diff --git a/dataforge-vis-common/build.gradle.kts b/dataforge-vis-common/build.gradle.kts
index 465b03c2..11236809 100644
--- a/dataforge-vis-common/build.gradle.kts
+++ b/dataforge-vis-common/build.gradle.kts
@@ -6,6 +6,10 @@ val dataforgeVersion: String by rootProject.extra
 //val kvisionVersion: String by rootProject.extra("2.0.0-M1")
 
 kotlin {
+    js {
+        useCommonJs()
+    }
+
     sourceSets {
         commonMain {
             dependencies {
diff --git a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/AbstractVisualObject.kt b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/AbstractVisualObject.kt
index e355fa94..259a5e3a 100644
--- a/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/AbstractVisualObject.kt
+++ b/dataforge-vis-common/src/commonMain/kotlin/hep/dataforge/vis/AbstractVisualObject.kt
@@ -1,9 +1,11 @@
 package hep.dataforge.vis
 
 import hep.dataforge.meta.*
+import hep.dataforge.meta.descriptors.NodeDescriptor
 import hep.dataforge.names.Name
 import hep.dataforge.names.asName
 import hep.dataforge.values.Value
+import hep.dataforge.values.ValueType
 import hep.dataforge.vis.VisualObject.Companion.STYLE_KEY
 import kotlinx.serialization.Transient
 
@@ -19,15 +21,15 @@ abstract class AbstractVisualObject : VisualObject {
 
     protected abstract var properties: Config?
 
-    override var styles: List<String>
+    final override var styles: List<String>
         get() = properties?.get(STYLE_KEY).stringList
         set(value) {
-            //val allStyles = (field + value).distinct()
             setProperty(STYLE_KEY, Value.of(value))
             updateStyles(value)
         }
 
     protected fun updateStyles(names: List<String>) {
+        styleCache = null
         names.mapNotNull { findStyle(it) }.asSequence()
             .flatMap { it.items.asSequence() }
             .distinctBy { it.key }
@@ -77,7 +79,7 @@ abstract class AbstractVisualObject : VisualObject {
     /**
      * All available properties in a layered form
      */
-    override fun allProperties(): Laminate = Laminate(properties, mergedStyles)
+    override fun allProperties(): Laminate = Laminate(properties, mergedStyles, parent?.allProperties())
 
     override fun getProperty(name: Name, inherit: Boolean): MetaItem<*>? {
         return if (inherit) {
@@ -86,6 +88,16 @@ abstract class AbstractVisualObject : VisualObject {
             properties?.get(name) ?: mergedStyles[name]
         }
     }
+
+    companion object {
+        val descriptor = NodeDescriptor {
+            defineValue(STYLE_KEY){
+                type(ValueType.STRING)
+                multiple = true
+            }
+        }
+
+    }
 }
 
 //fun VisualObject.findStyle(styleName: Name): Meta? {
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/js/react.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/js/react.kt
index 5f543dbe..0138393c 100644
--- a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/js/react.kt
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/js/react.kt
@@ -1,11 +1,28 @@
 package hep.dataforge.js
 
-import react.RBuilder
+import react.*
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
 
+class RFBuilder : RBuilder()
 
-fun <T> RBuilder.initState(init: () -> T): ReadWriteProperty<Any?, T> =
+/**
+ * Get functional component from [func]
+ */
+fun <P : RProps> component(
+    func: RFBuilder.(props: P) -> Unit
+): FunctionalComponent<P> {
+    return { props: P ->
+        val nodes = RFBuilder().apply { func(props) }.childList
+        when (nodes.size) {
+            0 -> null
+            1 -> nodes.first()
+            else -> createElement(Fragment, kotlinext.js.js {}, *nodes.toTypedArray())
+        }
+    }
+}
+
+fun <T> RFBuilder.initState(init: () -> T): ReadWriteProperty<Any?, T> =
     object : ReadWriteProperty<Any?, T> {
         val pair = react.useState(init)
         override fun getValue(thisRef: Any?, property: KProperty<*>): T {
@@ -17,3 +34,5 @@ fun <T> RBuilder.initState(init: () -> T): ReadWriteProperty<Any?, T> =
         }
     }
 
+fun <T> RFBuilder.memoize(vararg deps: dynamic, builder: () -> T): T = useMemo(builder, deps)
+
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ConfigEditorComponent.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ConfigEditorComponent.kt
index 42c57a26..1a985f40 100644
--- a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ConfigEditorComponent.kt
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ConfigEditorComponent.kt
@@ -1,6 +1,9 @@
 package hep.dataforge.vis.editor
 
