How to import store.on?

First, thanks for this awesome lib..!

I'm using store2 on vue.js without problems, but now I want to import store.on, how to do it?

import Storage from 'store2' // WORKS!

// Uncaught TypeError: Cannot read property '_' of undefined
import StoreOn from 'store2/src/store.on'

So, why not include extensions via "ES6 Destructuring and Module imports"? It could be nice do this:

import Storage, {StoreOn, StoreOverflow, StoreQuota} from 'store2'

Thanks

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