KT-11588 Type aliases

Light class generation: do not fail on type aliases
TODO: actual binary representation for type aliases

compiler/frontend.java/src/org/jetbrains/kotlin/load/kotlin/PackagePartClassUtils.kt

@@ -22,10 +22,7 @@ import org.jetbrains.annotations.TestOnly
 import org.jetbrains.kotlin.load.java.JvmAbi
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.psi.KtFile
-import org.jetbrains.kotlin.psi.KtNamedFunction
-import org.jetbrains.kotlin.psi.KtProperty
-import org.jetbrains.kotlin.psi.KtScript
+import org.jetbrains.kotlin.psi.*
 import java.util.*
 
 object PackagePartClassUtils {
@@ -64,7 +61,8 @@ object PackagePartClassUtils {
             file.declarations.any {
                 it is KtProperty ||
                 it is KtNamedFunction ||
-                it is KtScript
+                it is KtScript ||
+                it is KtTypeAlias
             }
 
     @JvmStatic fun getFilePartShortName(fileName: String): String =

compiler/testData/diagnostics/tests/typealias/aliasesOnly.kt

@@ -0,0 +1 @@
+typealias S = String

compiler/testData/diagnostics/tests/typealias/aliasesOnly.txt

@@ -0,0 +1,3 @@
+package
+
+public typealias S = kotlin.String

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -19016,6 +19016,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)
         public static class Typealias extends AbstractDiagnosticsTest {
+            @TestMetadata("aliasesOnly.kt")
+            public void testAliasesOnly() throws Exception {
+                String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/typealias/aliasesOnly.kt");
+                doTest(fileName);
+            }
+
             public void testAllFilesPresentInTypealias() throws Exception {
                 KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/diagnostics/tests/typealias"), Pattern.compile("^(.+)\\.kt$"), true);
             }