Major refactoring of the multi-platform components.

Dependencies upgrade.
A lot of code style fixes.

26 files changed, 389 insertions, 171 deletions

diff --git a/src/main/kotlin/pl/treksoft/kvision/core/Widget.kt b/src/main/kotlin/pl/treksoft/kvision/core/Widget.kt
index 52f60813..9f28c52c 100644
--- a/src/main/kotlin/pl/treksoft/kvision/core/Widget.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/core/Widget.kt
@@ -312,7 +312,7 @@ open class Widget(classes: Set<String> = setOf()) : StyledComponent() {
                     afterPostpatch(v)
                 }
             }
-            destroy = { _ ->
+            destroy = {
                 afterDestroy()
                 vnode = null
                 vnode
diff --git a/src/main/kotlin/pl/treksoft/kvision/data/DataContainer.kt b/src/main/kotlin/pl/treksoft/kvision/data/DataContainer.kt
index 80a05ba7..d8b74c54 100644
--- a/src/main/kotlin/pl/treksoft/kvision/data/DataContainer.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/data/DataContainer.kt
@@ -61,7 +61,7 @@ class DataContainer<M, C : Component>(
 
     init {
         container.parent = this
-        model.onUpdate += { _ ->
+        model.onUpdate += {
             update()
         }
         update()
diff --git a/src/main/kotlin/pl/treksoft/kvision/dropdown/DropDown.kt b/src/main/kotlin/pl/treksoft/kvision/dropdown/DropDown.kt
index 4ae1e93b..a521fe95 100644
--- a/src/main/kotlin/pl/treksoft/kvision/dropdown/DropDown.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/dropdown/DropDown.kt
@@ -61,6 +61,7 @@ enum class DD(val option: String) {
  * @param withCaret determines if the dropdown button renders caret
  * @param classes a set of CSS class names
  */
+@Suppress("TooManyFunctions")
 open class DropDown(
     text: String, elements: List<StringPair>? = null, icon: String? = null,
     style: ButtonStyle = ButtonStyle.DEFAULT, disabled: Boolean = false, val forNavbar: Boolean = false,
@@ -74,7 +75,7 @@ open class DropDown(
         set(value) {
             button.text = value
         }
-    private var elements by refreshOnUpdate(elements, { setChildrenFromElements() })
+    private var elements by refreshOnUpdate(elements) { setChildrenFromElements() }
     /**
      * The icon of the dropdown button.
      */
@@ -207,18 +208,18 @@ open class DropDown(
 
     @Suppress("UnsafeCastFromDynamic")
     override fun afterInsert(node: VNode) {
-        this.getElementJQuery()?.on("show.bs.dropdown", { e, _ ->
+        this.getElementJQuery()?.on("show.bs.dropdown") { e, _ ->
             this.dispatchEvent("showBsDropdown", obj { detail = e })
-        })
-        this.getElementJQuery()?.on("shown.bs.dropdown", { e, _ ->
+        }
+        this.getElementJQuery()?.on("shown.bs.dropdown") { e, _ ->
             this.dispatchEvent("shownBsDropdown", obj { detail = e })
-        })
-        this.getElementJQuery()?.on("hide.bs.dropdown", { e, _ ->
+        }
+        this.getElementJQuery()?.on("hide.bs.dropdown") { e, _ ->
             this.dispatchEvent("hideBsDropdown", obj { detail = e })
-        })
-        this.getElementJQuery()?.on("hidden.bs.dropdown", { e, _ ->
+        }
+        this.getElementJQuery()?.on("hidden.bs.dropdown") { e, _ ->
             this.dispatchEvent("hiddenBsDropdown", obj { detail = e })
-        })
+        }
     }
 
     override fun getSnClass(): List<StringBoolPair> {
diff --git a/src/main/kotlin/pl/treksoft/kvision/form/Form.kt b/src/main/kotlin/pl/treksoft/kvision/form/Form.kt
index 19f7e68a..8f93c7ea 100644
--- a/src/main/kotlin/pl/treksoft/kvision/form/Form.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/form/Form.kt
@@ -23,12 +23,15 @@ package pl.treksoft.kvision.form
 
 import kotlinx.serialization.KSerializer
 import kotlinx.serialization.Mapper
+import kotlinx.serialization.context.MutableSerialContextImpl
 import kotlinx.serialization.decode
-import kotlinx.serialization.json.JSON
 import kotlinx.serialization.serializer
 import pl.treksoft.kvision.i18n.I18n.trans
-import pl.treksoft.kvision.types.KDate
+import pl.treksoft.kvision.types.DateSerializer
 import pl.treksoft.kvision.types.KFile
+import pl.treksoft.kvision.types.toStringF
+import pl.treksoft.kvision.utils.JSON
+import kotlin.js.Date
 import kotlin.js.Json
 import kotlin.reflect.KProperty1
 
