ES Modules: suggestions for improvement

David Herman dherman at
Wed Jun 27 11:02:41 PDT 2012

On Jun 27, 2012, at 11:00 AM, Jussi Kalliokoski wrote:

> On Wed, Jun 27, 2012 at 8:43 PM, David Herman <dherman at> wrote:
> I don't see how that's at all related to modules or how modules would have prevented this. 

Because we're talking about static checking of unbound variables within modules. A reference to or assignment to an unbound variable would result in an early error.

> For this, if it's actually that convenient, I'd actually suggest another destructuring pattern, because it might be useful in general as well:
> let * = Math;

This is dynamic scoping. The difference between import * and let * is that the former is statically scoped, and the latter is dynamically scoped.

> What about exported objects then? Are they immutable to clients as well? That would make this unusable for libraries that have a plugin system, such as jQuery.

Of course not. You can export a mutable object if you want to. You can export whatever you want.


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