> I'm all for using Reflect, but looking at the API as listed on MDN, the 
> harmony-reflect github, or the spec, i don't see an obvious way of getting 
> the parameters.


If I understand you correctly (and this is not about parsing the parameter 
definitions) then how about the following solution?

```js
function foo(…args) {
    let [a, b = 2] = args;
    return args;
}
```

Original code:

```js
function foo( a, b = 2 ) {
    return arguments;
}
```

-- 
Dr. Axel Rauschmayer
[email protected]
rauschma.de

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