@@ -84,8 +87,8 @@ class Form<K : Any>(private val panel: FormPanel<K>? = null, private val seriali
         modelFactory = {
             val map = it.flatMap { entry ->
                 when (entry.value) {
-                    is KDate -> {
-                        listOf(entry.key to entry.value, "${entry.key}.time" to (entry.value as KDate).time)
+                    is Date -> {
+                        listOf(entry.key to (entry.value as? Date)?.toStringF())
                     }
                     is List<*> -> {
                         @Suppress("UNCHECKED_CAST")
@@ -93,9 +96,9 @@ class Form<K : Any>(private val panel: FormPanel<K>? = null, private val seriali
                             listOf(entry.key to entry.value, "${entry.key}.size" to list.size) +
                                     list.mapIndexed { index, kFile ->
                                         listOf(
-                                            "${entry.key}.${index}.name" to kFile.name,
-                                            "${entry.key}.${index}.size" to kFile.size,
-                                            "${entry.key}.${index}.content" to kFile.content
+                                            "${entry.key}.$index.name" to kFile.name,
+                                            "${entry.key}.$index.size" to kFile.size,
+                                            "${entry.key}.$index.content" to kFile.content
                                         )
                                     }.flatten()
                         } ?: listOf()
@@ -104,6 +107,7 @@ class Form<K : Any>(private val panel: FormPanel<K>? = null, private val seriali
                 }
             }.toMap()
             val mapper = Mapper.InNullableMapper(FormMapWrapper(map))
+            mapper.context = MutableSerialContextImpl().apply { registerSerializer(Date::class, DateSerializer) }
             mapper.decode(serializer)
         }
     }
@@ -182,8 +186,8 @@ class Form<K : Any>(private val panel: FormPanel<K>? = null, private val seriali
      * @param validator optional validation function
      * @return current form
      */
-    fun <C : KDateFormControl> add(
-        key: KProperty1<K, KDate?>, control: C, required: Boolean = false, requiredMessage: String? = null,
+    fun <C : DateFormControl> add(
+        key: KProperty1<K, Date?>, control: C, required: Boolean = false, requiredMessage: String? = null,
         validatorMessage: ((C) -> String?)? = null,
         validator: ((C) -> Boolean?)? = null
     ): Form<K> {
@@ -278,7 +282,7 @@ class Form<K : Any>(private val panel: FormPanel<K>? = null, private val seriali
      * @return data model as JSON
      */
     fun getDataJson(): Json {
-        return kotlin.js.JSON.parse(JSON.stringify(serializer, getData()))
+        return kotlin.js.JSON.parse(JSON.plain.stringify(serializer, getData()))
     }
 
     /**
diff --git a/src/main/kotlin/pl/treksoft/kvision/form/FormControl.kt b/src/main/kotlin/pl/treksoft/kvision/form/FormControl.kt
index 6aff842a..6759fef9 100644
--- a/src/main/kotlin/pl/treksoft/kvision/form/FormControl.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/form/FormControl.kt
@@ -22,8 +22,8 @@
 package pl.treksoft.kvision.form
 
 import pl.treksoft.kvision.core.Component
-import pl.treksoft.kvision.types.KDate
 import pl.treksoft.kvision.types.KFile
+import kotlin.js.Date
 
 /**
  * Input controls sizes.
@@ -190,15 +190,15 @@ interface BoolFormControl : FormControl {
 /**
  * Base interface of a form control with a date value.
  */
-interface KDateFormControl : FormControl {
+interface DateFormControl : FormControl {
     /**
      * Date value.
      */
-    var value: KDate?
+    var value: Date?
 
-    override fun getValue(): KDate? = value
+    override fun getValue(): Date? = value
     override fun setValue(v: Any?) {
-        value = v as? KDate
+        value = v as? Date
     }
 
     override fun getValueAsString(): String? = value?.toString()
diff --git a/src/main/kotlin/pl/treksoft/kvision/form/FormPanel.kt b/src/main/kotlin/pl/treksoft/kvision/form/FormPanel.kt
index 3811ed82..3533dee5 100644
--- a/src/main/kotlin/pl/treksoft/kvision/form/FormPanel.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/form/FormPanel.kt
@@ -32,8 +32,8 @@ import pl.treksoft.kvision.form.check.Radio
 import pl.treksoft.kvision.html.TAG
 import pl.treksoft.kvision.html.Tag
 import pl.treksoft.kvision.panel.SimplePanel
-import pl.treksoft.kvision.types.KDate
 import pl.treksoft.kvision.types.KFile
+import kotlin.js.Date
 import kotlin.js.Json
 import kotlin.reflect.KProperty1
 
@@ -287,8 +287,8 @@ open class FormPanel<K : Any>(
      * @param validator optional validation function
      * @return current form panel
      */
-    open fun <C : KDateFormControl> add(
-        key: KProperty1<K, KDate?>, control: C, required: Boolean = false, requiredMessage: String? = null,
+    open fun <C : DateFormControl> add(
+        key: KProperty1<K, Date?>, control: C, required: Boolean = false, requiredMessage: String? = null,
         validatorMessage: ((C) -> String?)? = null,
         validator: ((C) -> Boolean?)? = null
     ): FormPanel<K> {
diff --git a/src/main/kotlin/pl/treksoft/kvision/form/check/CheckInput.kt b/src/main/kotlin/pl/treksoft/kvision/form/check/CheckInput.kt
index f79c1b48..2df3a055 100644
--- a/src/main/kotlin/pl/treksoft/kvision/form/check/CheckInput.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/form/check/CheckInput.kt
@@ -67,14 +67,14 @@ open class CheckInput(
     /**
      * The selection state of the input.
      */
-    var value by refreshOnUpdate(value, { refreshState() })
+    var value by refreshOnUpdate(value) { refreshState() }
     /**
      * The value attribute of the generated HTML input element.
      *
      * This value is placed directly in generated HTML code, while the [value] property is dynamically
      * bound to the input selection state.
      */
-    var startValue by refreshOnUpdate(value, { this.value = it; refresh() })
+    var startValue by refreshOnUpdate(value) { this.value = it; refresh() }
     /**
      * The type of the generated HTML input element.
      */
diff --git a/src/main/kotlin/pl/treksoft/kvision/form/check/RadioGroup.kt b/src/main/kotlin/pl/treksoft/kvision/form/check/RadioGroup.kt
index fdc1e3af..e2f27c36 100644
--- a/src/main/kotlin/pl/treksoft/kvision/form/check/RadioGroup.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/form/check/RadioGroup.kt
@@ -54,12 +54,12 @@ open class RadioGroup(
     /**
      * A list of options (label to value pairs) for the group.
      */
-    var options by refreshOnUpdate(options, { setChildrenFromOptions() })
+    var options by refreshOnUpdate(options) { setChildrenFromOptions() }
 
