- `env` is the same thing as `define` with `JSON.stringify`.

- Currently there is no difference between emitting type definitions with `cjs` or `esm` format, the only difference is the file extension. So we emit the type definitions with a `cjs` format to preserve the previous `.d.ts` extension as opposed to the new `.d.mts` extension.

- The conditional import of the `React` namespace seems to create a lot of side effects, so for now we'll de-duplicate the `React` namespace imports by funneling them through `src/utils/react.ts`.

- This was mainly done to stay consistent with other Redux repos.