diff --git a/_prepend.php b/_prepend.php
deleted file mode 100644
index 920c4e2..0000000
--- a/_prepend.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-/**
- * @brief topWriter, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis, Pierre Van Glabeke
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-if (!defined('DC_RC_PATH')) {
-    return;
-}
-
-Clearbricks::lib()->autoload(['topWriter' => __DIR__ . '/inc/class.topwriter.php']);
diff --git a/_public.php b/_public.php
deleted file mode 100644
index 8ff9c3d..0000000
--- a/_public.php
+++ /dev/null
@@ -1,17 +0,0 @@
-<?php
-/**
- * @brief topWriter, a plugin for Dotclear 2
- *
- * @package Dotclear
- * @subpackage Plugin
- *
- * @author Jean-Christian Denis, Pierre Van Glabeke
- *
- * @copyright Jean-Christian Denis
- * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
- */
-if (!defined('DC_RC_PATH')) {
-    return null;
-}
-
-require __DIR__ . '/_widgets.php';
diff --git a/src/Backend.php b/src/Backend.php
new file mode 100644
index 0000000..3f0ea31
--- /dev/null
+++ b/src/Backend.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ * @brief topWriter, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis, Pierre Van Glabeke
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+declare(strict_types=1);
+
+namespace Dotclear\Plugin\topWriter;
+
+use dcCore;
+use dcNsProcess;
+
+class Backend extends dcNsProcess
+{
+    public static function init(): bool
+    {
+        static::$init = defined('DC_CONTEXT_ADMIN');
+
+        return static::$init;
+    }
+
+    public static function process(): bool
+    {
+        if (!static::$init) {
+            return false;
+        }
+
+        dcCore::app()->addBehaviors([
+            'adminDashboardItemsV2'            => [BackendBehaviors::class, 'adminDashboardItemsV2'],
+            'adminDashboardOptionsFormV2'      => [BackendBehaviors::class, 'adminDashboardOptionsFormV2'],
+            'adminAfterDashboardOptionsUpdate' => [BackendBehaviors::class, 'adminAfterDashboardOptionsUpdate'],
+            'initWidgets'                      => [Widgets::class, 'initWidgets'],
+        ]);
+
+        return true;
+    }
+}
diff --git a/src/BackendBehaviors.php b/src/BackendBehaviors.php
index e3e7d96..ca57b18 100644
--- a/src/BackendBehaviors.php
+++ b/src/BackendBehaviors.php
@@ -10,77 +10,62 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_CONTEXT_ADMIN')) {
-    return null;
-}
+declare(strict_types=1);
 
-require __DIR__ . '/_widgets.php';
+namespace Dotclear\Plugin\topWriter;
 
-# Dashboard item and user preference
-dcCore::app()->addBehavior(
-    'adminDashboardItemsV2',
-    ['topWriterAdmin', 'adminDashboardItemsV2']
-);
-dcCore::app()->addBehavior(
-    'adminDashboardOptionsFormV2',
-    ['topWriterAdmin', 'adminDashboardOptionsFormV2']
-);
-dcCore::app()->addBehavior(
-    'adminAfterDashboardOptionsUpdate',
-    ['topWriterAdmin', 'adminAfterDashboardOptionsUpdate']
-);
+use ArrayObject;
+use dcCore;
+use form;
+use html;
 
 /**
  * @ingroup DC_PLUGIN_TOPWRITER
  * @brief Display most active users - admin methods.
  * @since 2.6
  */
-class topWriterAdmin
+class BackendBehaviors
 {
-    public static function adminDashboardItemsV2($__dashboard_items)
+    public static function adminDashboardItemsV2(ArrayObject $__dashboard_items): void
     {
         $pref = self::setDefaultPref();
 
         # top posts
         if ($pref['topWriterPostsItems']) {
-            $lines = topWriter::posts($pref['topWriterPostsPeriod'], $pref['topWriterPostsLimit']);
-            if (empty($lines)) {
-                return null;
-            }
+            $lines = Utils::posts($pref['topWriterPostsPeriod'], $pref['topWriterPostsLimit']);
+            if (!empty($lines)) {
+                $li = [];
+                foreach ($lines as $k => $line) {
+                    $li[] = sprintf('<li><strong>%s</strong> %s (%s)</li>', $k, $line['author'], $line['count']);
+                }
 
