[K/JS] Generate the similar variant of newlines on different OS in the @file:JsExport tests generating task

js/js.tests/build.gradle.kts

@@ -5,6 +5,7 @@ import org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinUsages
 import org.jetbrains.kotlin.gradle.targets.js.d8.D8RootPlugin
 import org.jetbrains.kotlin.ideaExt.idea
+import org.apache.tools.ant.filters.FixCrLfFilter
 
 plugins {
     kotlin("jvm")
@@ -71,7 +72,7 @@ dependencies {
     testRuntimeOnly(project(":kotlin-preloader")) // it's required for ant tests
     testRuntimeOnly(project(":compiler:backend-common"))
     testRuntimeOnly(commonDependency("org.fusesource.jansi", "jansi"))
-    
+
     antLauncherJar(commonDependency("org.apache.ant", "ant"))
     antLauncherJar(toolsJar())
 
@@ -193,6 +194,7 @@ fun generateJsExportOnFileTestFor(dir: String): Task = task<Copy>("generate-js-e
 
     eachFile {
         var isFirstLine = true
+
         filter {
             when {
                 isFirstLine && name.endsWith(".kt") -> "/** This file is generated by {@link :js:js.test:generateJsExportOnFileTestFilesForTS} task. DO NOT MODIFY MANUALLY */\n\n$it"
@@ -202,6 +204,12 @@ fun generateJsExportOnFileTestFor(dir: String): Task = task<Copy>("generate-js-e
                 else -> it.replace("@JsExport(?!.)".toRegex(), "")
             }
         }
+
+        filter(
+            FixCrLfFilter::class,
+            "eol" to FixCrLfFilter.CrLf.newInstance("lf"),
+            "fixlast" to false
+        )
     }
 
     into(outputDir)
@@ -211,10 +219,10 @@ val generateTypeScriptJsExportOnFileTests = sequential(
     tasks = typescriptTestsDir
         .listFiles { it: File ->
             it.isDirectory &&
-                    !it.path.endsWith("/selective-export") &&
-                    !it.path.endsWith("/implicit-export") &&
-                    !it.path.endsWith("/inheritance") &&
-                    !it.path.endsWith("/strict-implicit-export") &&
+                    !it.path.endsWith("selective-export") &&
+                    !it.path.endsWith("implicit-export") &&
+                    !it.path.endsWith("inheritance") &&
+                    !it.path.endsWith("strict-implicit-export") &&
                     !it.path.endsWith(exportFileDirPostfix)
         }
         .map { generateJsExportOnFileTestFor(it.name) }