ES6 Imports are not working as described

When import Base64 Module ES6 Style:

import Base64 from 'crypto-js/enc-base64';

I got following error:

The requested module '../node_modules/crypto-js/enc-base64.js' does not provide an export named 'default'

and if I'm using this syntax:

import { Base64 } from 'crypto-js/enc-base64';

It says:

The requested module '../node_modules/crypto-js/enc-base64.js' does not provide an export named 'Base64'

I've also tried import * as Base64 from 'crypto-js/enc-base64' but with no luck:

TypeError: Cannot read property 'CryptoJS' of undefined

What I am doing wrong? I need the enc-utf8 and enc-base64 modules in my code.

btw: importing full Library is also not working, with similar errors :(