-            $li = [];
-            foreach ($lines as $k => $line) {
-                $li[] = sprintf('<li><strong>%s</strong> %s (%s)</li>', $k, $line['author'], $line['count']);
+                # Display
+                $__dashboard_items[0][] = '<div class="box small" id="topWriterPostsItems">' .
+                '<h3>' . html::escapeHTML(__('Top writer: entries')) . '</h3>' .
+                '<ul>' . implode('', $li) . '</ul>' .
+                '</div>';
             }
-
-            # Display
-            $__dashboard_items[0][] = '<div class="box small" id="topWriterPostsItems">' .
-            '<h3>' . html::escapeHTML(__('Top writer: entries')) . '</h3>' .
-            '<ul>' . implode('', $li) . '</ul>' .
-            '</div>';
         }
 
         # top comments
         if ($pref['topWriterCommentsItems']) {
-            $lines = topWriter::comments($pref['topWriterCommentsPeriod'], $pref['topWriterCommentsLimit']);
-            if (empty($lines)) {
-                return null;
-            }
+            $lines = Utils::comments($pref['topWriterCommentsPeriod'], $pref['topWriterCommentsLimit']);
+            if (!empty($lines)) {
+                $li = [];
+                foreach ($lines as $k => $line) {
+                    $li[] = sprintf('<li><strong>%s</strong> %s (%s)</li>', $k, $line['author'], $line['count']);
+                }
 
-            $li = [];
-            foreach ($lines as $k => $line) {
-                $li[] = sprintf('<li><strong>%s</strong> %s (%s)</li>', $k, $line['author'], $line['count']);
+                # Display
+                $__dashboard_items[0][] = '<div class="box small" id="topWriterCommentsItems">' .
+                '<h3>' . html::escapeHTML(__('Top writer: comments')) . '</h3>' .
+                '<ul>' . implode('', $li) . '</ul>' .
+                '</div>';
             }
-
-            # Display
-            $__dashboard_items[0][] = '<div class="box small" id="topWriterCommentsItems">' .
-            '<h3>' . html::escapeHTML(__('Top writer: comments')) . '</h3>' .
-            '<ul>' . implode('', $li) . '</ul>' .
-            '</div>';
         }
     }
 
-    public static function adminDashboardOptionsFormV2()
+    public static function adminDashboardOptionsFormV2(): void
     {
         $pref = self::setDefaultPref();
 
@@ -91,7 +76,7 @@ class topWriterAdmin
         form::checkbox('topWriterPostsItems', 1, $pref['topWriterPostsItems']) . ' ' .
         __('Show') . '</label></p>' .
         '<p><label class="classic" for="topWriterPostsPeriod">' . __('Period:') . ' </label>' .
-        form::combo('topWriterPostsPeriod', topWriter::periods(), $pref['topWriterPostsPeriod']) . '</p>' .
+        form::combo('topWriterPostsPeriod', Utils::periods(), $pref['topWriterPostsPeriod']) . '</p>' .
         '<p><label class="classic" for="topWriterPostsLimit">' . __('Limit:') . ' </label>' .
         form::number('topWriterPostsLimit', ['min' => 1, 'max' => 20, 'default' => $pref['topWriterPostsLimit']]) . '</p>' .
         '</div>' .
@@ -102,86 +87,86 @@ class topWriterAdmin
         form::checkbox('topWriterCommentsItems', 1, $pref['topWriterCommentsItems']) . ' ' .
         __('Show') . '</label></p>' .
         '<p><label class="classic" for="topWriterCommentsPeriod">' . __('Period:') . ' </label>' .
-        form::combo('topWriterCommentsPeriod', topWriter::periods(), $pref['topWriterCommentsPeriod']) . '</p>' .
+        form::combo('topWriterCommentsPeriod', Utils::periods(), $pref['topWriterCommentsPeriod']) . '</p>' .
         '<p><label class="classic" for="topWriterCommentsLimit">' . __('Limit:') . ' </label>' .
         form::number('topWriterCommentsLimit', ['min' => 1, 'max' => 20, 'default' => $pref['topWriterCommentsLimit']]) . '</p>' .
         '</div>';
     }
 
