Use constructor in GObject classes

src/preferences/BackgroundsPage.js

@@ -15,8 +15,8 @@ var BackgroundsPage = GObject.registerClass({
         'night_button',
     ],
 }, class BackgroundsPage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const settings = new Gio.Settings({ schema: 'org.gnome.desktop.background' });
 
         settings.bind('picture-uri', this._day_button, 'path', Gio.SettingsBindFlags.DEFAULT);

src/preferences/CommandsPage.js

@@ -18,8 +18,8 @@ var CommandsPage = GObject.registerClass({
         'sunset_entry',
     ],
 }, class CommandsPage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const settings = extensionUtils.getSettings(utils.getSettingsSchema('commands'));
 
         settings.bind('enabled', this._enabled_switch, 'active', Gio.SettingsBindFlags.DEFAULT);

src/preferences/SchedulePage.js

@@ -29,8 +29,8 @@ var SchedulePage = GObject.registerClass({
         'ondemand_preferences_group',
     ],
 }, class SchedulePage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const settings = extensionUtils.getSettings(utils.getSettingsSchema('time'));
         const colorSettings = new Gio.Settings({ schema: 'org.gnome.settings-daemon.plugins.color' });
         const locationSettings = new Gio.Settings({ schema: 'org.gnome.system.location' });

src/preferences/ThemesPage.js

@@ -30,8 +30,8 @@ var ThemesPage = GObject.registerClass({
         'cursor_night_variant_combo_row',
     ],
 }, class ThemesPage extends Adw.PreferencesPage {
-    _init(props = {}) {
-        super._init(props);
+    constructor(props = {}) {
+        super(props);
         const gtkSettings = extensionUtils.getSettings(utils.getSettingsSchema('gtk-variants'));
         const shellSettings = extensionUtils.getSettings(utils.getSettingsSchema('shell-variants'));
         const iconSettings = extensionUtils.getSettings(utils.getSettingsSchema('icon-variants'));