请问怎么调用requirejs打包后的模块？

Question

我想把一些代码打包成组件到处使用，大概是这样的：

m1.js

define([
    "backbone"
], function (
        backbone
        ) {
    return Backbone.View.extend({
        render: function () {
            var This = this;
            this.$el.html(this.template(this.model.attributes));
            return this;
        }
    });
});

m2.js

define([
    "backbone","m1"
], function (
        backbone,m1
        ) {
    return Backbone.View.extend({
        render: function () {
            var This = this;
            this.$el.html(new m1().render().$el);
            return this;
        }
    });
});

然后把我这两个文件打成一个包，pack.js，我希望在别的文件中调用它，比如：

m3.js

define([
    "backbone","pack"
], function (
        backbone,pack
        ) {
    return Backbone.View.extend({
        render: function () {
            var This = this;
            this.$el.html(new pack().render().$el);
            return this;
        }
    });
});

结果发现pack没有加载成功，是空对象，请问有办法解决吗？