diff --git a/src/Ease/Anonym.php b/src/Ease/Anonym.php
index b52251f..86b2b6b 100644
--- a/src/Ease/Anonym.php
+++ b/src/Ease/Anonym.php
@@ -44,6 +44,8 @@ class Anonym extends Brick implements Person
 
     /**
      * User Settings array.
+     *
+     * @phpstan-ignore missingType.iterableValue
      */
     public array $settings = [];
 
@@ -162,6 +164,8 @@ public function getPermission(string $permKeyword): ?string
 
     /**
      * Anonym cannot be signed in.
+     *
+     * @phpstan-ignore missingType.iterableValue
      */
     public function tryToLogin(array $formData): bool
     {
diff --git a/src/Ease/Brick.php b/src/Ease/Brick.php
index 3f940bf..da3447f 100644
--- a/src/Ease/Brick.php
+++ b/src/Ease/Brick.php
@@ -24,7 +24,7 @@
 
 class Brick extends Sand
 {
-    use RecordKey;
+    use recordkey;
 
     /**
      * @var string Name Column
@@ -169,6 +169,8 @@ public function setInit($init): void
 
     /**
      * Set/override object properties objectName and keyColumn.
+     *
+     * @phpstan-ignore missingType.iterableValue
      */
     public function setProperties(array $properties = []): void
     {
diff --git a/src/Ease/Functions.php b/src/Ease/Functions.php
index 03c20ca..b68c750 100644
--- a/src/Ease/Functions.php
+++ b/src/Ease/Functions.php
@@ -48,9 +48,9 @@ public static function sysFilename($path)
     /**
      * Add params to url.
      *
-     * @param string $url       originall url
-     * @param array  $addParams value to add
-     * @param bool   $override  replace already existing values ?
+     * @param string                $url       originall url
+     * @param array<string, string> $addParams value to add
+     * @param bool                  $override  replace already existing values ?
      *
      * @return string url with parameters added
      */
@@ -89,11 +89,11 @@ public static function addUrlParams($url, array $addParams, $override = false)
     /**
      * Move data field $columName from $sourceArray to $destinationArray.
      *
-     * @param array  $sourceArray      source
-     * @param array  $destinationArray destination
-     * @param string $columName        item to move
+     * @param array<mixed> $sourceArray      source
+     * @param array<mixed> $destinationArray destination
+     * @param string       $columName        item to move
      */
-    public static function divDataArray(&$sourceArray, &$destinationArray, $columName)
+    public static function divDataArray(array &$sourceArray, array &$destinationArray, $columName): bool
     {
         $result = false;
 
@@ -110,19 +110,17 @@ public static function divDataArray(&$sourceArray, &$destinationArray, $columNam
     /**
      * Test for associative array.
      *
-     * @return bool
+     * @param array<mixed> $arr
      */
-    public static function isAssoc(array $arr)
+    public static function isAssoc(array $arr): bool
     {
         return array_keys($arr) !== range(0, \count($arr) - 1);
     }
 
     /**
      * Odstraní z textu diakritiku.
-     *
-     * @param string $text
      */
-    public static function rip($text)
+    public static function rip(string $text)
     {
         $convertTable = [
             'ä' => 'a',
@@ -273,12 +271,8 @@ public static function randomNumber($minimal = null, $maximal = null)
 
     /**
      * Vrací náhodný řetězec dané délky.
-     *
-     * @param int $length
-     *
-     * @return string
      */
-    public static function randomString($length = 6)
+    public static function randomString(int $length = 6): string
     {
         return substr(str_shuffle('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'), 0, $length);
     }
@@ -340,12 +334,12 @@ public static function humanFilesize(int $filesize)
     /**
      * Reindex Array by given key.
      *
-     * @param array  $data    array to reindex
-     * @param string $indexBy one of columns in array
+     * @param array<mixed> $data    array to reindex
+     * @param string       $indexBy one of columns in array
      *
-     * @return array
+     * @return array<mixed> reindexed array
      */
-    public static function reindexArrayBy(array $data, ?string $indexBy = null)
+    public static function reindexArrayBy(array $data, string $indexBy)
     {
         $reindexedData = [];
 
@@ -455,21 +449,6 @@ public static function formatBytes($dbytes)
         return $humanReadable;
     }
 
