Online build not working with decorators

I wrote a script which use decorators (ItemPicker), and it works fine in android playground; it also compiles fine to .apk and installs properly; app starts... but it immediately stops, complaining about not being able to find tabris-decorators module.

I have these imports at the beginning of my script:

```
const {Button, TextView, contentView, Stack, TextInput, AlertDialog, NavigationView, Page, Action, drawer, Composite, CollectionView, ScrollView, Row} = require('tabris');
const {ItemPicker, List} = require('tabris-decorators');

```

As I said, it works fine in playground.
I tried several combinations/variants of package.json , with no success.