Mention limitations

[aleclarson]

Incompatible with libraries using the following options in tsconfig.json...

• baseUrl
• paths
• esModuleInterop (if not also enabled in the consuming project)

_{Maybe more?}

[oliverzy]

Yes, just hit the 'paths' issue today. I think it's better to document it

[parkerault]

I'm also unable to use this plugin because our library uses typescript-plugin-css-modules, so if the host application doesn't have it installed the type check fails (it will build fine from the bundle if you don't have a type validation stage in your build toolchain, but tsc --noEmit will fail because for some reason it doesn't treat the imports the same as it would from other node_modules packages). If you are using it to build libraries that you will use in your own host applications with the same build toolchain and configuration it's fine, but I don't think it's the right solution for a library meant for public consumption. It would be nice if these limitations were mentioned in the README, as it would have saved me a couple of hours of troubleshooting.