     /**
      * A value of the selected option.
      */
-    override var value by refreshOnUpdate(value, { setValueToChildren(it) })
+    override var value by refreshOnUpdate(value) { setValueToChildren(it) }
 
     /**
      * Determines if the options are rendered inline.
diff --git a/src/main/kotlin/pl/treksoft/kvision/form/text/AbstractTextInput.kt b/src/main/kotlin/pl/treksoft/kvision/form/text/AbstractTextInput.kt
index e41cfb8f..3a06f47b 100644
--- a/src/main/kotlin/pl/treksoft/kvision/form/text/AbstractTextInput.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/form/text/AbstractTextInput.kt
@@ -51,14 +51,14 @@ abstract class AbstractTextInput(
     /**
      * Text input value.
      */
-    var value by refreshOnUpdate(value, { refreshState() })
+    var value by refreshOnUpdate(value) { refreshState() }
     /**
      * The value attribute of the generated HTML input element.
      *
      * This value is placed directly in generated HTML code, while the [value] property is dynamically
      * bound to the text input value.
      */
-    var startValue by refreshOnUpdate(value, { this.value = it; refresh() })
+    var startValue by refreshOnUpdate(value) { this.value = it; refresh() }
     /**
      * The placeholder for the text input.
      */
diff --git a/src/main/kotlin/pl/treksoft/kvision/html/Template.kt b/src/main/kotlin/pl/treksoft/kvision/html/Template.kt
index 9a52eb5b..1f377406 100644
--- a/src/main/kotlin/pl/treksoft/kvision/html/Template.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/html/Template.kt
@@ -47,6 +47,6 @@ interface Template {
         set(value) {
             if (!rich) rich = true
             templateDataObj = value
-            content = template?.invoke(value) ?: templates.get(I18n.language)?.invoke(value)
+            content = template?.invoke(value) ?: templates[I18n.language]?.invoke(value)
         }
 }
diff --git a/src/main/kotlin/pl/treksoft/kvision/modal/Confirm.kt b/src/main/kotlin/pl/treksoft/kvision/modal/Confirm.kt
index 693ecbaa..e16ca87e 100644
--- a/src/main/kotlin/pl/treksoft/kvision/modal/Confirm.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/modal/Confirm.kt
@@ -78,7 +78,7 @@ open class Confirm(
     /**
      * Determines if Cancel button is visible.
      */
-    var cancelVisible by refreshOnUpdate(cancelVisible, { refreshCancelButton() })
+    var cancelVisible by refreshOnUpdate(cancelVisible) { refreshCancelButton() }
 
     /**
      * Yes button text.
diff --git a/src/main/kotlin/pl/treksoft/kvision/modal/Dialog.kt b/src/main/kotlin/pl/treksoft/kvision/modal/Dialog.kt
index d5695db3..e67a6f17 100644
--- a/src/main/kotlin/pl/treksoft/kvision/modal/Dialog.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/modal/Dialog.kt
@@ -37,7 +37,6 @@ import kotlin.coroutines.resume
  * @param classes a set of CSS class names
  * @param init an initializer extension function
  */
-@Suppress("EXPERIMENTAL_FEATURE_WARNING")
 open class Dialog<R>(
     caption: String? = null, closeButton: Boolean = true,
     size: ModalSize? = null, animation: Boolean = true, escape: Boolean = true,
diff --git a/src/main/kotlin/pl/treksoft/kvision/modal/Modal.kt b/src/main/kotlin/pl/treksoft/kvision/modal/Modal.kt
index e09e9f7f..a0456e7e 100644
--- a/src/main/kotlin/pl/treksoft/kvision/modal/Modal.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/modal/Modal.kt
@@ -218,20 +218,20 @@ open class Modal(
             keyboard = escape
             backdrop = if (escape) "true" else "static"
         })
-        this.getElementJQuery()?.on("show.bs.modal", { e, _ ->
+        this.getElementJQuery()?.on("show.bs.modal") { e, _ ->
             this.dispatchEvent("showBsModal", obj { detail = e })
-        })
-        this.getElementJQuery()?.on("shown.bs.modal", { e, _ ->
+        }
+        this.getElementJQuery()?.on("shown.bs.modal") { e, _ ->
             this.dispatchEvent("shownBsModal", obj { detail = e })
-        })
-        this.getElementJQuery()?.on("hide.bs.modal", { e, _ ->
+        }
+        this.getElementJQuery()?.on("hide.bs.modal") { e, _ ->
             this.dispatchEvent("hideBsModal", obj { detail = e })
-        })
-        this.getElementJQuery()?.on("hidden.bs.modal", { e, _ ->
+        }
+        this.getElementJQuery()?.on("hidden.bs.modal") { e, _ ->
             this.visible = false
             hide()
             this.dispatchEvent("hiddenBsModal", obj { detail = e })
-        })
+        }
     }
 
     override fun hide(): Widget {
diff --git a/src/main/kotlin/pl/treksoft/kvision/panel/FlexPanel.kt b/src/main/kotlin/pl/treksoft/kvision/panel/FlexPanel.kt
index d22a285b..310d4d49 100644
--- a/src/main/kotlin/pl/treksoft/kvision/panel/FlexPanel.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/panel/FlexPanel.kt
@@ -104,7 +104,7 @@ open class FlexPanel(
     /**
      * CSS flexbox direction.
      */
-    var direction by refreshOnUpdate(direction, { refreshSpacing(); refresh() })
+    var direction by refreshOnUpdate(direction) { refreshSpacing(); refresh() }
     /**
      * CSS flexbox wrap mode.
      */
@@ -124,7 +124,7 @@ open class FlexPanel(
     /**
      * The spacing between columns/rows.
      */
-    var spacing by refreshOnUpdate(spacing, { refreshSpacing(); refresh() })
+    var spacing by refreshOnUpdate(spacing) { refreshSpacing(); refresh() }
 
