> Duplication of module dependencies is also tedious and error-prone.

You can combine these with RequireJS as well. Instead of:

  define(['a', 'b', 'c'], function () {
    var a = require('a');
    var b = require('b');
    var c = require('c');
    ...
  });

You can instead just do:

  define(['a', 'b', 'c'], function (a, b, c) {
    ...
  });