Missing module error in tree-shaked dll modules

[skimi]

Bug report

What is the current behavior?

A module is missing in the dll chunk causing an error:

Uncaught TypeError: Cannot read property 'call' of undefined
    at __webpack_require__ (dll.js:21)
    at Module../test-package/index.js (dll.js:121)
    at __webpack_require__ (dll.js:21)
    at Module../dll.js (dll.js:95)
    at __webpack_require__ (dll.js:21)
    at Object.<anonymous> (index.js:107)
    at __webpack_require__ (index.js:20)
    at Module.<anonymous> (index.js:100)
    at __webpack_require__ (index.js:20)
    at Object.<anonymous> (index.js:91)

A library needs to re-export one of it's module in two steps like constants below to get this bug:

// index.js of 'test-package'
import * as _constants from './constants';
export var constants = _constants;
export { default as someOtherFunction } from './someOtherFunction';

Then if you try to import import { constants } from 'test-package' in your dll. The end chunk will have a reference to the module ./someOtherFunction but it won't actually be in the chunk causing the above error.

This only happens in a DLL

If the current behavior is a bug, please provide the steps to reproduce.

https://github.com/skimi/webpack-dll-bug

What is the expected behavior?

Missing module reference either completely removed because it can totally be tree-shaked or it can't at all and it should be kept in the chunk.

Other relevant information:

I got this error while using the redux-form library that has this kind of export.
Related issue at redux-form redux-form/redux-form#4618