     init {
         @Suppress("LeakingThis")
diff --git a/src/main/kotlin/pl/treksoft/kvision/panel/ResponsiveGridPanel.kt b/src/main/kotlin/pl/treksoft/kvision/panel/ResponsiveGridPanel.kt
index edcf5789..7a5b07d6 100644
--- a/src/main/kotlin/pl/treksoft/kvision/panel/ResponsiveGridPanel.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/panel/ResponsiveGridPanel.kt
@@ -62,7 +62,7 @@ open class ResponsiveGridPanel(
     /**
      * Text align of grid cells.
      */
-    var align by refreshOnUpdate(align, { refreshRowContainers() })
+    var align by refreshOnUpdate(align) { refreshRowContainers() }
 
     internal val map = mutableMapOf<Int, MutableMap<Int, WidgetParam>>()
     private var auto: Boolean = true
@@ -86,7 +86,7 @@ open class ResponsiveGridPanel(
         val cCol = maxOf(col, 0)
         if (row > rows - 1) rows = cRow + 1
         if (col > cols - 1) cols = cCol + 1
-        map.getOrPut(cRow, { mutableMapOf() })[cCol] = WidgetParam(child, size, offset)
+        map.getOrPut(cRow) { mutableMapOf() }[cCol] = WidgetParam(child, size, offset)
         if (size > 0 || offset > 0) auto = false
         refreshRowContainers()
         return this
diff --git a/src/main/kotlin/pl/treksoft/kvision/progress/ProgressIndicator.kt b/src/main/kotlin/pl/treksoft/kvision/progress/ProgressIndicator.kt
index 479ad62e..256d15d7 100644
--- a/src/main/kotlin/pl/treksoft/kvision/progress/ProgressIndicator.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/progress/ProgressIndicator.kt
@@ -67,15 +67,15 @@ internal class ProgressIndicator(
     /**
      * The current progress.
      */
-    var progress by refreshOnUpdate(progress, { refreshWidth() })
+    var progress by refreshOnUpdate(progress) { refreshWidth() }
     /**
      * The minimal progress.
      */
-    var min by refreshOnUpdate(min, { refreshWidth() })
+    var min by refreshOnUpdate(min) { refreshWidth() }
     /**
      * The maximal progress.
      */
-    var max by refreshOnUpdate(max, { refreshWidth() })
+    var max by refreshOnUpdate(max) { refreshWidth() }
     /**
      * The style of the progress indicator.
      */
diff --git a/src/main/kotlin/pl/treksoft/kvision/remote/CallAgent.kt b/src/main/kotlin/pl/treksoft/kvision/remote/CallAgent.kt
index 4247b0b7..a48a6b1f 100644
--- a/src/main/kotlin/pl/treksoft/kvision/remote/CallAgent.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/remote/CallAgent.kt
@@ -21,10 +21,10 @@
  */
 package pl.treksoft.kvision.remote
 
-import kotlinx.serialization.json.JSON
 import pl.treksoft.jquery.JQueryAjaxSettings
 import pl.treksoft.jquery.JQueryXHR
 import pl.treksoft.jquery.jQuery
+import pl.treksoft.kvision.utils.JSON
 import pl.treksoft.kvision.utils.obj
 import kotlin.js.Promise
 import kotlin.js.undefined
@@ -56,8 +56,8 @@ open class CallAgent {
         method: RpcHttpMethod = RpcHttpMethod.POST
     ): Promise<String> {
         val jsonRpcRequest = JsonRpcRequest(counter++, url, data)
-        val jsonData = JSON.stringify(jsonRpcRequest)
-        return Promise({ resolve, reject ->
+        val jsonData = JSON.plain.stringify(jsonRpcRequest)
+        return Promise { resolve, reject ->
             jQuery.ajax(url, obj {
                 this.contentType = "application/json"
                 this.data = jsonData
@@ -85,7 +85,7 @@ open class CallAgent {
                             }
                         }
             })
-        })
+        }
     }
 
     /**
@@ -103,7 +103,7 @@ open class CallAgent {
         contentType: String = "application/json",
         beforeSend: ((JQueryXHR, JQueryAjaxSettings) -> Boolean)? = null
     ): Promise<dynamic> {
-        return Promise({ resolve, reject ->
+        return Promise { resolve, reject ->
             jQuery.ajax(url, obj {
                 this.contentType = contentType
                 this.data = data
@@ -127,6 +127,6 @@ open class CallAgent {
                         }
                 this.beforeSend = beforeSend
             })
-        })
+        }
     }
 }
diff --git a/src/main/kotlin/pl/treksoft/kvision/remote/RemoteAgent.kt b/src/main/kotlin/pl/treksoft/kvision/remote/RemoteAgent.kt
index 25c20445..b4c8561e 100644
--- a/src/main/kotlin/pl/treksoft/kvision/remote/RemoteAgent.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/remote/RemoteAgent.kt
@@ -24,25 +24,24 @@ package pl.treksoft.kvision.remote
 import kotlinx.coroutines.Deferred
 import kotlinx.coroutines.asDeferred
 import kotlinx.serialization.KSerializer
-import kotlinx.serialization.internal.ArrayListSerializer
-import kotlinx.serialization.internal.BooleanSerializer
-import kotlinx.serialization.internal.CharSerializer
-import kotlinx.serialization.internal.DoubleSerializer
-import kotlinx.serialization.internal.LongSerializer
-import kotlinx.serialization.internal.StringSerializer
-import kotlinx.serialization.json.JSON
+import kotlinx.serialization.internal.*
 import kotlinx.serialization.list
 import kotlinx.serialization.serializer
-import kotlin.js.js
+import pl.treksoft.kvision.types.DateSerializer
+import pl.treksoft.kvision.types.toStringF
+import pl.treksoft.kvision.utils.JSON
+import kotlin.js.Date
 import kotlin.reflect.KClass
 import kotlin.js.JSON as NativeJSON
 
-internal class NonStandardTypeException(type: String) : Exception("Non standard type: $type!")
+internal class NotStandardTypeException(type: String) : Exception("Not a standard type: $type!")
+
+internal class NotEnumTypeException : Exception("Not the Enum type!")
 