-    /**
-     * Get configuration from constant or environment.
-     *
-     * @deprecated since version 1.40.1 use \Ease\Shared::cfg() instead
-     *
-     * @param string $constant
-     * @param mixed  $cfg      Default value
-     *
-     * @return null|bool|int|string
-     */
-    public static function cfg(/* string */ $constant, $cfg = null)
-    {
-        return \Ease\Shared::cfg($constant, $cfg);
-    }
-
     /**
      * Get All Classes in namespace.
      *
@@ -498,11 +477,9 @@ public static function classesInNamespace($namespace)
      * Load all files found for given namespace
      * (based on composer files).
      *
-     * @param string $namespace
-     *
-     * @return array of loaded files className=>filePath
+     * @return array<string, string> of loaded files className=>filePath
      */
-    public static function loadClassesInNamespace($namespace)
+    public static function loadClassesInNamespace(string $namespace): array
     {
         $loaded = [];
         $autoloader = preg_grep('/autoload\.php$/', get_included_files());
@@ -540,10 +517,8 @@ public static function loadClassesInNamespace($namespace)
      * Generates RFC 4122 compliant Version 4 UUIDs.
      *
      * @param string $data
-     *
-     * @return string
      */
-    public static function guidv4($data = null)
+    public static function guidv4($data = null): string
     {
         // Generate 16 bytes (128 bits) of random data or use the data passed into the function.
         $data ??= random_bytes(16);
diff --git a/src/Ease/Locale.php b/src/Ease/Locale.php
index 52e01cc..eb8da95 100644
--- a/src/Ease/Locale.php
+++ b/src/Ease/Locale.php
@@ -53,6 +53,8 @@ class Locale
 
     /**
      * All Language Codes => languages.
+     *
+     * @var array<string, string>
      */
     public static array $alllngs = [
         'af_NA' => 'Afrikaans (Namibia)',
@@ -523,7 +525,7 @@ public function __construct($setLocale = null, $i18n = '../i18n', $textDomain =
      *
      * @return string locale code
      */
-    public static function getPreferedLocale($allowCli = true)
+    public static function getPreferedLocale(bool $allowCli = true)
     {
         //        $locale = Locale::acceptFromHttp($_SERVER['HTTP_ACCEPT_LANGUAGE']);
         if (\PHP_SAPI === 'cli' && $allowCli) {
diff --git a/src/Ease/Logger/Regent.php b/src/Ease/Logger/Regent.php
index df316d8..7221e80 100644
--- a/src/Ease/Logger/Regent.php
+++ b/src/Ease/Logger/Regent.php
@@ -29,11 +29,15 @@ class Regent extends \Ease\Atom implements Loggingable
 {
     /**
      * Here to reach logger objects.
+     *
+     * @var array<Loggingable>
      */
     public array $loggers = [];
 
     /**
      * Hodnoty pro obarvování logu.
+     *
+     * @var array<string>
      */
     public array $logStyles = [
         'notice' => 'color: black;',
diff --git a/src/Ease/Logger/ToConsole.php b/src/Ease/Logger/ToConsole.php
index da8de6b..9c5b7a3 100644
--- a/src/Ease/Logger/ToConsole.php
+++ b/src/Ease/Logger/ToConsole.php
@@ -158,7 +158,7 @@ public function addToLog($caller, $message, $type = 'message')
      *
      * @param string $type mail|warning|error|debug|success|info
      */
-    public static function getTypeColor($type)
+    public static function getTypeColor(string $type): string
     {
         switch ($type) {
             case 'mail':                       // Envelope
diff --git a/src/Ease/Logger/ToMemory.php b/src/Ease/Logger/ToMemory.php
index a6a864e..e9f0682 100644
--- a/src/Ease/Logger/ToMemory.php
+++ b/src/Ease/Logger/ToMemory.php
@@ -73,7 +73,7 @@ class ToMemory extends \Ease\Atom implements Loggingable
     /**
      * Saves obejct instace (singleton...).
      */
-    private static $instance;
+    private static self $instance;
 
