diff --git a/src/plugins/qmljseditor/qmljseditor.cpp b/src/plugins/qmljseditor/qmljseditor.cpp
index f68a9d0e4a0..64861b98470 100644
--- a/src/plugins/qmljseditor/qmljseditor.cpp
+++ b/src/plugins/qmljseditor/qmljseditor.cpp
@@ -105,10 +105,7 @@ namespace Internal {
 
 QmlJSEditorWidget::QmlJSEditorWidget()
 {
-    m_outlineCombo = 0;
-    m_contextPane = 0;
     m_findReferences = new FindReferences(this);
-
     setLanguageSettingsId(QmlJSTools::Constants::QML_JS_SETTINGS_ID);
 }
 
@@ -142,7 +139,6 @@ void QmlJSEditorWidget::finalizeInitialization()
                 &m_contextPaneTimer, static_cast<void (QTimer::*)()>(&QTimer::start));
         connect(m_contextPane, &IContextPane::closed, this, &QmlJSEditorWidget::showTextMarker);
     }
-    m_oldCursorPosition = -1;
 
     connect(this->document(), &QTextDocument::modificationChanged,
             this, &QmlJSEditorWidget::modificationChanged);
diff --git a/src/plugins/qmljseditor/qmljseditor.h b/src/plugins/qmljseditor/qmljseditor.h
index 9a086e65c08..5bccf742662 100644
--- a/src/plugins/qmljseditor/qmljseditor.h
+++ b/src/plugins/qmljseditor/qmljseditor.h
@@ -117,16 +117,16 @@ private:
     QModelIndex indexForPosition(unsigned cursorPosition, const QModelIndex &rootIndex = QModelIndex()) const;
     bool hideContextPane();
 
-    QmlJSEditorDocument *m_qmlJsEditorDocument;
+    QmlJSEditorDocument *m_qmlJsEditorDocument = nullptr;
     QTimer m_updateUsesTimer; // to wait for multiple text cursor position changes
     QTimer m_updateOutlineIndexTimer;
     QTimer m_contextPaneTimer;
     QComboBox *m_outlineCombo;
     QModelIndex m_outlineModelIndex;
-    QmlJS::ModelManagerInterface *m_modelManager;
+    QmlJS::ModelManagerInterface *m_modelManager = nullptr;
 
-    QmlJS::IContextPane *m_contextPane;
-    int m_oldCursorPosition;
+    QmlJS::IContextPane *m_contextPane = nullptr;
+    int m_oldCursorPosition = -1;
 
     FindReferences *m_findReferences;
 };
diff --git a/src/plugins/qmljseditor/qmljseditordocument.cpp b/src/plugins/qmljseditor/qmljseditordocument.cpp
index 6ef9f3bdee8..732deddb4b7 100644
--- a/src/plugins/qmljseditor/qmljseditordocument.cpp
+++ b/src/plugins/qmljseditor/qmljseditordocument.cpp
@@ -455,12 +455,9 @@ namespace QmlJSEditor {
 namespace Internal {
 
 QmlJSEditorDocumentPrivate::QmlJSEditorDocumentPrivate(QmlJSEditorDocument *parent)
-    : q(parent),
-      m_semanticInfoDocRevision(-1),
-      m_semanticHighlighter(new SemanticHighlighter(parent)),
-      m_semanticHighlightingNecessary(false),
-      m_outlineModelNeedsUpdate(false),
-      m_outlineModel(new QmlOutlineModel(parent))
+    : q(parent)
+    , m_semanticHighlighter(new SemanticHighlighter(parent))
+    , m_outlineModel(new QmlOutlineModel(parent))
 {
     ModelManagerInterface *modelManager = ModelManagerInterface::instance();
 
diff --git a/src/plugins/qmljseditor/qmljseditordocument_p.h b/src/plugins/qmljseditor/qmljseditordocument_p.h
index f2cee06d762..854b81519f8 100644
--- a/src/plugins/qmljseditor/qmljseditordocument_p.h
+++ b/src/plugins/qmljseditor/qmljseditordocument_p.h
@@ -58,19 +58,19 @@ public:
     void updateOutlineModel();
 
