draft of strawman:simple_modules

David Herman dherman at mozilla.com
Tue Sep 28 09:37:09 PDT 2010


I've recently updated and clarified the draft strawman for simple modules:

    http://wiki.ecmascript.org/doku.php?id=strawman:simple_modules

One of the key changes is to the initial environment of modules, addressing the issue of module name capture pointed out a while back by Jasvir Nagra and Ihab Awad. The spec now distinguishes externally-loaded modules from internal modules. Internal modules simply extend the existing environment, like any other scoping construct. But to prevent external modules from being sensitive to *all* modules in scope, they are given an initial environment with only the *local* modules (i.e., the sibling modules declared in the same parent module as the module-load declaration in question). There are provisions for locally rebinding a module so that it can be made explicitly visible to an externally-loaded module.

The strawman now provides a more detailed semantics for the core system. Allen Wirfs-Brock made the good suggestion that we create a rationale document. I will be working on that, and I'll send announcement when it's ready. The module loaders API is not ready yet either, so that'll be another future announcement, too.

Dave



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