[JS IR] Support per-file mode and ES modules

js/js.translator/testData/box/esModules/inline/inlinedObjectLiteralIsCheck.kt

@@ -0,0 +1,35 @@
+// DONT_TARGET_EXACT_BACKEND: JS
+// ES_MODULES
+
+// FILE: main.kt
+interface I {
+    fun ok(): String
+}
+
+inline fun ok(): I {
+    return object : I {
+        override fun ok() = "OK"
+    }
+}
+
+@JsName("convolutedOk")
+@JsExport
+inline fun convolutedOk(): I {
+    val fail = object : I {
+        override fun ok() = "fail"
+    }.ok()
+
+    return ok()
+}
+
+@JsExport
+fun testOk(ok: Any): String {
+    if (ok !is I) return "fail"
+    return ok.ok()
+}
+
+// FILE: entry.mjs
+// ENTRY_ES_MODULE
+import { convolutedOk, testOk } from "./JS_TESTS/index.js";
+
+console.assert(testOk(convolutedOk()) == "OK");