 /**
  * Client side agent for JSON-RPC remote calls.
  */
-@Suppress("EXPERIMENTAL_FEATURE_WARNING", "LargeClass", "TooManyFunctions")
+@Suppress("LargeClass", "TooManyFunctions")
 open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
 
     val callAgent = CallAgent()
@@ -55,9 +54,15 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, method = method).then {
             try {
+                @Suppress("UNCHECKED_CAST")
                 deserialize<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer(), it)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnum(RET::class as KClass<Any>, it) as RET
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer(), it)
+                }
             }
         }.asDeferred()
     }
@@ -72,9 +77,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, method = method).then {
             try {
-                deserializeLists<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer().list, it)
+                deserializeList<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnumList(RET::class as KClass<Any>, it) as List<RET>
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer().list, it)
+                }
             }
         }.asDeferred()
     }
@@ -92,9 +102,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
         return callAgent.jsonRpcCall(url, listOf(data), method).then {
             try {
                 @Suppress("UNCHECKED_CAST")
-                deserialize<RET>(it, (RET::class as KClass<Any>).js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer(), it)
+                deserialize<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnum(RET::class as KClass<Any>, it) as RET
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer(), it)
+                }
             }
         }.asDeferred()
     }
@@ -111,9 +126,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data), method).then {
             try {
-                deserializeLists<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer().list, it)
+                deserializeList<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnumList(RET::class as KClass<Any>, it) as List<RET>
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer().list, it)
+                }
             }
         }.asDeferred()
     }
@@ -131,9 +151,15 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2), method).then {
             try {
+                @Suppress("UNCHECKED_CAST")
                 deserialize<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer(), it)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnum(RET::class as KClass<Any>, it) as RET
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer(), it)
+                }
             }
         }.asDeferred()
     }
@@ -151,9 +177,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2), method).then {
             try {
-                deserializeLists<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer().list, it)
+                deserializeList<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnumList(RET::class as KClass<Any>, it) as List<RET>
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer().list, it)
+                }
             }
         }.asDeferred()
     }
@@ -173,9 +204,15 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2, data3), method).then {
             try {
+                @Suppress("UNCHECKED_CAST")
                 deserialize<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer(), it)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnum(RET::class as KClass<Any>, it) as RET
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer(), it)
+                }
             }
         }.asDeferred()
     }
@@ -195,9 +232,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2, data3), method).then {
             try {
-                deserializeLists<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer().list, it)
+                deserializeList<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnumList(RET::class as KClass<Any>, it) as List<RET>
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer().list, it)
+                }
             }
         }.asDeferred()
     }
@@ -224,9 +266,15 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2, data3, data4), method).then {
             try {
+                @Suppress("UNCHECKED_CAST")
                 deserialize<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer(), it)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnum(RET::class as KClass<Any>, it) as RET
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer(), it)
+                }
             }
         }.asDeferred()
     }
@@ -253,9 +301,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2, data3, data4), method).then {
             try {
-                deserializeLists<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer().list, it)
+                deserializeList<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnumList(RET::class as KClass<Any>, it) as List<RET>
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer().list, it)
+                }
             }
         }.asDeferred()
     }
@@ -287,9 +340,15 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2, data3, data4, data5), method).then {
             try {
+                @Suppress("UNCHECKED_CAST")
                 deserialize<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer(), it)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnum(RET::class as KClass<Any>, it) as RET
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer(), it)
+                }
             }
         }.asDeferred()
     }
@@ -321,9 +380,14 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
                 serviceManager.getCalls()[function.toString()] ?: throw IllegalStateException("Function not specified!")
         return callAgent.jsonRpcCall(url, listOf(data1, data2, data3, data4, data5), method).then {
             try {
-                deserializeLists<RET>(it, RET::class.js.name)
-            } catch (t: NonStandardTypeException) {
-                JSON.nonstrict.parse(RET::class.serializer().list, it)
+                deserializeList<RET>(it, RET::class.js.name)
+            } catch (t: NotStandardTypeException) {
+                try {
+                    @Suppress("UNCHECKED_CAST")
+                    tryDeserializeEnumList(RET::class as KClass<Any>, it) as List<RET>
+                } catch (t: NotEnumTypeException) {
+                    JSON.nonstrict.parse(RET::class.serializer().list, it)
+                }
             }
         }.asDeferred()
     }
@@ -337,18 +401,81 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
     inline fun <reified PAR> serialize(value: PAR, serializer: KSerializer<PAR>?): String? {
         return value?.let {
             if (serializer != null) {
-                JSON.stringify(serializer, it)
+                JSON.plain.stringify(serializer, it)
             } else {
-                if (it is Enum<*>) {
-                    "\"$it\""
-                } else {
-                    try {
+                @Suppress("UNCHECKED_CAST")
+                trySerialize((PAR::class as KClass<Any>), it as Any)
+            }
+        }
+    }
+
+    /**
+     * @suppress
+     * Internal function
+     */
+    @Suppress("ComplexMethod", "TooGenericExceptionCaught", "NestedBlockDepth")
+    fun trySerialize(kClass: KClass<Any>, value: Any): String {
+        return if (value is List<*>) {
+            if (value.size > 0) {
+                when {
+                    value[0] is String ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(StringSerializer) as KSerializer<Any>, value)
+                    value[0] is Date ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(DateSerializer) as KSerializer<Any>, value)
+                    value[0] is Int ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(IntSerializer) as KSerializer<Any>, value)
+                    value[0] is Long ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(LongSerializer) as KSerializer<Any>, value)
+                    value[0] is Boolean ->
                         @Suppress("UNCHECKED_CAST")
-                        JSON.stringify((PAR::class as KClass<Any>).serializer(), it as Any)
+                        JSON.plain.stringify(ArrayListSerializer(BooleanSerializer) as KSerializer<Any>, value)
+                    value[0] is Float ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(FloatSerializer) as KSerializer<Any>, value)
+                    value[0] is Double ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(DoubleSerializer) as KSerializer<Any>, value)
+                    value[0] is Char ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(CharSerializer) as KSerializer<Any>, value)
+                    value[0] is Short ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(ShortSerializer) as KSerializer<Any>, value)
+                    value[0] is Byte ->
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(ByteSerializer) as KSerializer<Any>, value)
+                    value[0] is Enum<*> -> "[" + value.joinToString(",") { "\"$it\"" } + "]"
+                    else -> try {
+                        @Suppress("UNCHECKED_CAST")
+                        JSON.plain.stringify(ArrayListSerializer(kClass.serializer()) as KSerializer<Any>, value)
                     } catch (e: Throwable) {
-                        it.toString()
+                        try {
+                            @Suppress("UNCHECKED_CAST")
+                            JSON.plain.stringify(ArrayListSerializer(StringSerializer) as KSerializer<Any>, value)
+                        } catch (e: Throwable) {
+                            value.toString()
+                        }
                     }
                 }
+            } else {
+                "[]"
+            }
+        } else {
+            when (value) {
+                is Enum<*> -> "\"$value\""
+                is String -> value
+                is Char -> "\"$value\""
+                is Date -> "\"${value.toStringF()}\""
+                else -> try {
+                    @Suppress("UNCHECKED_CAST")
+                    JSON.plain.stringify(kClass.serializer(), value)
+                } catch (e: Throwable) {
+                    value.toString()
+                }
             }
         }
     }
@@ -357,15 +484,37 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
      * @suppress
      * Internal function
      */
-    @Suppress("UNCHECKED_CAST")
-    fun <RET> deserialize(value: String, type: String): RET {
-        return when (type) {
-            "String" -> JSON.parse(StringSerializer, value) as RET
-            "Number" -> JSON.parse(DoubleSerializer, value) as RET
-            "Long" -> JSON.parse(LongSerializer, value) as RET
-            "Boolean" -> JSON.parse(BooleanSerializer, value) as RET
-            "Char" -> JSON.parse(CharSerializer, value) as RET
-            else -> throw NonStandardTypeException(type)
+    @Suppress("UNCHECKED_CAST", "ComplexMethod")
+    fun <RET> deserialize(value: String, jsType: String): RET {
+        return when (jsType) {
+            "String" -> JSON.plain.parse(StringSerializer, value) as RET
+            "Number" -> JSON.plain.parse(DoubleSerializer, value) as RET
+            "Long" -> JSON.plain.parse(LongSerializer, value) as RET
+            "Boolean" -> JSON.plain.parse(BooleanSerializer, value) as RET
+            "BoxedChar" -> JSON.plain.parse(CharSerializer, value) as RET
+            "Short" -> JSON.plain.parse(ShortSerializer, value) as RET
+            "Date" -> JSON.plain.parse(DateSerializer, value) as RET
+            "Byte" -> JSON.plain.parse(ByteSerializer, value) as RET
+            else -> throw NotStandardTypeException(jsType)
+        }
+    }
+
+    /**
+     * @suppress
+     * Internal function
+     */
+    @Suppress("UNCHECKED_CAST", "ComplexMethod")
+    fun <RET> deserializeList(value: String, jsType: String): List<RET> {
+        return when (jsType) {
+            "String" -> JSON.plain.parse(ArrayListSerializer(StringSerializer), value) as List<RET>
+            "Number" -> JSON.plain.parse(ArrayListSerializer(DoubleSerializer), value) as List<RET>
+            "Long" -> JSON.plain.parse(ArrayListSerializer(LongSerializer), value) as List<RET>
+            "Boolean" -> JSON.plain.parse(ArrayListSerializer(BooleanSerializer), value) as List<RET>
+            "BoxedChar" -> JSON.plain.parse(ArrayListSerializer(CharSerializer), value) as List<RET>
+            "Short" -> JSON.plain.parse(ArrayListSerializer(ShortSerializer), value) as List<RET>
+            "Date" -> JSON.plain.parse(ArrayListSerializer(DateSerializer), value) as List<RET>
+            "Byte" -> JSON.plain.parse(ArrayListSerializer(ByteSerializer), value) as List<RET>
+            else -> throw NotStandardTypeException(jsType)
         }
     }
 
