Types cannot be imported when packaged

[rtman]

We're trying to make our typechain types reuseable by packaging them up as a private npm package. However this seems to cause issues like the following when in use in nextjs.

./node_modules/@scopeName/packageName/index.ts
Module parse failed: Unexpected token (6:12)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
| 
| /* eslint-disable */
> import type * as openzeppelin from "./@openzeppelin";
| import type * as uniswap from "./@uniswap";
| import type * as contracts from "./contracts";

Here's the package.json for the package:

{"name": "@scopeName/packageName", "version": "1.0.0-88d8202", "main": "index.ts"}

The root of the package is the output dir of typechain, containing all the types as well as the copied artifacts dir from hardhat.

I've seen a few related issues to this but no resolution yet #609 (comment) #278 (comment) , would be great to get some guidance here or a fix.

We're using "@typechain/ethers-v5": "^10.0.0",