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jquerybackbone.jsjspm
Jesper Jensen
Jesper Jensen

Reputation: 905

Backbone from NPM via JSPM

I'm trying to install backbone.marionette from NPM with the JSPM for client dependency resolving. A simple operation with the following command in commandprompt:

jspm install marionette=npm:backbone.marionette

All dependencies - except jQuery is automatically downloaded and installed. But I get a runtime error:

Can't call Deferred of undefined.

I was looking into the code, and i found that the problem was in the backbone source code line 9, 10 and 11

} else if (typeof exports !== 'undefined') {
  var _ = require("underscore");
  factory(root, exports, _);

When running under traceurJS, the factory-method is called from here, and it is clear, that the last argument $, is left out. When I look in the backbone sourcecode on github, the same lines look like this:

} else if (typeof exports !== 'undefined') {
var _ = require('underscore'), $;
try { $ = require('jquery'); } catch(e) {}
factory(root, exports, _, $);

Here the jQuery dependency is added with option (try/catch). I have to add here, that the NPM version is marked with the same version as GitHub - 1.1.2.

Why the difference? It seems as if this has been a problem for some time as of, there is published a few workarounds like adding this in code:

$           = require('jquery');
Backbone    = require('backbone');
Backbone.$  = $

I don't like this, although it works, because its a workaround, and it seems as if it's not existing.

Upvotes: 39

Views: 748

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