@@ -373,15 +522,41 @@ open class RemoteAgent<out T>(val serviceManager: ServiceManager<T>) {
      * @suppress
      * Internal function
      */
-    @Suppress("UNCHECKED_CAST")
-    fun <RET> deserializeLists(value: String, type: String): List<RET> {
-        return when (type) {
-            "String" -> JSON.parse(ArrayListSerializer(StringSerializer), value) as List<RET>
-            "Number" -> JSON.parse(ArrayListSerializer(DoubleSerializer), value) as List<RET>
-            "Long" -> JSON.parse(ArrayListSerializer(LongSerializer), value) as List<RET>
-            "Boolean" -> JSON.parse(ArrayListSerializer(BooleanSerializer), value) as List<RET>
-            "Char" -> JSON.parse(ArrayListSerializer(CharSerializer), value) as List<RET>
-            else -> throw NonStandardTypeException(type)
+    @Suppress("TooGenericExceptionCaught", "ThrowsCount")
+    fun tryDeserializeEnum(kClass: KClass<Any>, value: String): Any {
+        return try {
+            if (kClass.asDynamic().jClass.`$metadata$`.interfaces[0].name == "Enum") {
+                findEnumValue(kClass, JSON.plain.parse(StringSerializer, value)) ?: throw NotEnumTypeException()
+            } else {
+                throw NotEnumTypeException()
+            }
+        } catch (e: Throwable) {
+            throw NotEnumTypeException()
+        }
+    }
+
+    /**
+     * @suppress
+     * Internal function
+     */
+    @Suppress("TooGenericExceptionCaught", "ThrowsCount")
+    fun tryDeserializeEnumList(kClass: KClass<Any>, value: String): List<Any> {
+        return try {
+            if (kClass.asDynamic().jClass.`$metadata$`.interfaces[0].name == "Enum") {
+                JSON.plain.parse(ArrayListSerializer(StringSerializer), value).map {
+                    findEnumValue(kClass, JSON.plain.parse(StringSerializer, it)) ?: throw NotEnumTypeException()
+                }
+            } else {
+                throw NotEnumTypeException()
+            }
+        } catch (e: Throwable) {
+            throw NotEnumTypeException()
+        }
+    }
+
+    private fun findEnumValue(kClass: KClass<Any>, value: String): Any? {
+        return (kClass.asDynamic().jClass.values() as Array<Any>).find {
+            it.asDynamic().name == value
         }
     }
 }
diff --git a/src/main/kotlin/pl/treksoft/kvision/remote/Security.kt b/src/main/kotlin/pl/treksoft/kvision/remote/Security.kt
index 56141f5e..bf77a06b 100644
--- a/src/main/kotlin/pl/treksoft/kvision/remote/Security.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/remote/Security.kt
@@ -61,7 +61,6 @@ class LoginService {
 /**
  * Pac4j form login dispatcher.
  */
-@Suppress("EXPERIMENTAL_FEATURE_WARNING")
 abstract class SecurityMgr {
 