     /**
      * Pri vytvareni objektu pomoci funkce singleton (ma stejne parametry, jako
diff --git a/src/Ease/Mailer.php b/src/Ease/Mailer.php
index 5ba8574..011668b 100644
--- a/src/Ease/Mailer.php
+++ b/src/Ease/Mailer.php
@@ -128,8 +128,6 @@ public function __construct(string $emailAddress, string $mailSubject, $emailCon
     /**
      * Sets mail's text body.
      *
-     * @param string $text
-     *
      * @return bool|\Pear_Err
      */
     public function setMailBody(string $text)
diff --git a/src/Ease/Molecule.php b/src/Ease/Molecule.php
index e832345..15e149d 100644
--- a/src/Ease/Molecule.php
+++ b/src/Ease/Molecule.php
@@ -65,18 +65,18 @@ public function getObjectName()
     /**
      * Set up one of the properties by 1) array 2) ENV 3) Constant.
      *
-     * @param array  $options  array of given available properties
-     * @param string $name     name of property to set up
-     * @param string $constant load default property value from constant / ENV
+     * @param array<string, string> $options  array of given available properties
+     * @param string                $name     name of property to set up
+     * @param string                $constant load default property value from constant / ENV
      */
-    public function setupProperty($options, $name, $constant = ''): void
+    public function setupProperty(array $options, string $name, string $constant = ''): void
     {
         if (\array_key_exists($name, $options)) {
             $this->{$name} = $options[$name];
         } elseif (\array_key_exists($constant, $options)) {
             $this->{$name} = $options[$constant];
         } else { // If No values specified we must use constants or environment
-            $value = Functions::cfg($constant);
+            $value = Shared::cfg($constant);
 
             if ($constant && (empty($value) === false)) {
                 switch (\gettype($this->{$name})) {
@@ -92,19 +92,19 @@ public function setupProperty($options, $name, $constant = ''): void
                                 break;
 
                             default:
-                                $this->{$name} = (bool) Functions::cfg($constant);
+                                $this->{$name} = (bool) Shared::cfg($constant);
 
                                 break;
                         }
 
                         break;
                     case 'string':
-                        $this->{$name} = (string) Functions::cfg($constant);
+                        $this->{$name} = (string) Shared::cfg($constant);
 
                         break;
 
                     default:
-                        $this->{$name} = Functions::cfg($constant);
+                        $this->{$name} = Shared::cfg($constant);
 
                         break;
                 }
@@ -115,19 +115,19 @@ public function setupProperty($options, $name, $constant = ''): void
     /**
      * Set up one of the properties by 1) array 2) ENV 3) Constant to int value.
      *
-     * @param array  $options  array of given available properties
-     * @param string $name     name of property to set up
-     * @param string $constant load default property value from constant / ENV
+     * @param array<string, string> $options  array of given available properties
+     * @param string                $name     name of property to set up
+     * @param string                $constant load default property value from constant / ENV
      */
-    public function setupIntProperty($options, $name, $constant = ''): void
+    public function setupIntProperty(array $options, string $name, string $constant = ''): void
     {
         if (\array_key_exists($name, $options)) {
             $this->{$name} = (int) $options[$name];
         } elseif (\array_key_exists($constant, $options)) {
             $this->{$name} = (int) $options[$constant];
         } else { // If No values specified we must use constants or environment
-            if ($constant && (empty(Functions::cfg($constant)) === false)) {
-                $this->{$name} = (int) Functions::cfg($constant);
+            if ($constant && (empty(Shared::cfg($constant)) === false)) {
+                $this->{$name} = (int) Shared::cfg($constant);
             }
         }
     }
@@ -135,19 +135,19 @@ public function setupIntProperty($options, $name, $constant = ''): void
     /**
      * Set up one of the properties by 1) array 2) ENV 3) Constant to bool value.
      *
-     * @param array  $options  array of given availble properties
-     * @param string $name     name of property to set up
-     * @param string $constant load default property value from constant / ENV
+     * @param array<string, string> $options  array of given availble properties
+     * @param string                $name     name of property to set up
+     * @param string                $constant load default property value from constant / ENV
      */
-    public function setupBoolProperty($options, $name, $constant = ''): void
+    public function setupBoolProperty(array $options, string $name, string $constant = ''): void
     {
         if (\array_key_exists($name, $options)) {
             $this->{$name} = (bool) $options[$name];
         } elseif (\array_key_exists($constant, $options)) {
             $this->{$name} = (bool) $options[$constant];
         } else { // If No values specified we must use constants or environment
-            if ($constant && (empty(Functions::cfg($constant)) === false)) {
-                $this->{$name} = (bool) Functions::cfg($constant);
+            if ($constant && (empty(Shared::cfg($constant)) === false)) {
+                $this->{$name} = (bool) Shared::cfg($constant);
             }
         }
     }
diff --git a/src/Ease/Person.php b/src/Ease/Person.php
index e2eab73..c8037e0 100644
--- a/src/Ease/Person.php
+++ b/src/Ease/Person.php
@@ -28,12 +28,12 @@ public function getUserLevel();
     /**
      * Anonym nema ID.
      */
-    public function getUserID();
+    public function getUserID(): ?int;
 
