Material-ui: Core module doesn't exist

[Primerz]

Core module doesn't exist therefore I can't access "import withMobileDialog from '@material-ui/core/withMobileDialog';

Expected Behavior 🤔

"import withMobileDialog from "material-ui/core/withMobileDialog";

Current Behavior 😯

"import withMobileDialog from "material-ui/core/withMobileDialog";"
core doesn't exist as a folder, therefore I am stuck with it

Steps to Reproduce 🕹

I must import components as following "import CommunicationVPNKey from "material-ui/svg-icons/communication/vpn-key";" and the core folder doesn't exist, I have the last version of material UI.

[TrySound]

It's not a folder in package it's scoped package @material-ui/core.

[TrySound]

https://www.npmjs.com/package/@material-ui/core