Import of 'nothing' from 'lit' creates error in rollup build

[jannikkerczynski]

Hey,

In the mwc-select-base the import of 'nothing' like this

import { html, nothing } from 'lit';

creates a error in the rollup build:

[!] Error: 'nothing' is not exported by node_modules/lit/index.js, imported by node_modules/@material/mwc-select/mwc-select-base.js https://rollupjs.org/guide/en/#error-name-is-not-exported-by-module node_modules/@material/mwc-select/mwc-select-base.js (20:15) 18: import { lineRipple } from '@material/mwc-line-ripple'; 19: import MDCSelectFoundation from '@material/select/foundation'; 20: import { html, nothing } from 'lit'; ^ 21: import { eventOptions, property, query, state } from 'lit/decorators.js'; 22: import { classMap } from 'lit/directives/class-map.js'; Error: 'nothing' is not exported by node_modules/lit/index.js, imported by node_modules/@material/mwc-select/mwc-select-base.js

https://github.com/material-components/material-web/blob/4f1c42271ddce379e5fdb742810718a622f348ef/packages/select/mwc-select-base.ts#L29