Compiler gives no warning if a listed module is not found (e.g. a typo in the module name)

[edwardpeters]

Describe the bug
If you have a module listed in morphir.json, but no actual implementation, then no error is thrown and the build appears to pass.

To Reproduce
Steps to reproduce the behavior:
morphir.json:

{
    "name": "Scratch",
    "sourceDirectory": "src",
    "exposedModules": [
        "ExampleModule"
    ]
}

ExampleModule.elm:

module ScratchWithTypo.ExampleModule exposing (..)

typeErrorTest : Bool -> String
typeErrorTest x = True     

Compiling (with either make or make -f) appears to succeed, though nothing is added to morphir-ir.json).

Expected behavior
Some error or at least very loud warning should be given for the missing file.

Adding to the confusion, some errors are thrown from the referenced file - for instance, mismatched paranthesis in the file still gives an error

Desktop (please complete the following information):

• OS: OSX
• Browser:2.89.0 Unused
• Version :

Additional context
Add any other context about the problem here.