+import hep.dataforge.js.RFBuilder
+import hep.dataforge.js.component
 import hep.dataforge.js.initState
+import hep.dataforge.js.memoize
 import hep.dataforge.meta.*
 import hep.dataforge.meta.descriptors.*
 import hep.dataforge.names.Name
@@ -37,11 +40,12 @@ interface ConfigEditorProps : RProps {
     var descriptor: NodeDescriptor?
 }
 
-private fun RBuilder.configEditorItem(props: ConfigEditorProps) {
+private fun RFBuilder.configEditorItem(props: ConfigEditorProps) {
     var expanded: Boolean by initState { true }
-    val item = props.root[props.name]
-    val descriptorItem: ItemDescriptor? = props.descriptor?.get(props.name)
-    val defaultItem = props.default?.get(props.name)
+    val item = memoize(props.root, props.name) { props.root[props.name] }
+    val descriptorItem: ItemDescriptor? = memoize(props.descriptor, props.name) { props.descriptor?.get(props.name) }
+    val defaultItem = memoize(props.default, props.name) { props.default?.get(props.name) }
+    val actualItem: MetaItem<Meta>? = item ?: defaultItem ?: descriptorItem?.defaultItem()
 
     val token = props.name.last()?.toString() ?: "Properties"
 
@@ -60,8 +64,6 @@ private fun RBuilder.configEditorItem(props: ConfigEditorProps) {
         return@useEffectWithCleanup { props.root.removeListener(this) }
     }
 
-    val actualItem: MetaItem<Meta>? = item ?: defaultItem ?: descriptorItem?.defaultItem()
-
     val expanderClick: (Event) -> Unit = {
         expanded = !expanded
     }
@@ -162,7 +164,7 @@ private fun RBuilder.configEditorItem(props: ConfigEditorProps) {
     }
 }
 
-val ConfigEditor: FunctionalComponent<ConfigEditorProps> = functionalComponent { configEditorItem(it) }
+val ConfigEditor: FunctionalComponent<ConfigEditorProps> = component { configEditorItem(it) }
 
 fun RBuilder.configEditor(
     config: Config,
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ObjectTree.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ObjectTree.kt
index bae57a29..54891cc0 100644
--- a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ObjectTree.kt
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ObjectTree.kt
@@ -1,6 +1,8 @@
 package hep.dataforge.vis.editor
 
+import hep.dataforge.js.RFBuilder
 import hep.dataforge.js.card
+import hep.dataforge.js.component
 import hep.dataforge.js.initState
 import hep.dataforge.names.Name
 import hep.dataforge.names.plus
@@ -26,7 +28,7 @@ interface TreeState : RState {
     var expanded: Boolean
 }
 
-private fun RBuilder.objectTree(props: ObjectTreeProps): Unit {
+private fun RFBuilder.objectTree(props: ObjectTreeProps): Unit {
     var expanded: Boolean by initState{ props.selected?.startsWith(props.name) ?: false }
 
     val onClick: (Event) -> Unit = {
@@ -90,7 +92,7 @@ private fun RBuilder.objectTree(props: ObjectTreeProps): Unit {
     }
 }
 
-val ObjectTree: FunctionalComponent<ObjectTreeProps> = functionalComponent { props ->
+val ObjectTree: FunctionalComponent<ObjectTreeProps> = component { props ->
     objectTree(props)
 }
 
diff --git a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ValueChooser.kt b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ValueChooser.kt
index a74da773..642c7ee4 100644
--- a/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ValueChooser.kt
+++ b/dataforge-vis-common/src/jsMain/kotlin/hep/dataforge/vis/editor/ValueChooser.kt
@@ -1,5 +1,6 @@
 package hep.dataforge.vis.editor
 
+import hep.dataforge.js.component
 import hep.dataforge.meta.descriptors.ValueDescriptor
 import hep.dataforge.meta.get
 import hep.dataforge.meta.string
@@ -11,11 +12,11 @@ import org.w3c.dom.HTMLInputElement
 import org.w3c.dom.HTMLSelectElement
 import org.w3c.dom.events.Event
 import react.RProps
+import react.RState
 import react.dom.div
 import react.dom.input
 import react.dom.option
 import react.dom.select
-import react.functionalComponent
 
 interface ValueChooserProps : RProps {
     var value: Value
@@ -23,7 +24,35 @@ interface ValueChooserProps : RProps {
     var valueChanged: (Value?) -> Unit
 }
 
