Doesn't look like subpath imports will work for users with default moduleResolution

[jedwards1211]

If I want to publish a package foo and allow people to import bar from 'foo/bar', it looks like that won't work with the way tsconfig-to-dual-package structures the output.

The default moduleResolution setting ignores export maps, so any export map entry for "./bar" won't work. The only way for a package to support this without any TS users running into issues, is to output all CJS and ESM files into the root of the package with different extensions, instead of using separate subdirectories.