-    public static function adminAfterDashboardOptionsUpdate($user_id)
+    public static function adminAfterDashboardOptionsUpdate(?string $user_id): void
     {
-        dcCore::app()->auth->user_prefs->dashboard->put(
+        dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterPostsItems',
             !empty($_POST['topWriterPostsItems']),
             'boolean'
         );
-        dcCore::app()->auth->user_prefs->dashboard->put(
+        dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterPostsPeriod',
             (string) $_POST['topWriterPostsPeriod'],
             'string'
         );
-        dcCore::app()->auth->user_prefs->dashboard->put(
+        dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterPostsLimit',
             (int) $_POST['topWriterPostsLimit'],
             'integer'
         );
 
-        dcCore::app()->auth->user_prefs->dashboard->put(
+        dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterCommentsItems',
             !empty($_POST['topWriterCommentsItems']),
             'boolean'
         );
-        dcCore::app()->auth->user_prefs->dashboard->put(
+        dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterCommentsPeriod',
             (string) $_POST['topWriterCommentsPeriod'],
             'string'
         );
-        dcCore::app()->auth->user_prefs->dashboard->put(
+        dcCore::app()->auth->user_prefs->get('dashboard')->put(
             'topWriterCommentsLimit',
             (int) $_POST['topWriterCommentsLimit'],
             'integer'
         );
     }
 
-    private static function setDefaultPref()
+    private static function setDefaultPref(): array
     {
-        if (!dcCore::app()->auth->user_prefs->dashboard->prefExists('topWriterPostsItems')) {
-            dcCore::app()->auth->user_prefs->dashboard->put(
+        if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterPostsItems')) {
+            dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterPostsItems',
                 false,
                 'boolean'
             );
         }
-        if (!dcCore::app()->auth->user_prefs->dashboard->prefExists('topWriterPostsPeriod')) {
-            dcCore::app()->auth->user_prefs->dashboard->put(
+        if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterPostsPeriod')) {
+            dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterPostsPeriod',
                 'month',
                 'string'
             );
         }
-        if (!dcCore::app()->auth->user_prefs->dashboard->prefExists('topWriterPostsLimit')) {
-            dcCore::app()->auth->user_prefs->dashboard->put(
+        if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterPostsLimit')) {
+            dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterPostsLimit',
                 10,
                 'integer'
             );
         }
-        if (!dcCore::app()->auth->user_prefs->dashboard->prefExists('topWriterCommentsItems')) {
-            dcCore::app()->auth->user_prefs->dashboard->put(
+        if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterCommentsItems')) {
+            dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterCommentsItems',
                 false,
                 'boolean'
             );
         }
-        if (!dcCore::app()->auth->user_prefs->dashboard->prefExists('topWriterCommentsPeriod')) {
-            dcCore::app()->auth->user_prefs->dashboard->put(
+        if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterCommentsPeriod')) {
+            dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterCommentsPeriod',
                 'month',
                 'string'
             );
         }
-        if (!dcCore::app()->auth->user_prefs->dashboard->prefExists('topWriterCommentsLimit')) {
-            dcCore::app()->auth->user_prefs->dashboard->put(
+        if (!dcCore::app()->auth->user_prefs->get('dashboard')->prefExists('topWriterCommentsLimit')) {
+            dcCore::app()->auth->user_prefs->get('dashboard')->put(
                 'topWriterCommentsLimit',
                 10,
                 'integer'
@@ -189,12 +174,12 @@ class topWriterAdmin
         }
 
