8/9/2013 4:03 PM, Allen Wirfs-Brock wrote:
>>> const MUST = () => {throw TypeError("Missing required parameter"};
>>>
>>> function foo (a=MUST(), b, c) {...}
>>
>> But that doesn't work for:
>>
>> ```js
>> function foo({ a } = { a: MUST() }){}
>
> this would expressed as:
> function foo( {a=MUST() }) {}
and if we make U+2639 a special token that evaluated to throw TypeError we
could say
function foo( {a=☹ }) {}
;-)
Allen
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