error TS1206: Decorators are not valid here?

Hi,

What's the problem here? I can't see it.

``` javascript
@Provide(Log)
function getKarmaLoggerInstance() {
    return logger.create('preprocessor-x');
}
```

This produces the following compiler error:

```
error TS1206: Decorators are not valid here.
```

My only guess is that it's on a function, but aren't decorators supposed to be applicable to functions?
