Nullable parameter injection crash

[romanandreyvich]

Describe the bug

Can't inject a nullable parameter to a dependency registered by singleOf/factoryOf. I pass null with parametersOf(null) and it fails with exception: Caused by: org.koin.core.error.DefinitionParameterException: No value found for type

To Reproduce

Here is an example, I have a class:

class Foo(userId: Int?)

Register it via singleOf/factoryOf

val module = {
    factoryOf(::Foo)
}

Trying to resolve:

val foo = get<Foo> { parametersOf(null) }

Got:

Caused by: org.koin.core.error.DefinitionParameterException: No value found for type

Expected behavior An instance of Foo with Foo.userId is null

Koin project used and used version (please complete the following information):

koin: 3.2.0

[arnaudgiuliani]

Is it q feature request for nullable injected param?

[andersu]

We also have some crashes with nullable injected params. It works fine with the old DSL, but crashes with the new DSL. So is it really a feature request or is it a bug? If the new DSL does not support it yet, I would like to request this feature indeed :)

This crashes when passing null: viewModelOf(::HowDoesItWorkViewModel)

This does not crash when passing null: viewModel { (earningPeriodEndDate: String?) -> HowDoesItWorkViewModel(get(), get(), earningPeriodEndDate) }

[arnaudgiuliani]

DSL Constructor doesn't support nullable param for now. We need to investigate more about that.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.