Hello!
I've updated the strawman proposals for static modules and dynamic module
loaders and would love to get feedback from the es-discuss community.
* Static modules:
http://wiki.ecmascript.org/doku.php?id=strawman:simple_modules
http://wiki.ecmascript.org/doku.php?id=strawman:simple_modules_examples
Briefly, the proposal provides a static module form:
module Widgets { ... }
The declaration binds the module name lexically. Modules declared at the same
scope can be mutually recursive. They can also be loaded from external URL's:
module Even = "http://example.com/even.js";;
module Odd = "http://example.com/odd.js";;
The body of a module contains nothing in scope except for outer module
bindings. Modules are truly lexically scoped, with no global object pollution.
Modules can easily import bindings from other modules, either by dereferencing
the modules that are in scope directly:
module Client { ... Widgets.messageBox("hello!"); ... }
or by importing them explicitly:
module Client {
import Widgets.messageBox;
...
messageBox("hello!");
...
}
Although modules are static entities, they can be dynamically reflected as
objects.
There's plenty more details on the wiki page.
* Dynamic module loaders:
http://wiki.ecmascript.org/doku.php?id=strawman:module_loaders
These provide an API for dynamically loading and evaluating modules, and
creating separate isolated contexts in which modules can be evaluated. You can
create a separate module loader that shares no module instances with the
current module loader; this could be used e.g. by an IDE (such as Bespin) that
wants to run client code without letting the client code affect the running
environment of the IDE itself. You can also share some module instances, to
have finer-grained control over the sharing between module loaders.
There are some API notes on the wiki page. I expect it'll be revised and
refined over time. Feedback welcome!
Thanks,
Dave
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