Use strict typing for properties

src/contents/ui/AuthSheet.qml

@@ -3,9 +3,11 @@ import QtQuick.Layouts 1.1
 import QtQuick.Controls 2.2 as Controls
 import org.kde.kirigami 2.5 as Kirigami
 
+import QtWebEngine 1.4
+
 Kirigami.OverlaySheet {
     id: authSheet
-    property var request
+    property AuthenticationDialogRequest request
 
     Kirigami.FormLayout {
         Layout.fillWidth: true

src/contents/ui/DownloadQuestion.qml

 import QtQuick 2.0
 import org.kde.kirigami 2.4 as Kirigami
 
+import QtWebEngine 1.1
+
 Kirigami.InlineMessage {
     id: downloadQuestion
     text: i18n("Do you want to download this file?")
     showCloseButton: false
 
-    property var download
+    property WebEngineDownloadItem download
 
     actions: [
         Kirigami.Action {

src/contents/ui/ListWebView.qml

@@ -36,7 +36,7 @@ Repeater {
     property bool privateTabsMode: false
 
     property alias currentIndex: tabsModel.currentTab
-    property var currentItem
+    property WebView currentItem
 
     property alias tabsModel: tabsModel
 

src/contents/ui/NewTabQuestion.qml

@@ -5,10 +5,10 @@ import org.kde.kirigami 2.4 as Kirigami
 Kirigami.InlineMessage {
     id: newTabQuestion
     type: Kirigami.MessageType.Warning
-    text: url? i18n("Site wants to open a new tab: \n%1", url.toString()) : ""
+    text: url ? i18n("Site wants to open a new tab: \n%1", url.toString()) : ""
     showCloseButton: true
 
-    property var url
+    property url url
 
     actions: [
         Kirigami.Action {

src/contents/ui/ShareSheet.qml

@@ -28,8 +28,8 @@ import org.kde.purpose 1.0 as Purpose
 
 Kirigami.OverlaySheet {
     id: inputSheet
-    property var url
-    property var title
+    property url url
+    property string title
 
     Purpose.AlternativesView {
         id: view

src/contents/ui/WebView.qml

@@ -107,7 +107,7 @@ WebEngineView {
 
     // Custom context menu
     Controls.Menu {
-        property var request
+        property ContextMenuRequest request
         id: contextMenu
 
         Controls.MenuItem {