         return [
-            'topWriterPostsItems'     => dcCore::app()->auth->user_prefs->dashboard->get('topWriterPostsItems'),
-            'topWriterPostsPeriod'    => dcCore::app()->auth->user_prefs->dashboard->get('topWriterPostsPeriod'),
-            'topWriterPostsLimit'     => dcCore::app()->auth->user_prefs->dashboard->get('topWriterPostsLimit') ?? 10,
-            'topWriterCommentsItems'  => dcCore::app()->auth->user_prefs->dashboard->get('topWriterCommentsItems'),
-            'topWriterCommentsPeriod' => dcCore::app()->auth->user_prefs->dashboard->get('topWriterCommentsPeriod'),
-            'topWriterCommentsLimit'  => dcCore::app()->auth->user_prefs->dashboard->get('topWriterCommentsLimit') ?? 10,
+            'topWriterPostsItems'     => dcCore::app()->auth->user_prefs->get('dashboard')->get('topWriterPostsItems'),
+            'topWriterPostsPeriod'    => dcCore::app()->auth->user_prefs->get('dashboard')->get('topWriterPostsPeriod'),
+            'topWriterPostsLimit'     => dcCore::app()->auth->user_prefs->get('dashboard')->get('topWriterPostsLimit') ?? 10,
+            'topWriterCommentsItems'  => dcCore::app()->auth->user_prefs->get('dashboard')->get('topWriterCommentsItems'),
+            'topWriterCommentsPeriod' => dcCore::app()->auth->user_prefs->get('dashboard')->get('topWriterCommentsPeriod'),
+            'topWriterCommentsLimit'  => dcCore::app()->auth->user_prefs->get('dashboard')->get('topWriterCommentsLimit') ?? 10,
         ];
     }
 }
diff --git a/src/Frontend.php b/src/Frontend.php
new file mode 100644
index 0000000..6e10052
--- /dev/null
+++ b/src/Frontend.php
@@ -0,0 +1,41 @@
+<?php
+/**
+ * @brief topWriter, a plugin for Dotclear 2
+ *
+ * @package Dotclear
+ * @subpackage Plugin
+ *
+ * @author Jean-Christian Denis, Pierre Van Glabeke
+ *
+ * @copyright Jean-Christian Denis
+ * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
+ */
+declare(strict_types=1);
+
+namespace Dotclear\Plugin\topWriter;
+
+use dcCore;
+use dcNsProcess;
+
+class Frontend extends dcNsProcess
+{
+    public static function init(): bool
+    {
+        static::$init = true;
+
+        return static::$init;
+    }
+
+    public static function process(): bool
+    {
+        if (!static::$init) {
+            return false;
+        }
+
+        dcCore::app()->addBehaviors([
+            'initWidgets' => [Widgets::class, 'initWidgets'],
+        ]);
+
+        return true;
+    }
+}
diff --git a/src/Utils.php b/src/Utils.php
index f21e80b..402ad07 100644
--- a/src/Utils.php
+++ b/src/Utils.php
@@ -10,17 +10,23 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_RC_PATH')) {
-    return;
-}
+declare(strict_types=1);
 
-class topWriter
+namespace Dotclear\Plugin\topWriter;
+
+use dcAuth;
+use dcBlog;
+use dcCore;
+use dcUtils;
+use dt;
+
+class Utils
 {
-    public static function posts(string $period, int $limit, bool $sort_desc = true)
+    public static function posts(string $period, int $limit, bool $sort_desc = true): array
     {
         $req = 'SELECT COUNT(*) AS count, U.user_id ' .
-            'FROM ' . dcCore::app()->prefix . 'post P ' .
-            'INNER JOIN ' . dcCore::app()->prefix . 'user U ON U.user_id = P.user_id ' .
+            'FROM ' . dcCore::app()->prefix . dcBlog::POST_TABLE_NAME . ' P ' .
+            'INNER JOIN ' . dcCore::app()->prefix . dcAuth::USER_TABLE_NAME . ' U ON U.user_id = P.user_id ' .
             "WHERE blog_id='" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' " .
             'AND post_status=1 AND user_status=1 ' .
             self::period('post_dt', $period) .
@@ -30,16 +36,14 @@ class topWriter
 
         $rs = dcCore::app()->con->select($req);
         if ($rs->isEmpty()) {
-            return null;
+            return [];
         }
 
