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() }) {}
> foo({}); // doesn't throw
then the above throws and so does
foo()
>
> function bar({ +a }){}
> bar({}); // would throw
> ```
>
>
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