[K/JS] Generate tests for K2 + ES-classes compilation

js/js.translator/testData/box/closure/closureThisAndReceiver.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND_K2: JS_IR
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // EXPECTED_REACHABLE_NODES: 1292
 package foo
 

js/js.translator/testData/box/export/vararg.kt

@@ -1,5 +1,5 @@
 // IGNORE_BACKEND: JS
-// IGNORE_BACKEND_K2: JS_IR
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // EXPECTED_REACHABLE_NODES: 1270
 // SKIP_MINIFICATION
 // RUN_PLAIN_BOX_FUNCTION

js/js.translator/testData/box/expression/when/exhaustiveCheckException.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND_K2: JS_IR
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // EXPECTED_REACHABLE_NODES: 1323
 fun <T> checkThrown(x: T, block: (T) -> Any?): Unit? {
     return try {

js/js.translator/testData/box/jsAstOptimizations/deadCodeElimination.kt

@@ -1,4 +1,4 @@
-// IGNORE_BACKEND_K2: JS_IR
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // FIR works fine, however it generates another names for the temporary variables, therefore ignore it
 
 fun demo(f: () -> String) = f()

js/js.translator/testData/box/native/passExtLambdaToNative.kt

@@ -1,6 +1,5 @@
-// IGNORE_BACKEND_K1: JS_IR
-// IGNORE_BACKEND_K2: JS_IR
-// IGNORE_BACKEND: JS_IR_ES6
+// IGNORE_BACKEND_K1: JS_IR, JS_IR_ES6
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // TODO: Unmute when extension functions are supported in external declarations.
 // IGNORE_BACKEND: JS
 // IGNORE_BACKEND_K1: WASM

js/js.translator/testData/box/native/passMemberOrExtToNative.kt

@@ -1,6 +1,5 @@
-// IGNORE_BACKEND_K1: JS_IR
-// IGNORE_BACKEND_K2: JS_IR
-// IGNORE_BACKEND: JS_IR_ES6
+// IGNORE_BACKEND_K1: JS_IR, JS_IR_ES6
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // TODO: Unmute when extension functions are supported in external declarations.
 // IGNORE_BACKEND: JS
 // IGNORE_BACKEND: WASM

js/js.translator/testData/box/native/vararg.kt

@@ -1,5 +1,5 @@
 // IGNORE_BACKEND: WASM
-// IGNORE_BACKEND_K2: JS_IR
+// IGNORE_BACKEND_K2: JS_IR, JS_IR_ES6
 // EXPECTED_REACHABLE_NODES: 1314
 package foo