Add test case to detect name clash in stdlib-js

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/BoxJsTestGenerated.java

@@ -1809,6 +1809,11 @@ public class BoxJsTestGenerated extends AbstractBoxJsTest {
                 runTest("js/js.translator/testData/box/expression/cast/castToNullable.kt");
             }
 
+            @TestMetadata("checkThrowCCE.kt")
+            public void testCheckThrowCCE() throws Exception {
+                runTest("js/js.translator/testData/box/expression/cast/checkThrowCCE.kt");
+            }
+
             @TestMetadata("explicitUpcast.kt")
             public void testExplicitUpcast() throws Exception {
                 runTest("js/js.translator/testData/box/expression/cast/explicitUpcast.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/IrBoxJsTestGenerated.java

@@ -1809,6 +1809,11 @@ public class IrBoxJsTestGenerated extends AbstractIrBoxJsTest {
                 runTest("js/js.translator/testData/box/expression/cast/castToNullable.kt");
             }
 
+            @TestMetadata("checkThrowCCE.kt")
+            public void testCheckThrowCCE() throws Exception {
+                runTest("js/js.translator/testData/box/expression/cast/checkThrowCCE.kt");
+            }
+
             @TestMetadata("explicitUpcast.kt")
             public void testExplicitUpcast() throws Exception {
                 runTest("js/js.translator/testData/box/expression/cast/explicitUpcast.kt");

js/js.translator/testData/box/expression/cast/checkThrowCCE.kt

@@ -0,0 +1,16 @@
+// IGNORE_BACKEND: JS_IR
+// EXPECTED_REACHABLE_NODES: 1094
+package foo
+
+import kotlin.reflect.*
+
+fun box(): String {
+    try {
+        "fail".unsafeCast<KClass<*>>().js
+        return "fail try"
+    } catch (cce: ClassCastException) {
+        return "OK"
+    }
+
+    return "fail common"
+}