     private var isLoggedIn = false
diff --git a/src/main/kotlin/pl/treksoft/kvision/table/Table.kt b/src/main/kotlin/pl/treksoft/kvision/table/Table.kt
index 1d44633d..f78d3f84 100644
--- a/src/main/kotlin/pl/treksoft/kvision/table/Table.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/table/Table.kt
@@ -63,7 +63,7 @@ open class Table(
     /**
      * Table headers names.
      */
-    var headerNames by refreshOnUpdate(headerNames, { refreshHeaders() })
+    var headerNames by refreshOnUpdate(headerNames) { refreshHeaders() }
     /**
      * Table types.
      */
diff --git a/src/main/kotlin/pl/treksoft/kvision/types/Date.kt b/src/main/kotlin/pl/treksoft/kvision/types/Date.kt
new file mode 100644
index 00000000..b6b60d5c
--- /dev/null
+++ b/src/main/kotlin/pl/treksoft/kvision/types/Date.kt
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2017-present Robert Jaros
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package pl.treksoft.kvision.types
+
+import kotlinx.serialization.Decoder
+import kotlinx.serialization.Encoder
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.SerialDescriptor
+import kotlinx.serialization.internal.SerialClassDescImpl
+import pl.treksoft.kvision.KVManager
+import kotlin.js.Date
+
+actual typealias Date = kotlin.js.Date
+
+/**
+ * Extension function to convert String to Date with a given date format.
+ * @param format date/time format
+ * @return Date object
+ */
+@Suppress("UnsafeCastFromDynamic")
+actual fun String.toDateF(format: String): Date {
+    val result = KVManager.fecha.parse(this, format)
+    return if (result) result else Date()
+}
+
+/**
+ * Extension function to convert Date to String with a given date format.
+ * @param format date/time format
+ * @return String object
+ */
+@Suppress("UnsafeCastFromDynamic")
+actual fun Date.toStringF(format: String): String {
+    return KVManager.fecha.format(this, format)
+}
+
+object DateSerializer : KSerializer<Date> {
+    override val descriptor: SerialDescriptor = SerialClassDescImpl("kotlin.js.Date")
+
+    override fun deserialize(input: Decoder): Date {
+        return input.decodeString().toDateF()
+    }
+
+    override fun serialize(output: Encoder, obj: Date) {
+        output.encodeString(obj.toStringF())
+    }
+}
diff --git a/src/main/kotlin/pl/treksoft/kvision/types/KDate.kt b/src/main/kotlin/pl/treksoft/kvision/utils/JSON.kt
index c81ebde1..e47351ac 100644
--- a/src/main/kotlin/pl/treksoft/kvision/types/KDate.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/utils/JSON.kt
@@ -19,21 +19,21 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-package pl.treksoft.kvision.types
+package pl.treksoft.kvision.utils
 
-import pl.treksoft.kvision.utils.toDateF
-import pl.treksoft.kvision.utils.toStringF
+import kotlinx.serialization.context.SimpleModule
+import kotlinx.serialization.json.JSON
+import pl.treksoft.kvision.types.DateSerializer
 import kotlin.js.Date
 
-@Suppress("MayBeConstant", "TopLevelPropertyNaming")
-actual val KDATE_FORMAT = "YYYY-MM-DD HH:mm:ss"
+object JSON {
 
-actual fun nowDate(): KDate =
-    KDate(Date().getTime().toLong())
+    val plain = JSON().apply {
+        install(SimpleModule(Date::class, DateSerializer))
+    }
 
-actual fun String.toKDateF(format: String): KDate =
-    this.toDateF(format)?.getTime()?.toLong()?.let { KDate(it) } ?: KDate()
+    val nonstrict = JSON(strictMode = false).apply {
+        install(SimpleModule(Date::class, DateSerializer))
+    }
 
