diff --git a/platform/script-debugger/backend/intellij.platform.scriptDebugger.backend.iml b/platform/script-debugger/backend/intellij.platform.scriptDebugger.backend.iml
index b854c0f62252..f0a16ac99ced 100644
--- a/platform/script-debugger/backend/intellij.platform.scriptDebugger.backend.iml
+++ b/platform/script-debugger/backend/intellij.platform.scriptDebugger.backend.iml
@@ -20,5 +20,6 @@
     <orderEntry type="module" module-name="intellij.platform.concurrency" />
     <orderEntry type="module" module-name="intellij.platform.ide.util.netty" />
     <orderEntry type="module" module-name="intellij.platform.ide.core.impl" />
+    <orderEntry type="module" module-name="intellij.platform.util.ex" />
   </component>
 </module>
\ No newline at end of file
diff --git a/platform/script-debugger/backend/src/debugger/util.kt b/platform/script-debugger/backend/src/debugger/util.kt
index b6eea7b5ace9..d4c9372ea1e3 100644
--- a/platform/script-debugger/backend/src/debugger/util.kt
+++ b/platform/script-debugger/backend/src/debugger/util.kt
@@ -3,22 +3,20 @@ package org.jetbrains.debugger
 
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.util.io.FileUtil
-import com.intellij.openapi.util.io.FileUtilRt
 import com.intellij.openapi.util.registry.Registry
 import com.intellij.util.concurrency.AppExecutorUtil
 import com.intellij.util.io.addChannelListener
-import com.intellij.util.text.CharSequenceBackedByChars
+import com.intellij.util.io.createParentDirectories
 import io.netty.buffer.ByteBuf
 import io.netty.channel.Channel
 import org.jetbrains.annotations.ApiStatus
-import java.io.File
-import java.io.FileOutputStream
-import java.nio.CharBuffer
 import java.text.SimpleDateFormat
 import java.util.concurrent.Future
 import java.util.concurrent.LinkedBlockingQueue
 import java.util.concurrent.TimeUnit
 import java.util.concurrent.atomic.AtomicInteger
+import kotlin.io.path.Path
+import kotlin.io.path.writer
 
 internal class LogEntry(val message: CharSequence, val marker: String) {
   internal val time = System.currentTimeMillis()
@@ -34,44 +32,35 @@ class MessagingLogger internal constructor(debugFileBaseName: String, suffix: St
       val sessionNumber = sequentialNumber.getAndIncrement()
       val nameSuffix = if (sessionNumber == 0) "$suffix.json" else "$suffix-$sessionNumber.json"
 
-      val file = File(FileUtil.expandUserHome(debugFileBaseName + nameSuffix))
-      FileUtilRt.createParentDirs(file)
-      val out = FileOutputStream(file)
-      val writer = out.writer()
-      writer.write("[\n")
-      writer.flush()
-      val fileChannel = out.channel
-
-      val dateFormatter = SimpleDateFormat("HH.mm.ss,SSS")
-
-      try {
-        while (true) {
-          val entry = queue.take()
-
-          writer.write("""{"timestamp": "${dateFormatter.format(entry.time)}", """)
-          val message = entry.message
-          writer.write("\"${entry.marker}\": ")
-          writer.flush()
-
-          if (message is CharSequenceBackedByChars) {
-            fileChannel.write(message.byteBuffer)
-          }
-          else {
-            fileChannel.write(Charsets.UTF_8.encode(CharBuffer.wrap(message)))
-          }
-
-          writer.write("},\n")
-          writer.flush()
-        }
-      }
-      catch (e: InterruptedException) {
-        // ignored
-      }
-      finally {
-        writer.write("]")
+      val logPath = Path(FileUtil.expandUserHome(debugFileBaseName + nameSuffix))
+      logPath.createParentDirectories()
+      logPath.writer().use { writer ->
+        writer.write("[\n")
         writer.flush()
-        sequentialNumber.decrementAndGet()
-        out.close()
+        val dateFormatter = SimpleDateFormat("HH.mm.ss,SSS")
+
+        try {
+          while (true) {
+            val entry = queue.take()
+
+            writer.write("""{"timestamp": "${dateFormatter.format(entry.time)}", """)
+            writer.write("\"${entry.marker}\": ")
+            writer.flush()
+
+            writer.append(entry.message)
+
+            writer.write("},\n")
+            writer.flush()
+          }
+        }
+        catch (_: InterruptedException) {
+          // ignored
+        }
+        finally {
+          writer.write("]")
+          writer.flush()
+          sequentialNumber.decrementAndGet()
+        }
       }
     }
   }