can't read data from a FScollection?

I subscribe like this:
```
const handle = Meteor.subscribe('docs');
```
but it doesn't work.

if I try to find some document it give me an error
```
docs: Meteor.FSCollection('docs').find(),
```

this is the error:
```
ExceptionsManager.js:71 Unhandled JS Exception: (0 , _Collection2.default) is not a function
```