diff --git a/src/CmsPluginPanel.php b/src/CmsPluginPanel.php
index 942bb1e..f8d20ff 100644
--- a/src/CmsPluginPanel.php
+++ b/src/CmsPluginPanel.php
@@ -98,11 +98,11 @@ public function getPanel(): string
 		$components = '';
 		$componentList = $this->pluginManager->getComponentsInfo();
 		usort($componentList, static function (array $a, array $b): int {
-			if (($a['position'] ?? 50) === ($b['position'] ?? 50)) {
+			if ($a['position'] === $b['position']) {
 				return $a['implements'] === $b['implements'] ? 1 : -1;
 			}
 
-			return ($a['position'] ?? 50) < ($b['position'] ?? 50) ? 1 : -1;
+			return $a['position'] < $b['position'] ? 1 : -1;
 		});
 		foreach ($componentList as $component) {
 			$matchPlugin = $pluginServiceType === $component['implements'];
@@ -126,7 +126,7 @@ public function getPanel(): string
 					? '<td style="background:#BDE678">' . htmlspecialchars($component['view']) . '</td>'
 					: '<td>' . htmlspecialchars($component['view']) . '</td>'
 				)
-				. '<td>' . htmlspecialchars((string) ($component['position'] ?? '???'), ENT_QUOTES) . '</td>'
+				. '<td>' . htmlspecialchars((string) $component['position'], ENT_QUOTES) . '</td>'
 				. '<td>' .
 				(function (array $params): string {
 					$return = '';
@@ -150,7 +150,7 @@ public function getPanel(): string
 					}
 
 					return $return;
-				})($component['params'] ?? [])
+				})($component['params'])
 				. '</td>'
 				. '</tr>';
 		}
diff --git a/src/Component/VueComponent.php b/src/Component/VueComponent.php
index 19aa5bd..2d842d8 100644
--- a/src/Component/VueComponent.php
+++ b/src/Component/VueComponent.php
@@ -25,15 +25,15 @@ class VueComponent implements PluginComponent
 
 
 	/**
-	 * @param mixed[] $config
+	 * @param array{key: string, name: string, implements: class-string, componentClass: class-string, view: string, source: string, position?: int, tab?: string, params?: array<int|string, mixed>} $config
 	 */
 	public function __construct(array $config)
 	{
-		$this->key = (string) $config['key'];
-		$this->name = (string) $config['name'];
-		$this->tab = (string) ($config['tab'] ?? $config['key']);
-		$this->source = (string) $config['source'];
-		$this->position = (int) ($config['position'] ?? 50);
+		$this->key = $config['key'];
+		$this->name = $config['name'];
+		$this->tab = $config['tab'] ?? $config['key'];
+		$this->source = $config['source'];
+		$this->position = $config['position'] ?? 50;
 
 		$parameters = [];
 		foreach ($config['params'] ?? [] as $parameterName => $parameterValue) {
@@ -42,16 +42,20 @@ public function __construct(array $config)
 				$parameterValue = null;
 			}
 			if (\is_string($parameterName) === false) {
-				throw new \InvalidArgumentException(
-					'Component "' . $this->key . '": Parameter "' . $parameterName . '" must be '
-					. 'a string, but "' . get_debug_type($parameterName) . '" given.',
-				);
+				throw new \InvalidArgumentException(sprintf(
+					'Component "%s": Parameter "%s" must be a string, but "%s" given.',
+					$this->key,
+					$parameterName,
+					get_debug_type($parameterName),
+				));
 			}
 			if ($parameterValue !== null && is_scalar($parameterValue) === false) {
-				throw new \InvalidArgumentException(
-					'Component "' . $this->key . '": Parameter "' . $parameterName . '" value '
-					. 'must be scalar, but type "' . get_debug_type($parameterValue) . '" given.',
-				);
+				throw new \InvalidArgumentException(sprintf(
+					'Component "%s": Parameter "%s" value must be scalar, but type "%s" given.',
+					$this->key,
+					$parameterName,
+					get_debug_type($parameterValue),
+				));
 			}
 			$parameters[$parameterName] = $parameterValue;
 		}
diff --git a/src/PluginComponentExtension.php b/src/PluginComponentExtension.php
index d829325..27a2f49 100644
--- a/src/PluginComponentExtension.php
+++ b/src/PluginComponentExtension.php
@@ -55,13 +55,13 @@ public function beforeCompile(): void
 			return;
 		}
 
-		/** @var mixed[] $config */
+		/** @var array<string|int, array<string, mixed>> $config */
 		$config = $this->getConfig();
 
