Building bicep parameterfiles with compile-time imported UDFs, exception is thrown

[peter-de-wit]

Bicep version
Bicep CLI version 0.24.24 (5646341)

Describe the bug
When building a bicep parameter file that is referring a compile-time imported UDF, the following compilation error is thrown:
Failed to evaluate parameter "paramname": The template function '_1.getValue' is not expected at this location.

To Reproduce
I've included a project as attachment to reproduce the situation.

build.ps1 --> main.bicepparam.bicep --> throws the error

Additional context
See attachment:
bicep-udt-compiletimeimport-bicepparam-notexpected.zip

[jeskew]

UDFs aren't supported in bicepparam files at the moment. While the compiler blocks function and type imports via the cherry-pick syntax (import { aType, aFunction } from 'mod.bicep'), there's no similar block when using wildcard imports.

We could add a linter to check the use of wildcard import properties and raise a diagnostic when a function is dereferenced. This would at least provide an opportunity to surface a more helpful error message than the Failed to evaluate... message currently being encountered. This could also be addressed by adding support for UDFs in the bicepparam compiler.