Reproduction link or steps

Opened #817 with a failing test case as an example.

What is expected?

With the folder structure of the following

src
  |- utils
    |- bar.ts

and the option entry: 'src/**/*.ts' and unbundle: true, the output directory should be

dist
  |- utils
    |- bar.ts

What is actually happening?

The output directory is

dist
 |- bar.ts

Any additional comments?

I currently have a workaround where entry: { '*': 'src/**/*.ts'} gives the expected output structure, but it'd be nice if this can be part of the main unbundle functionality.