[JS IR BE] Move IrSerializer from native to JS

* Fix issues

js/js.tests/test/org/jetbrains/kotlin/generators/tests/GenerateIrRuntime.kt

@@ -15,6 +15,7 @@ import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.ir.backend.js.compile
 import org.jetbrains.kotlin.js.test.JsIrTestRuntime
 import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.test.KotlinTestUtils
 import java.io.File
 
 fun buildConfiguration(environment: KotlinCoreEnvironment): CompilerConfiguration {
@@ -38,6 +39,8 @@ fun buildConfiguration(environment: KotlinCoreEnvironment): CompilerConfiguratio
 
 private val stdKlibFile = File("js/js.translator/testData/out/klibs/stdlib.klib")
 
+private val resultJs = "js/js.translator/testData/out/klibs/result.js"
+
 fun main() {
 
     val environment = KotlinCoreEnvironment.createForTests(Disposable { }, CompilerConfiguration(), EnvironmentConfigFiles.JS_CONFIG_FILES)
@@ -53,7 +56,7 @@ fun main() {
 
     val result = compile(
         environment.project,
-        JsIrTestRuntime.FULL.sources.map(::createPsiFile),
+        (JsIrTestRuntime.FULL.sources).map(::createPsiFile),
         buildConfiguration(environment),
         null,
         true,
@@ -61,5 +64,7 @@ fun main() {
         emptyList()
     )
 
-    TODO("Write library into $stdKlibFile")
+    File(resultJs).writeText(result.generatedCode)
+
+//    TODO("Write library into $stdKlibFile")
 }