Simulate the absence of a module

[j-ulrich]

Is it possible to simulate the absence of a module with rewiremock? Meaning: make the require() call throw a MODULE_NOT_FOUND exception?

proxyquire supports this by simply setting the dependency to null in the configuration.

I also tried this using rewiremock like this:

const myModuleWithMocks = rewiremock.proxy( 'myModule.js', {
   'dependency':  null
 } );

I also tried using .with() and .by(). I also tried using a function which throws an exception but nothing makes the require() throw. When setting the dependency to null, then the require() call simply returns null as well.

My use case is that I have an optional dependency and I want to test the fallback code which handles the case that the dependency is not available.