The CommonJS AMD proposal defines an elegant, simple API for declaring modules that can be used with synchronous or asynchronous script-tag based loading in the browser. RequireJS already implements this API, and Dojo will soon have full support as well. The API for defining modules is as simple as:
define(, , );
This simple API can be used in a variety of different ways for different situations.
Here we’ll deal with the actual module format, the mechanism of specifying dependencies and exporting or returning functions from the module that can be used by the users. This does not deal with the normalization of the actual APIs of the underlying system, although you might want to take a look at promised-io if you would like normalization of IO interaction across the browser, Node, and Rhino/Narwhal.
Nodules is a module loader for Node that provides a powerful set of features for application development and distribution. Nodules was written to solve the two major missing pieces of functionality I needed for efficient application development: flexible dependency resolution and module reloading. Nodules runs on top of Node’s simple base module loader, and nicely compliments the base loader with additional functionality. Furthermore, it provides this functionality using idiomatic asynchronous techniques, a smart package layout, and powerful module reloading.