[v4] classnames presents in Textarea component

[izorg]

• This is not a v0.x issue.
• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior 🤔

Success webpack build

Current Behavior 😯

ERROR in ../node_modules/@material-ui/core/esm/InputBase/Textarea.js
Module not found: Error: Can't resolve 'classnames' in '../node_modules/@material-ui/core/esm/InputBase'
 @ ../node_modules/@material-ui/core/esm/InputBase/Textarea.js 10:0-36 186:19-29 194:19-29 203:19-29
 @ ../node_modules/@material-ui/core/esm/InputBase/InputBase.js
 @ ../node_modules/@material-ui/core/esm/InputBase/index.js
 @ ../node_modules/@material-ui/core/esm/TablePagination/TablePagination.js
 @ ../node_modules/@material-ui/core/esm/TablePagination/index.js
 @ ../node_modules/@material-ui/core/esm/index.js

Steps to Reproduce 🕹

Link:

1. https://unpkg.com/@material-ui/core@4.0.0-alpha.0/esm/InputBase/Textarea.js
2. https://unpkg.com/@material-ui/core@4.0.0-alpha.0/es/InputBase/Textarea.js
3. https://unpkg.com/@material-ui/core@4.0.0-alpha.0/InputBase/Textarea.js
4. Try build with webpack

Context 🔦

Your Environment 🌎

Tech	Version
Material-UI	v4.0.0-alpha.0

[oliviertassinari]

Fixed in #14506

[izorg]

Sorry, thought it was included in v4.0.0-alpha.0. Will wait for next release

[oliviertassinari]

You can install classnames to workaround the problem. Next release is scheduled this weekend. We can cut one earlier if needed.