diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt
index 9308a22e8d7..5f32466bafd 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/PropertiesProvider.kt
@@ -373,11 +373,8 @@ internal class PropertiesProvider private constructor(private val project: Proje
     val ignoreTcsmOverflow: Boolean
         get() = booleanProperty(IGNORE_TCSM_OVERFLOW) ?: false
 
-    /**
-     * Automaticaly discover external .d.ts declarations
-     */
-    val jsDiscoverTypes: Boolean?
-        get() = booleanProperty("kotlin.js.experimental.discoverTypes")
+    val errorJsGenerateExternals: Boolean?
+        get() = booleanProperty("kotlin.js.generate.externals")
 
     /**
      * Use Kotlin/JS backend compiler type
diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/nodejs/NodeJsRootExtension.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/nodejs/NodeJsRootExtension.kt
index 96f4d53ac30..80217233edd 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/nodejs/NodeJsRootExtension.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/nodejs/NodeJsRootExtension.kt
@@ -31,8 +31,10 @@ open class NodeJsRootExtension(@Transient val rootProject: Project) : Configurat
         check(rootProject.rootProject == rootProject)
     }
 
+    private val logger = rootProject.logger
+
     private val gradleHome = rootProject.gradle.gradleUserHomeDir.also {
-        rootProject.logger.kotlinInfo("Storing cached files in $it")
+        logger.kotlinInfo("Storing cached files in $it")
     }
 
     var installationDir by Property(gradleHome.resolve("nodejs"))
@@ -49,13 +51,21 @@ open class NodeJsRootExtension(@Transient val rootProject: Project) : Configurat
     @Transient
     private val projectProperties = PropertiesProvider(rootProject)
 
-    inner class Experimental {
-        val discoverTypes: Boolean
-            get() = projectProperties.jsDiscoverTypes == true
+    private val errorGenerateExternals = run {
+        if (projectProperties.errorJsGenerateExternals != null) {
+            logger.warn(
+                """
+                |
+                |==========
+                |Please note, Dukat integration in Gradle plugin does not work now, it was removed.
+                |We rethink how we can integrate properly.
+                |==========
+                |
+                """.trimMargin()
+            )
+        }
     }
 
-    val experimental = Experimental()
-
     val taskRequirements: TasksRequirements = TasksRequirements()
 
     val nodeJsSetupTaskProvider: TaskProvider<out NodeJsSetupTask>
diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/resolver/KotlinCompilationNpmResolver.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/resolver/KotlinCompilationNpmResolver.kt
index bf2cb714980..09dc8b1c5d5 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/resolver/KotlinCompilationNpmResolver.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/resolver/KotlinCompilationNpmResolver.kt
@@ -398,7 +398,6 @@ internal class KotlinCompilationNpmResolver(
     ) : Serializable {
         private val projectPackagesDir by lazy { compilationResolver.nodeJs_.projectPackagesDir }
         private val rootDir by lazy { compilationResolver.nodeJs_.rootProject.rootDir }
-        private val dukatPackageVersion by lazy { compilationResolver.nodeJs_.versions.dukat }
 
         @Transient
         internal lateinit var compilationResolver: KotlinCompilationNpmResolver