Build fails when jquery.cookie is added to app.js

[nmk]

I want to use jquery.cookie in my ember-tools managed project.

I added require("../vendor/jquery.cookie") to app.js and builds started failing with the following message (/path/to/project is here as an example, the real path is in fact correct):

Error: Cannot find module 'jquery' from '/path/to/project/vendor'

/usr/local/lib/node_modules/ember-tools/src/commands/build.js:102
    if (error && !env.watch) throw new Error(error);
                               ^
Error: Error: Command failed: Error: Cannot find module 'jquery' from '/path/to/project/vendor'

If I remove the require("../vendor/jquery.cookie") from app.js, the build works as expected.

Any idea what might be wrong?

Tanks a bunch in advance!