-        dcCore::app()->blog->settings->addNamespace('authormode');
-
         $res = [];
         $i   = 0;
         while ($rs->fetch()) {
             $user = dcCore::app()->con->select(
-                'SELECT * FROM ' . dcCore::app()->prefix . "user WHERE user_id='" . $rs->user_id . "' "
+                'SELECT * FROM ' . dcCore::app()->prefix . dcAuth::USER_TABLE_NAME . " WHERE user_id='" . $rs->user_id . "' "
             );
             if ($user->isEmpty()) {
                 continue;
@@ -56,7 +60,7 @@ class topWriter
             }
 
             $i++;
-            if (dcCore::app()->blog->settings->authormode->authormode_active) {
+            if (dcCore::app()->blog->settings->get('authormode')->get('authormode_active')) {
                 $res[$i]['author_link'] = '<a href="' .
                     dcCore::app()->blog->url . dcCore::app()->url->getBase('author') . '/' . $user->user_id . '" ' .
                     'title="' . __('Author posts') . '">' . $author . '</a>';
@@ -69,21 +73,17 @@ class topWriter
             if ($rs->count == 0) {
                 $res[$i]['count'] = __('no entries');
             } else {
-                $res[$i]['count'] = sprintf(__('one entry', '%s entries', $rs->count), $rs->count);
+                $res[$i]['count'] = sprintf(__('one entry', '%s entries', (int) $rs->count), $rs->count);
             }
         }
 
-        if (!$i) {
-            return null;
-        }
-
-        return $res;
+        return $i ? $res : [];
     }
 
-    public static function comments(string $period, int $limit, bool $sort_desc = true, $exclude = false)
+    public static function comments(string $period, int $limit, bool $sort_desc = true, bool $exclude = false): array
     {
         $req = 'SELECT COUNT(*) AS count, comment_email ' .
-        'FROM ' . dcCore::app()->prefix . 'post P,  ' . dcCore::app()->prefix . 'comment C ' .
+        'FROM ' . dcCore::app()->prefix . dcBlog::POST_TABLE_NAME . ' P,  ' . dcCore::app()->prefix . dcBlog::COMMENT_TABLE_NAME . ' C ' .
         'WHERE P.post_id=C.post_id ' .
         "AND blog_id='" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' " .
         'AND post_status=1 AND comment_status=1 ' .
@@ -92,8 +92,8 @@ class topWriter
         if ($exclude) {
             $req .= 'AND comment_email NOT IN (' .
             ' SELECT U.user_email ' .
-            ' FROM ' . dcCore::app()->prefix . 'user U' .
-            ' INNER JOIN ' . dcCore::app()->prefix . 'post P ON P.user_id = U.user_id ' .
+            ' FROM ' . dcCore::app()->prefix . dcAuth::USER_TABLE_NAME . ' U' .
+            ' INNER JOIN ' . dcCore::app()->prefix . dcBlog::POST_TABLE_NAME . ' P ON P.user_id = U.user_id ' .
             " WHERE blog_id='" . dcCore::app()->con->escape(dcCore::app()->blog->id) . "' " .
             ' GROUP BY U.user_email) ';
         }
@@ -104,14 +104,14 @@ class topWriter
 
         $rs = dcCore::app()->con->select($req);
         if ($rs->isEmpty()) {
-            return null;
+            return [];
         }
 
         $res = [];
         $i   = 0;
         while ($rs->fetch()) {
             $user = dcCore::app()->con->select(
-                'SELECT * FROM ' . dcCore::app()->prefix . 'comment ' .
+                'SELECT * FROM ' . dcCore::app()->prefix . dcBlog::COMMENT_TABLE_NAME . ' ' .
                 "WHERE comment_email='" . $rs->comment_email . "' " .
                 'ORDER BY comment_dt DESC'
             );
@@ -131,15 +131,11 @@ class topWriter
             if ($rs->count == 0) {
                 $res[$i]['count'] = __('no comments');
             } else {
-                $res[$i]['count'] = sprintf(__('one comment', '%s comments', $rs->count), $rs->count);
+                $res[$i]['count'] = sprintf(__('one comment', '%s comments', (int) $rs->count), $rs->count);
             }
         }
 
