@ngdoc error
@name $injector:nomod
@fullName Module Unavailable
@description

This error occurs when you declare a dependency on a module that isn't defined anywhere or hasn't
been loaded in the current browser context.

When you receive this error, check that the name of the module in question is correct and that the
file in which this module is defined has been loaded (either via `<script>` tag, loader like
require.js, or testing harness like karma).

A less common reason for this error is trying to "re-open" a module that has not yet been defined.

To define a new module, call {@link angular.module angular.module} with a name
and an array of dependent modules, like so:

```js
// When defining a module with no module dependencies,
// the array of dependencies should be defined and empty.
var myApp = angular.module('myApp', []);
```

To retrieve a reference to the same module for further configuration, call
`angular.module` without the array argument.

```js
var myApp = angular.module('myApp');
```

Calling `angular.module` without the array of dependencies when the module has not yet been defined
causes this error to be thrown. To fix it, define your module with a name and an empty array, as in
the first example above.