[FIR JS] KT-57822: Don't report the diagnostic for non-qualifiers

^KT-57822 Fixed

compiler/fir/checkers/checkers.js/src/org/jetbrains/kotlin/fir/analysis/js/checkers/expression/FirJsNativeRttiChecker.kt

@@ -27,6 +27,10 @@ object FirJsNativeRttiChecker : FirBasicExpressionChecker() {
     private fun checkGetClassCall(expression: FirGetClassCall, context: CheckerContext, reporter: DiagnosticReporter) {
         val declarationToCheck = expression.argument.typeRef.toRegularClassSymbol(context.session) ?: return
 
+        if (expression.arguments.firstOrNull() !is FirResolvedQualifier) {
+            return
+        }
+
         if (declarationToCheck.isNativeInterface(context)) {
             reporter.reportOn(expression.source, FirJsErrors.EXTERNAL_INTERFACE_AS_CLASS_LITERAL, context)
         }

compiler/testData/diagnostics/testsWithJsStdLib/externalInterfaceClassLiteral.kt

@@ -0,0 +1,10 @@
+// FIR_IDENTICAL
+// ISSUE: KT-57822
+
+external interface Foo
+
+fun bar() {
+    foo()::class.simpleName
+}
+
+external fun foo(): Foo

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticsTestWithJsStdLibGenerated.java

@@ -30,6 +30,12 @@ public class DiagnosticsTestWithJsStdLibGenerated extends AbstractDiagnosticsTes
         runTest("compiler/testData/diagnostics/testsWithJsStdLib/dynamicUnresolved.kt");
     }
 
+    @Test
+    @TestMetadata("externalInterfaceClassLiteral.kt")
+    public void testExternalInterfaceClassLiteral() throws Exception {
+        runTest("compiler/testData/diagnostics/testsWithJsStdLib/externalInterfaceClassLiteral.kt");
+    }
+
     @Test
     @TestMetadata("funConstructorCallJS.kt")
     public void testFunConstructorCallJS() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsOldFrontendDiagnosticsTestGenerated.java

@@ -31,6 +31,12 @@ public class FirPsiJsOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiJ
         runTest("compiler/testData/diagnostics/testsWithJsStdLib/dynamicUnresolved.kt");
     }
 
+    @Test
+    @TestMetadata("externalInterfaceClassLiteral.kt")
+    public void testExternalInterfaceClassLiteral() throws Exception {
+        runTest("compiler/testData/diagnostics/testsWithJsStdLib/externalInterfaceClassLiteral.kt");
+    }
+
     @Test
     @TestMetadata("funConstructorCallJS.kt")
     public void testFunConstructorCallJS() throws Exception {