diff --git a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/incremental/AbstractJsProtoComparisonTest.kt b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/incremental/AbstractJsProtoComparisonTest.kt
index 7e84fe2dc2d..f796c54aa4d 100644
--- a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/incremental/AbstractJsProtoComparisonTest.kt
+++ b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/incremental/AbstractJsProtoComparisonTest.kt
@@ -20,21 +20,12 @@ import org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments
 import org.jetbrains.kotlin.cli.common.arguments.K2JsArgumentConstants
 import org.jetbrains.kotlin.compilerRunner.OutputItemsCollectorImpl
 import org.jetbrains.kotlin.config.Services
-import org.jetbrains.kotlin.incremental.ClassProtoData
-import org.jetbrains.kotlin.incremental.PackagePartProtoData
 import org.jetbrains.kotlin.incremental.ProtoData
+import org.jetbrains.kotlin.incremental.getProtoData
 import org.jetbrains.kotlin.incremental.js.IncrementalResultsConsumer
 import org.jetbrains.kotlin.incremental.js.IncrementalResultsConsumerImpl
 import org.jetbrains.kotlin.incremental.utils.TestMessageCollector
-import org.jetbrains.kotlin.metadata.ProtoBuf
-import org.jetbrains.kotlin.metadata.js.JsProtoBuf
 import org.jetbrains.kotlin.name.ClassId
-import org.jetbrains.kotlin.name.FqName
-import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.serialization.deserialization.NameResolverImpl
-import org.jetbrains.kotlin.serialization.deserialization.getClassId
-import org.jetbrains.kotlin.serialization.deserialization.getExtensionOrNull
-import org.jetbrains.kotlin.serialization.js.JsSerializerProtocol
 import org.junit.Assert
 import java.io.File
 
@@ -79,21 +70,3 @@ abstract class AbstractJsProtoComparisonTest : AbstractProtoComparisonTest<Proto
 
     override fun ProtoData.toProtoData(): ProtoData? = this
 }
-
-fun getProtoData(sourceFile: File, metadata: ByteArray): Map<ClassId, ProtoData>  {
-    val classes = hashMapOf<ClassId, ProtoData>()
-    val proto = ProtoBuf.PackageFragment.parseFrom(metadata, JsSerializerProtocol.extensionRegistry)
-    val nameResolver = NameResolverImpl(proto.strings, proto.qualifiedNames)
-
-    proto.class_List.forEach {
-        val classId = nameResolver.getClassId(it.fqName)
-        classes[classId] = ClassProtoData(it, nameResolver)
-    }
-
-    proto.`package`.apply {
-        val packageFqName = getExtensionOrNull(JsProtoBuf.packageFqName)?.let(nameResolver::getPackageFqName) ?: FqName.ROOT
-        val packagePartClassId = ClassId(packageFqName, Name.identifier(sourceFile.nameWithoutExtension.capitalize() + "Kt"))
-        classes[packagePartClassId] = PackagePartProtoData(this, nameResolver, packageFqName)
-    }
-    return classes
-}