     /**
      * Anonym nemá login.
      */
-    public function getUserLogin();
+    public function getUserLogin(): ?string;
 
     /**
      * Anonym nemůže být přihlášený.
diff --git a/src/Ease/Sand.php b/src/Ease/Sand.php
index c5e6195..06502bd 100644
--- a/src/Ease/Sand.php
+++ b/src/Ease/Sand.php
@@ -39,6 +39,8 @@ class Sand extends Molecule
 
     /**
      * Common object data holder.
+     *
+     * @var array<string, mixed>
      */
     public ?array $data = null;
 
@@ -90,6 +92,8 @@ public function setData(array $data, $reset = false)
 
     /**
      * Obtain data holded by object.
+     *
+     * @phpstan-ignore missingType.iterableValue
      */
     public function getData(): ?array
     {
@@ -153,10 +157,12 @@ public function unsetDataValue(string $columnName): bool
 
     /**
      * Převezme data do aktuálního pole dat.
+     *
+     * @var array<string, mixed>
      */
     public function takeData(array $data): int
     {
-        if (\is_array($this->data) && \is_array($data)) {
+        if (\is_array($this->data)) {
             $this->data = array_merge($this->data, $data);
         } else {
             $this->data = $data;
diff --git a/src/Ease/Shared.php b/src/Ease/Shared.php
index 2132a9a..6535e18 100644
--- a/src/Ease/Shared.php
+++ b/src/Ease/Shared.php
@@ -21,6 +21,8 @@
 
 namespace Ease;
 
+use Composer\InstalledVersions;
+
 /**
  * Common shared object.
  *
@@ -31,6 +33,8 @@ class Shared extends Atom
 {
     /**
      * Pole konfigurací.
+     *
+     * @var array<string, string>
      */
     public array $configuration = [];
 
@@ -48,6 +52,8 @@ class Shared extends Atom
 
     /**
      * Status messeges lives here.
+     *
+     * @var array<string>
      */
     public static array $statusMessages = [];
 
@@ -322,9 +328,9 @@ public static function &user(?Person $user = null, string $candidat = 'User', st
      * @param string $configFile      Path to file with configuration
      * @param bool   $defineConstants false to do not define constants
      *
-     * @return array full configuration array
+     * @return array<string,string> full configuration array
      */
-    public function loadConfig($configFile, $defineConstants = false)
+    public function loadConfig(string $configFile, bool $defineConstants = false)
     {
         switch (strtolower(pathinfo($configFile, \constant('PATHINFO_EXTENSION')))) {
             case 'json':
diff --git a/src/Ease/User.php b/src/Ease/User.php
index 42d2739..f998c12 100644
--- a/src/Ease/User.php
+++ b/src/Ease/User.php
@@ -85,6 +85,7 @@ class User extends Anonym
 
     /**
      * Store of user permissions.
+     * @var array<string, string>
      */
     public array $permissions = [];
 
@@ -195,7 +196,7 @@ public function getIcon(): string
     /**
      * Try to Sign in.
      *
-     * @param array $formData pole dat z přihlaš. formuláře např. $_REQUEST
+     * @param array<string> $formData data from form
      */
     public function tryToLogin(array $formData): bool
     {
diff --git a/src/Ease/RecordKey.php b/src/Ease/recordkey.php
similarity index 82%
rename from src/Ease/RecordKey.php
rename to src/Ease/recordkey.php
index 1a8a667..85a3d42 100644
--- a/src/Ease/RecordKey.php
+++ b/src/Ease/recordkey.php
@@ -23,7 +23,7 @@
 /**
  * @author Vítězslav Dvořák <info@vitexsoftware.cz>
  */
-trait RecordKey
+trait recordkey
 {
     /**
      * Key Column for Current Record.
@@ -31,11 +31,9 @@ trait RecordKey
     public string $keyColumn = 'id';
 