-val ValueChooser = functionalComponent<ValueChooserProps> { props ->
+interface ValueChooserState : RState {
+    var value: Value
+}
+
+//class TextValueChooser(props: ValueChooserProps) : RComponent<ValueChooserProps, ValueChooserState>(props) {
+//
+//    override fun ValueChooserState.init(props: ValueChooserProps) {
+//        this.value = props.value
+//    }
+//
+//    val valueChanged: (Event) -> Unit = {
+//        val res = (it.target as HTMLInputElement).value.asValue()
+//        setState {
+//            this.value = res
+//        }
+//        props.valueChanged(res)
+//    }
+//
+//    override fun RBuilder.render() {
+//        input(type = InputType.text, classes = "float-right") {
+//            attrs {
+//                this.value = state.value.string
+//                onChangeFunction = valueChanged
+//            }
+//        }
+//    }
+//}
+
+val ValueChooser = component<ValueChooserProps> { props ->
 //    var state by initState {props.value }
     val descriptor = props.descriptor
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
index b60f8d42..557d728d 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/Proxy.kt
@@ -79,7 +79,8 @@ class Proxy private constructor(
             ?: error("Prototype with name $name not found in $this")
     }
 
-    override fun allProperties(): Laminate = Laminate(properties, mergedStyles, prototype.allProperties())
+    override fun allProperties(): Laminate =
+        Laminate(properties, mergedStyles, prototype.allProperties(), parent?.allProperties())
 
     override fun attachChildren() {
         //do nothing
@@ -135,7 +136,8 @@ class Proxy private constructor(
             //do nothing
         }
 
-        override fun allProperties(): Laminate = Laminate(properties, mergedStyles, prototype.allProperties())
+        override fun allProperties(): Laminate =
+            Laminate(properties, mergedStyles, prototype.allProperties(), parent?.allProperties())
 
     }
 
diff --git a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
index ebcb165c..1a4c5360 100644
--- a/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
+++ b/dataforge-vis-spatial/src/commonMain/kotlin/hep/dataforge/vis/spatial/VisualObject3D.kt
@@ -70,6 +70,12 @@ interface VisualObject3D : VisualObject {
 
                 defineItem(Material3D.MATERIAL_KEY.toString(), Material3D.descriptor)
 
+                //TODO replace by descriptor merge
+                defineValue(VisualObject.STYLE_KEY){
+                    type(ValueType.STRING)
+                    multiple = true
+                }
+
 //                Material3D.MATERIAL_COLOR_KEY put "#ffffff"
 //                Material3D.MATERIAL_OPACITY_KEY put 1.0
 //                Material3D.MATERIAL_WIREFRAME_KEY put false
diff --git a/demo/muon-monitor/src/jsMain/kotlin/ru/mipt/npm/muon/monitor/MMAppComponent.kt b/demo/muon-monitor/src/jsMain/kotlin/ru/mipt/npm/muon/monitor/MMAppComponent.kt
index 5b77d1db..87f3f124 100644
--- a/demo/muon-monitor/src/jsMain/kotlin/ru/mipt/npm/muon/monitor/MMAppComponent.kt
+++ b/demo/muon-monitor/src/jsMain/kotlin/ru/mipt/npm/muon/monitor/MMAppComponent.kt
@@ -2,6 +2,7 @@ package ru.mipt.npm.muon.monitor
 
 import hep.dataforge.context.Context
 import hep.dataforge.js.card
+import hep.dataforge.js.component
 import hep.dataforge.js.initState
 import hep.dataforge.names.Name
 import hep.dataforge.names.NameToken
@@ -21,7 +22,6 @@ import kotlinx.coroutines.launch
 import kotlinx.html.js.onClickFunction
 import react.RProps
 import react.dom.*
-import react.functionalComponent
 import kotlin.math.PI
 
 interface MMAppProps : RProps {
@@ -39,7 +39,7 @@ private val canvasConfig = Canvas {
     }
 }
 
-val MMApp = functionalComponent<MMAppProps> { props ->
+val MMApp = component<MMAppProps> { props ->
     var selected by initState { props.selected }
     var canvas: ThreeCanvas? by initState { null }