Recursively resolve typescript types

I expect the output of ncc to be runnable without npm dependencies.
However, if I have a type that is included from another library, I need to keep that library as a dependency and the types are not resolved.
So an import is not being resolved and the output of ncc looks like this:

import { Type } from 'library'

As this is already the behavior of the code bundling with Webpack, I would expect this to work with TypeScript, too.

In other words we need a Webpack for typings.

This could e.g. be done with https://www.npmjs.com/package/declaration-bundler-webpack-plugin

The issue names no ncc files or tests; start by tracing how ncc handles TypeScript declarations and how its Webpack bundling behavior is implemented. Review declaration-bundler-webpack-plugin as a possible reference, then define a reproducible case where an imported type is recursively bundled and the generated output has no dependency on that library.