     /**
-     * Obtain data holded by object.
-     *
-     * @return array
+     * Obtain data holden by object.
      */
-    abstract public function getData();
+    abstract public function getData(): ?array;
 
     /**
      * Set data filed value.
@@ -45,7 +43,7 @@ abstract public function getData();
      *
      * @return bool Success
      */
-    abstract public function setDataValue(string $columnName, $value);
+    abstract public function setDataValue(string $columnName, $value): bool;
 
     /**
      * Gives you value of KEY Column.
@@ -54,11 +52,11 @@ abstract public function setDataValue(string $columnName, $value);
      *
      * @return int key column value
      */
-    public function getMyKey($data = null)
+    public function getMyKey(?array $data = [])
     {
-        return null === $data ? $this->getDataValue($this->getKeyColumn()) :
-            (\array_key_exists($this->getKeyColumn(), $data) ?
-                $data[$this->getKeyColumn()] : null);
+        return empty($data) ? $this->getDataValue($this->getKeyColumn()) :
+               (\array_key_exists($this->getKeyColumn(), $data) ?
+                   $data[$this->getKeyColumn()] : null);
     }
 
     /**
diff --git a/tests/SandTester.php b/tests/SandTester.php
index 284ae1f..7aa7e94 100644
--- a/tests/SandTester.php
+++ b/tests/SandTester.php
@@ -20,7 +20,7 @@
  */
 class SandTester extends \Ease\Sand
 {
-    use \Ease\RecordKey;
+    use \Ease\recordkey;
 
     //    /**
     //     *
diff --git a/tests/src/Ease/FunctionsTest.php b/tests/src/Ease/FunctionsTest.php
index 6a17aee..e981a8c 100644
--- a/tests/src/Ease/FunctionsTest.php
+++ b/tests/src/Ease/FunctionsTest.php
@@ -53,7 +53,7 @@ public function testAddUrlParams(): void
             'http://vitexsoftware.cz/path?a=b&id=1',
             Functions::addUrlParams(
                 'http://vitexsoftware.cz/path?a=b',
-                ['id' => 1],
+                ['id' => '1'],
                 true,
             ),
         );
@@ -61,7 +61,7 @@ public function testAddUrlParams(): void
             'http://vitexsoftware.cz:80?id=1',
             Functions::addUrlParams(
                 'http://vitexsoftware.cz:80',
-                ['id' => 1],
+                ['id' => '1'],
                 true,
             ),
         );
@@ -288,18 +288,6 @@ public function testFormatBytes(): void
         );
     }
 
-    /**
-     * @covers \Functions::cfg
-     */
-    public function testCfg(): void
-    {
-        $this->assertEquals('x', Functions::cfg('EASE_TEST', 'x'), 'default value not used');
-        putenv('EASE_TEST=a');
-        $this->assertEquals('a', Functions::cfg('EASE_TEST'), 'unexepected environment value');
-        \define('EASE_TEST', 'b');
-        $this->assertEquals('b', Functions::cfg('EASE_TEST'));
-    }
-
     /**
      * @covers \Functions::classesInNamespace
      */
diff --git a/tests/src/Ease/RecordKeyTest.php b/tests/src/Ease/recordkeyTest.php
similarity index 96%
rename from tests/src/Ease/RecordKeyTest.php
rename to tests/src/Ease/recordkeyTest.php
index 4505a78..5ca5da9 100644
--- a/tests/src/Ease/RecordKeyTest.php
+++ b/tests/src/Ease/recordkeyTest.php
@@ -18,7 +18,7 @@
  *
  * @author Vítězslav Dvořák <info@vitexsoftware.cz>
  */
-class RecordKeyTest extends \PHPUnit\Framework\TestCase
+class recordkeyTest extends \PHPUnit\Framework\TestCase
 {
     protected $object;