Meteor-Files: ES6 Cannot find module 'meteor:package/ostrio/files'.

I’m having an issue:

How to implement on ES6 project? I’ve already put :

import { FilesCollection } from 'meteor/ostrio:files';

But at the console always showing Cannot find module 'meteor:package/ostrio/files'.

How I can call that class? Should I put typings definitions? Please help.

Thanks,