-actual fun KDate.toStringF(format: String) = this.toJS().toStringF(format)
-
-fun KDate.toJS(): kotlin.js.Date = kotlin.js.Date(this.time)
+}
diff --git a/src/main/kotlin/pl/treksoft/kvision/utils/Utils.kt b/src/main/kotlin/pl/treksoft/kvision/utils/Utils.kt
index e5f608c2..e252d672 100644
--- a/src/main/kotlin/pl/treksoft/kvision/utils/Utils.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/utils/Utils.kt
@@ -27,13 +27,11 @@ import com.lightningkite.kotlin.observable.list.ObservableList
 import kotlinx.coroutines.suspendCancellableCoroutine
 import org.w3c.files.File
 import org.w3c.files.FileReader
-import pl.treksoft.kvision.KVManager
 import pl.treksoft.kvision.core.CssSize
 import pl.treksoft.kvision.core.UNIT
 import kotlin.browser.window
 import kotlin.coroutines.resume
 import kotlin.coroutines.resumeWithException
-import kotlin.js.Date
 
 /**
  * Extension property to convert Int to CSS px units.
@@ -186,27 +184,6 @@ fun Int.toHexString(): String {
 }
 
 /**
- * Extension function to convert String to Date with a given date format.
- * @param format date/time format
- * @return Date object
- */
-@Suppress("UnsafeCastFromDynamic")
-fun String.toDateF(format: String = "YYYY-MM-DD HH:mm:ss"): Date? {
-    val result = KVManager.fecha.parse(this, format)
-    return if (result) result else null
-}
-
-/**
- * Extension function to convert Date to String with a given date format.
- * @param format date/time format
- * @return String object
- */
-@Suppress("UnsafeCastFromDynamic")
-fun Date.toStringF(format: String = "YYYY-MM-DD HH:mm:ss"): String {
-    return KVManager.fecha.format(this, format)
-}
-
-/**
  * Utility function to detect Internet Explorer 11.
  * @return true if the current browser is IE11
  */
@@ -216,7 +193,6 @@ fun isIE11(): Boolean = window.navigator.userAgent.matches("Trident\\/7\\.")
  * Suspending extension function to get file content.
  * @return file content
  */
-@Suppress("EXPERIMENTAL_FEATURE_WARNING")
 suspend fun File.getContent(): String = suspendCancellableCoroutine { cont ->
     val reader = FileReader()
     reader.onload = {
diff --git a/src/main/kotlin/pl/treksoft/kvision/window/Window.kt b/src/main/kotlin/pl/treksoft/kvision/window/Window.kt
index bdfb2c0f..ee20dc51 100644
--- a/src/main/kotlin/pl/treksoft/kvision/window/Window.kt
+++ b/src/main/kotlin/pl/treksoft/kvision/window/Window.kt
@@ -105,11 +105,11 @@ open class Window(
     /**
      * Determines if the window is resizable.
      */
-    var isResizable by refreshOnUpdate(isResizable, { checkIsResizable() })
+    var isResizable by refreshOnUpdate(isResizable) { checkIsResizable() }
     /**
      * Determines if the window is draggable.
      */
-    var isDraggable by refreshOnUpdate(isDraggable, { checkIsDraggable(); checkHeaderVisibility() })
+    var isDraggable by refreshOnUpdate(isDraggable) { checkIsDraggable(); checkHeaderVisibility() }
     /**
      * Determines if Close button is visible.
      */
@@ -201,7 +201,7 @@ open class Window(
                         }
                         kotlin.browser.window.addEventListener("mousemove", moveCallback)
                         var upCallback: ((Event) -> Unit)? = null
-                        upCallback = { _ ->
+                        upCallback = {
                             isDrag = false
                             kotlin.browser.window.removeEventListener("mousemove", moveCallback)
                             kotlin.browser.window.removeEventListener("mouseup", upCallback)
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt
index 9e4342cc..659dac9a 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/panel/RootSpec.kt
@@ -21,7 +21,6 @@
  */
 package test.pl.treksoft.kvision.panel
 
-import pl.treksoft.kvision.modal.Modal
 import pl.treksoft.kvision.panel.Root
 import test.pl.treksoft.kvision.DomSpec
 import kotlin.browser.document
@@ -40,7 +39,7 @@ class RootSpec : DomSpec {
     }
 
     @Test
-    fun getSnClass_Fluid() {
+    fun getSnClassFluid() {
         run {
             Root("test", fixed = true)
             val rootElem = document.getElementById("test")
diff --git a/src/test/kotlin/test/pl/treksoft/kvision/utils/UtilsSpec.kt b/src/test/kotlin/test/pl/treksoft/kvision/utils/UtilsSpec.kt
index 97e157bd..36217dd7 100644
--- a/src/test/kotlin/test/pl/treksoft/kvision/utils/UtilsSpec.kt
+++ b/src/test/kotlin/test/pl/treksoft/kvision/utils/UtilsSpec.kt
@@ -21,9 +21,9 @@
  */
 package test.pl.treksoft.kvision.utils
 
-import pl.treksoft.kvision.utils.toDateF
+import pl.treksoft.kvision.types.toDateF
+import pl.treksoft.kvision.types.toStringF
 import pl.treksoft.kvision.utils.toHexString
-import pl.treksoft.kvision.utils.toStringF
 import test.pl.treksoft.kvision.SimpleSpec
 import kotlin.js.Date
 import kotlin.test.Test
@@ -47,7 +47,7 @@ class UtilsSpec : SimpleSpec {
             val res = "2017-03-14 14:50:35".toDateF()
             assertEquals(
                 js("new Date(2017,2,14,14,50,35).getTime()"),
-                res?.getTime(),
+                res.getTime(),
                 "Should convert String value to Date"
             )
         }