-        if (!$i) {
-            return null;
-        }
-
-        return $res;
+        return $i ? $res : [];
     }
 
     private static function period(string $field, string $period): string
@@ -174,7 +170,7 @@ class topWriter
         return "AND $field > TIMESTAMP '" . dt::str($pattern, time() - $time) . "' ";
     }
 
-    public static function periods()
+    public static function periods(): array
     {
         return [
             __('last day')      => 'day',
diff --git a/src/Widgets.php b/src/Widgets.php
index 5da16c0..4fd4d3c 100644
--- a/src/Widgets.php
+++ b/src/Widgets.php
@@ -10,22 +10,25 @@
  * @copyright Jean-Christian Denis
  * @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
  */
-if (!defined('DC_RC_PATH')) {
-    return null;
-}
+declare(strict_types=1);
 
-dcCore::app()->addBehavior('initWidgets', ['topWriterWidget', 'init']);
+namespace Dotclear\Plugin\topWriter;
 
-class topWriterWidget
+use dcCore;
+use Dotclear\Plugin\widgets\WidgetsStack;
+use Dotclear\Plugin\widgets\WidgetsElement;
+use html;
+
+class Widgets
 {
-    public static function init($w)
+    public static function initWidgets(WidgetsStack $w): void
     {
         #Top comments widget
         $w
             ->create(
                 'topcom',
                 __('Top writer: comments'),
-                ['topWriterWidget', 'topCom'],
+                [self::class, 'topComWidget'],
                 null,
                 __('List users who write more comments')
             )
@@ -41,7 +44,7 @@ class topWriterWidget
                 __('Period:'),
                 'year',
                 'combo',
-                topWriter::periods()
+                Utils::periods()
             )
             ->setting(
                 'sort',
@@ -75,7 +78,7 @@ class topWriterWidget
             ->create(
                 'toppost',
                 __('Top writer: entries'),
-                ['topWriterWidget', 'topPost'],
+                [self::class, 'topPostWidget'],
                 null,
                 __('List users who write more posts')
             )
@@ -91,7 +94,7 @@ class topWriterWidget
                 __('Period:'),
                 'year',
                 'combo',
-                topWriter::periods()
+                Utils::periods()
             )
             ->setting(
                 'sort',
@@ -115,19 +118,19 @@ class topWriterWidget
             ->addOffline();
     }
 
-    public static function topCom($w)
+    public static function topComWidget(WidgetsElement $w): string
     {
         if ($w->offline || !$w->checkHomeOnly(dcCore::app()->url->type)) {
-            return null;
+            return '';
         }
 
-        $lines = topWriter::comments($w->period, $w->limit, $w->sort == 'desc', $w->exclude);
+        $lines = Utils::comments($w->period, (int) $w->limit, $w->sort == 'desc', (bool) $w->exclude);
         if (empty($lines)) {
-            return null;
+            return '';
         }
 
         return $w->renderDiv(
-            $w->content_only,
+            (bool) $w->content_only,
             'topcomments ' . $w->class,
             '',
             ($w->title ? $w->renderTitle(html::escapeHTML($w->title)) : '') .
@@ -135,19 +138,19 @@ class topWriterWidget
         );
     }
 
-    public static function topPost($w)
+    public static function topPostWidget(WidgetsElement $w): string
     {
         if ($w->offline || !$w->checkHomeOnly(dcCore::app()->url->type)) {
-            return null;
+            return '';
         }
 
-        $lines = topWriter::posts($w->period, $w->limit, $w->sort == 'desc');
+        $lines = Utils::posts($w->period, (int) $w->limit, $w->sort == 'desc');
         if (empty($lines)) {
-            return null;
+            return '';
         }
 
         return $w->renderDiv(
-            $w->content_only,
+            (bool) $w->content_only,
             'topentries ' . $w->class,
             '',
             ($w->title ? $w->renderTitle(html::escapeHTML($w->title)) : '') .
@@ -155,7 +158,7 @@ class topWriterWidget
         );
     }
 
-    private static function lines($lines, $id, $text)
+    private static function lines(array $lines, string $id, string $text): array
     {
         $li = [];
         foreach ($lines as $k => $line) {