Aliasing 'react' to 'preact/compat' when migrating from React (typescript)

My project uses rollup+ts. When switching from React to preact I had to do the following in order to make the project compile

tsconfig.json

...
"paths": {
          "react-dom": ["../node_modules/preact/compat"],
          "react": ["../node_modules/preact-compat"],
...

This seems a bit odd to me. Is this how it was intended? I thought preact-compat is deprecated, but if I use preact/compat instead, then there’s some types missing, like JSX.Element and React.DependencyList and many others. I think it’s related to #2222 and #2150.

And the first alias cannot be changed from preact/compat to preact-compat either, otherwise ts complains to that line:

import * as ReactDOM from 'react-dom';

semantic error TS7016: Could not find a declaration file for module 'react-dom'. 'node_modules/preact-compat/dist/preact-compat.js' implicitly has an 'any' type.
  Try `npm i --save-dev @types/preact-compat` if it exists or add a new declaration (.d.ts) file containing `declare module 'react-dom';`

In the end, it all works and it’s maybe not a big deal, but I think this should be documented at the very least.

[AlexIII]

Oh, I think I’m starting to understand. I don’t need to install actual packages, just the types. After installing @types/react-dom I can now remove aliases from tsconfig.json. Still, maybe a word about it in the docs couldn’t hurt… Closing this one.

[AlexIII]

@JoviDeCroock thank you for the answers.