How to mixin Underscore plugins in RequireJS?

Question

What is the right way to execute code on Underscore when it gets loaded? I am trying to execute the below code to extend the _ exported namespace automatically when modules

Answer 1

Do you require underscorestring somewhere? Because if it isn't required, it won't be loaded. I managed to get it working with almost exactly the same code you posted:

require.config({
    paths: {
        underscore: [
            '//raw.github.com/documentcloud/underscore/master/underscore-min'
        ,   'lib/underscore'
        ]
    ,   underscorestring: 'https://raw.github.com/epeli/underscore.string/master/dist/underscore.string.min'
    }
,   shim: {
        underscore: { exports: '_' },
        underscorestring: {
            deps: ['underscore'],
            init: function(_) { 
                _.mixin(_.str.exports());
                return _; // guess, this is not needed.
            }
        }
    }
,   exclude: ['underscore']
});

require(['underscore', 'underscorestring'], function(_) {
    console.log( _.chars("i'm a happy string.") );
});