Accept a module as response file to more dynamic responses

[uhtred]

Fixed old tests;

What do you think?

[lourenco]

👍

[mrak]

For what it's worth, the example you have in the tests could be accomplished using Dynamic Token Interpolation

Keep in mind that dynamic require statements can be a memory leak and potentially fill the heap.

The idea is that you want to script a response? This project is meant to be a fixture-based server. This sort of thing may be better served with a more fully scriptable server product

[mrak]

If folks really really desire this feature, we should think about a first-class way to incorporate it. In this PR's current state, users who have a .js file for their response body will have it executed instead of returned as a Content-Type: application/javascript".

Maybe something more along the lines of

- request:
    ...
  script: path/to/module.js

At that point though, the line between a stub server and a full express app with specific routes becomes very thin.