rmwc: Missing TypeScript definitions for dependencies

• What RMWC Version are you using [major.minor.patch]: 6.0.12

• Name your build system [Webpack, Rollup…]: Webpack

• Describe the bug with as much detail as possible:

This is a weird one. For some reason, I am getting a couple of errors related to third-party type definitions:

ERROR in [at-loader] ./node_modules/@rmwc/base/dist/utils/data-table-context.d.ts:2:23 
    TS2688: Cannot find type definition file for '@emotion/core'.

ERROR in [at-loader] ./node_modules/@rmwc/base/dist/foundation-component.d.ts:2:23 
    TS2688: Cannot find type definition file for '@emotion/core'.

ERROR in [at-loader] ./node_modules/@rmwc/base/dist/index.d.ts:2:39 
    TS7016: Could not find a declaration file for module 'classnames'. '/home/dawsonc623/projects/elyctech/sword-of/packages/sword-of-editor/node_modules/classnames/index.js' implicitly has an 'any' type.
  Try `npm install @types/classnames` if it exists or add a new declaration (.d.ts) file containing `declare module 'classnames';`

This is the first time I have seen a type issue come up with third-party types, so I am kind of at a loss for how to help on this one. This is occurring on my Sword Of project again: https://github.com/elyctech/sword-of/tree/problematic-code

If you need to get the project running:

git clone https://github.com/elyctech/sword-of -b problematic-code
cd sword-of/packages/sword-of-engine
yarn
yarn build
yarn link
cd ../sword-of-editor
yarn
yarn link sword-of-engine
yarn start-dev

webpack-dev-server will run on http://localhost:8080 (technically http://0.0.0.0:8080, but localhost is the easiest way to get to it).

Note: There were a couple of unrelated build issues that for whatever reason did not present themselves until I did a fresh pull of the repository. Sorry if you tried to look at this branch before and could not get it running. I tested these steps, so I know they work from a fresh installation.

• What happened, and what was supposed to happen:

The build failed with the above errors. It should have succeeded. I am not sure why it failed though, so I cannot provide much more insight. I will keep digging and see what I can find on my end.