KT-13689 Typealias constructor usage counts as original type usage for optimize imports

#KT-13689 Fixed
(cherry picked from commit bde7e2b)

core/descriptors/src/org/jetbrains/kotlin/resolve/DescriptorUtils.kt

@@ -21,6 +21,7 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.ClassKind.*
 import org.jetbrains.kotlin.descriptors.annotations.Annotated
 import org.jetbrains.kotlin.descriptors.annotations.KotlinRetention
+import org.jetbrains.kotlin.descriptors.impl.TypeAliasConstructorDescriptor
 import org.jetbrains.kotlin.incremental.components.LookupLocation
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
@@ -40,6 +41,7 @@ fun ClassDescriptor.getClassObjectReferenceTarget(): ClassDescriptor = companion
 
 fun DeclarationDescriptor.getImportableDescriptor(): DeclarationDescriptor {
     return when {
+        this is TypeAliasConstructorDescriptor -> typeAliasDescriptor
         this is ConstructorDescriptor -> containingDeclaration
         this is PropertyAccessorDescriptor -> correspondingProperty
         else -> this

idea/src/org/jetbrains/kotlin/idea/intentions/ConvertAssertToIfWithThrowIntention.kt

@@ -114,7 +114,7 @@ class ConvertAssertToIfWithThrowIntention : SelfTargetingIntention<KtCallExpress
     }
 
     private fun replaceWithIfThenThrowExpression(original: KtCallExpression): KtIfExpression {
-        val replacement = KtPsiFactory(original).createExpression("if (!true) { throw java.lang.AssertionError(\"\") }") as KtIfExpression
+        val replacement = KtPsiFactory(original).createExpression("if (!true) { throw kotlin.AssertionError(\"\") }") as KtIfExpression
         val parent = original.parent
         return if (parent is KtDotQualifiedExpression)
             parent.replaced(replacement)

idea/testData/editor/optimizeImports/TypeAliasUsage.kt

@@ -0,0 +1,5 @@
+import kotlin.Any
+
+fun foo(): Any  {
+    throw UnsupportedOperationException()
+}

idea/testData/editor/optimizeImports/TypeAliasUsage.kt.after

@@ -0,0 +1,3 @@
+fun foo(): Any  {
+    throw UnsupportedOperationException()
+}

idea/tests/org/jetbrains/kotlin/idea/imports/OptimizeImportsTestGenerated.java

@@ -245,6 +245,12 @@ public class OptimizeImportsTestGenerated extends AbstractOptimizeImportsTest {
         doTest(fileName);
     }
 
+    @TestMetadata("TypeAliasUsage.kt")
+    public void testTypeAliasUsage() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/optimizeImports/TypeAliasUsage.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("UnusedImports.kt")
     public void testUnusedImports() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("idea/testData/editor/optimizeImports/UnusedImports.kt");