 public:
-    QmlJSEditorDocument *q;
+    QmlJSEditorDocument *q = nullptr;
     QTimer m_updateDocumentTimer; // used to compress multiple document changes
     QTimer m_reupdateSemanticInfoTimer; // used to compress multiple libraryInfo changes
-    int m_semanticInfoDocRevision; // document revision to which the semantic info is currently updated to
+    int m_semanticInfoDocRevision = -1; // document revision to which the semantic info is currently updated to
     SemanticInfoUpdater *m_semanticInfoUpdater;
     QmlJSTools::SemanticInfo m_semanticInfo;
     QVector<QTextLayout::FormatRange> m_diagnosticRanges;
-    Internal::SemanticHighlighter *m_semanticHighlighter;
-    bool m_semanticHighlightingNecessary;
-    bool m_outlineModelNeedsUpdate;
+    Internal::SemanticHighlighter *m_semanticHighlighter = nullptr;
+    bool m_semanticHighlightingNecessary = false;
+    bool m_outlineModelNeedsUpdate = false;
     bool m_firstSementicInfo = true;
     QTimer m_updateOutlineModelTimer;
-    Internal::QmlOutlineModel *m_outlineModel;
+    Internal::QmlOutlineModel *m_outlineModel = nullptr;
 };
 
 } // Internal
diff --git a/src/plugins/qmljseditor/qmljsoutline.cpp b/src/plugins/qmljseditor/qmljsoutline.cpp
index bf37940983a..77a8c4e08a7 100644
--- a/src/plugins/qmljseditor/qmljsoutline.cpp
+++ b/src/plugins/qmljseditor/qmljsoutline.cpp
@@ -94,13 +94,10 @@ void QmlJSOutlineFilterModel::setFilterBindings(bool filterBindings)
     invalidateFilter();
 }
 
-QmlJSOutlineWidget::QmlJSOutlineWidget(QWidget *parent) :
-    TextEditor::IOutlineWidget(parent),
-    m_treeView(new QmlJSOutlineTreeView(this)),
-    m_filterModel(new QmlJSOutlineFilterModel(this)),
-    m_editor(0),
-    m_enableCursorSync(true),
-    m_blockCursorSync(false)
+QmlJSOutlineWidget::QmlJSOutlineWidget(QWidget *parent)
+    : TextEditor::IOutlineWidget(parent)
+    , m_treeView(new QmlJSOutlineTreeView(this))
+    , m_filterModel(new QmlJSOutlineFilterModel(this))
 {
     m_filterModel->setFilterBindings(false);
 
diff --git a/src/plugins/qmljseditor/qmljsoutline.h b/src/plugins/qmljseditor/qmljsoutline.h
index 81c3f56b6af..79129012d63 100644
--- a/src/plugins/qmljseditor/qmljsoutline.h
+++ b/src/plugins/qmljseditor/qmljsoutline.h
@@ -85,14 +85,14 @@ private:
     bool syncCursor();
 
 private:
-    QmlJSOutlineTreeView *m_treeView;
-    QmlJSOutlineFilterModel *m_filterModel;
-    QmlJSEditorWidget *m_editor;
+    QmlJSOutlineTreeView *m_treeView = nullptr;
+    QmlJSOutlineFilterModel *m_filterModel = nullptr;
+    QmlJSEditorWidget *m_editor = nullptr;
 
-    QAction *m_showBindingsAction;
+    QAction *m_showBindingsAction = nullptr;
 
-    bool m_enableCursorSync;
-    bool m_blockCursorSync;
+    bool m_enableCursorSync = true;
+    bool m_blockCursorSync = false;
 };
 
 class QmlJSOutlineWidgetFactory : public TextEditor::IOutlineWidgetFactory