internal val KotlinType.ktNullability: KtTypeNullability
    get() = when {
        this.isNullabilityFlexible() -> KtTypeNullability.UNKNOWN
        this.isMarkedNullable -> KtTypeNullability.NULLABLE
        else -> KtTypeNullability.NON_NULLABLE
    }

internal val DeclarationDescriptorWithVisibility.ktVisibility: Visibility
    get() = when (visibility) {
        DescriptorVisibilities.PUBLIC -> Visibilities.Public

    }

    private fun KtAnalysisSession.getSymbolsFromPackageScope(fqName: FqName, contextElement: KtElement): Collection<KtDeclarationSymbol> {
        //ensure file context is provided for "non-physical" code as well
        val contextDeclarationOrSelf = PsiTreeUtil.getContextOfType(contextElement, KtDeclaration::class.java, false)
            ?: contextElement

            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.NON_PRIVATE_CONSTRUCTOR_IN_ENUM) { firDiagnostic ->
        NonPrivateConstructorInEnumImpl(
            firDiagnostic as KtPsiDiagnostic,
            token,
        )
    }
    add(FirErrors.NON_PRIVATE_OR_PROTECTED_CONSTRUCTOR_IN_SEALED) { firDiagnostic ->
        NonPrivateOrProtectedConstructorInSealedImpl(

import org.jetbrains.kotlin.fir.symbols.impl.FirClassifierSymbol
import org.jetbrains.kotlin.fir.symbols.impl.FirConstructorSymbol
import org.jetbrains.kotlin.name.Name

/**
 * [FirNonStaticMembersScope] includes non-static callables and inner classes.
 *
 * Inner classes are included because they are accessible from a value of the outer class. For example:
 *
 * ```
 * class Outer {
 *     inner class Inner
 * }
 *

    private enum class DeclaredMemberScopeKind {
        NON_STATIC,

        STATIC,

        /**
         * A scope containing both non-static and static members. A smart combined scope (as opposed to a naive combination of [KtScope]s
         * with [getCompositeScope]) avoids duplicate inner classes, as they are contained in non-static and static scopes.
         *

class KtFe10ExpressionTypeProvider(
    override val analysisSession: KtFe10AnalysisSession
) : KtExpressionTypeProvider(), Fe10KtAnalysisSessionComponent {
    private companion object {
        val NON_EXPRESSION_CONTAINERS = arrayOf(
            KtImportDirective::class.java,
            KtTypeReference::class.java,
            KtPackageDirective::class.java,
            KtLabelReferenceExpression::class.java
        )

            is KtDotQualifiedExpression -> qualifiedExpressionsWithSelf
            else -> error("Unexpected ${this::class}")
        }

    /**
     * Note: The resulting sequence does not contain non-qualified types!
     *
     * For type `A.B.C.D` it will return sequence of [`A.B.C.D`, `A.B.C`, `A.B`] (**without** `A`).
     */
    private val KtUserType.qualifiedTypesWithSelf: Sequence<KtUserType>

- [`KT-59417`](https://youtrack.jetbrains.com/issue/KT-59417) K2: Missing CALL_FROM_UMD_MUST_BE_JS_MODULE_AND_JS_NON_MODULE
- [`KT-59381`](https://youtrack.jetbrains.com/issue/KT-59381) K2: Missing CALL_TO_JS_NON_MODULE_WITH_MODULE_SYSTEM
- [`KT-59384`](https://youtrack.jetbrains.com/issue/KT-59384) K2: Missing DYNAMIC_NOT_ALLOWED

                AnalysisSessionMode.Dependent -> error("Unsupported AnalysisSessionMode.Dependent for fe10")
            }

            else -> {
                error("Unsupported non-source module for fe10")
            }
        }
    }

    override fun supportMode(data: AnalysisApiTestConfiguratorFactoryData): Boolean {
        return when {
            data.frontend != FrontendKind.Fe10 -> false

        // When you call a method from Java with type arguments, in FIR they are currently represented as flexible types.
        // TODO Consider handling other non-ConeLookupTagBasedType types here (see KT-66418)
        val type = getDeclaredType()?.lowerBoundIfFlexible() as? ConeLookupTagBasedType

        return type?.toTargetSymbol(session, symbolBuilder) ?: run {