 		$components = [];
 		foreach ($config as $key => $component) {
 			if (\is_string($key) === false) {
-				throw new \RuntimeException('Component name must be string, but "' . $key . '" given.');
+				throw new \RuntimeException('Component name must be string, but "' . $key . '" (' . get_debug_type($key) . ') given.');
 			}
 			if (isset($component['name'], $component['implements'], $component['view'], $component['source']) === false) {
 				throw new \RuntimeException(
@@ -112,8 +112,13 @@ public function beforeCompile(): void
 					}
 				} catch (\ReflectionException $e) {
 					throw new \RuntimeException(
-						'Component "' . $key . '": Component class "' . $componentClass . '" is broken: ' . $e->getMessage(),
-						$e->getCode(),
+						sprintf(
+							'Component "%s": Component class "%s" is broken: %s',
+							$key,
+							$componentClass,
+							$e->getMessage(),
+						),
+						500,
 						$e,
 					);
 				}
@@ -138,8 +143,10 @@ public function beforeCompile(): void
 					. 'path "' . $source . '" given.',
 				);
 			}
+			$componentParameters = $component['params'] ?? [];
+			assert(is_array($componentParameters));
 			$params = [];
-			foreach ($component['params'] ?? [] as $parameter) {
+			foreach ($componentParameters as $parameter) {
 				if (is_array($parameter) && count($parameter) === 1) {
 					$parameterName = array_keys($parameter)[0] ?? throw new \RuntimeException('Broken parameter.');
 					$parameterValue = array_values($parameter)[0] ?? null;
@@ -170,15 +177,21 @@ public function beforeCompile(): void
 				}
 				$params[Strings::firstLower((string) $parameterName)] = $parameterValue;
 			}
+			$tab = $component['tab'] ?? $key;
+			$position = $component['position'] ?? 1;
+			$componentClass = $component['componentClass'] ?? VueComponent::class;
+			assert(is_string($tab));
+			assert(is_int($position));
+			assert(is_string($componentClass));
 			$components[] = (new ComponentDIDefinition(
 				key: $key,
 				name: trim(trim($name) === '' ? $key : $name),
 				implements: $implements,
-				componentClass: $component['componentClass'] ?? VueComponent::class,
+				componentClass: $componentClass,
 				view: $view,
 				source: $source,
-				position: (int) ($component['position'] ?? 1),
-				tab: (string) ($component['tab'] ?? $key),
+				position: $position,
+				tab: $tab,
 				params: $params,
 			))->toArray();
 		}
diff --git a/src/PluginManager.php b/src/PluginManager.php
index 586b1a2..bebf7c3 100644
--- a/src/PluginManager.php
+++ b/src/PluginManager.php
@@ -14,13 +14,13 @@
 
 final class PluginManager
 {
-	/** @var array<int, mixed> */
+	/** @var array<int, array{key: string, name: string, implements: class-string, componentClass: class-string, view: string, source: string, position: int, tab: string, params: array<int|string, string|int|float|bool|null>}> */
 	private array $components = [];
 
-	/** @var array<int, mixed>|null */
+	/** @var array<class-string<Plugin>, array{service: string, type: class-string<Plugin>, name: string, realName: string, baseEntity: string|null, label: string, basePath: string, priority: int, icon: string|null, roles: array<int, string>, privileges: array<int, string>, menuItem: array<string, string|null>|null}>|null */
 	private ?array $pluginInfo = null;
 
-	/** @var string[] */
+	/** @var array<string, string> */
 	private array $baseEntityToPlugin;
 
 	/** @var string[] */
@@ -43,13 +43,14 @@ public function __construct(
 	/**
 	 * Effective all Plugin services setter.
 	 *
-	 * @param string[] $pluginServices
+	 * @param array<int, string> $pluginServices
 	 * @internal use in DIC
 	 */
 	public function setPluginServices(array $pluginServices): void
 	{
+		/** @var array{hash: string, plugins: array<class-string<Plugin>, array{service: string, type: class-string<Plugin>, name: string, realName: string, baseEntity: string|null, label: string, basePath: string, priority: int, icon: string|null, roles: array<int, string>, privileges: array<int, string>, menuItem: array<string, string|null>|null}>, baseEntityToPlugin: array<class-string, class-string<Plugin>>, baseEntitySimpleToPlugin: array<string, class-string<Plugin>>, nameToType: array<string, class-string>}|null $cache */
 		$cache = $this->cache->load('plugin-info');
-		if ($cache === null || ((string) ($cache['hash'] ?? '')) !== $this->getPluginServicesHash($pluginServices)) {
+		if ($cache === null || $cache['hash'] !== $this->getPluginServicesHash($pluginServices)) {
 			[$plugins, $baseEntityToPlugin, $baseEntitySimpleToPlugin] = $this->processPluginInfo($pluginServices);
 
 			$pluginNameToType = [];
@@ -57,13 +58,14 @@ public function setPluginServices(array $pluginServices): void
 				$pluginNameToType[$plugin['name']] = $plugin['type'];
 			}
 
-			$this->cache->save('plugin-info', $cache = [
+			$cache = [
 				'hash' => $this->getPluginServicesHash($pluginServices),
 				'plugins' => $plugins,
 				'baseEntityToPlugin' => $baseEntityToPlugin,
 				'baseEntitySimpleToPlugin' => $baseEntitySimpleToPlugin,
 				'nameToType' => $pluginNameToType,
-			]);
+			];
+			$this->cache->save('plugin-info', $cache);
 		}
 
 		$this->pluginInfo = $cache['plugins'];
@@ -95,7 +97,11 @@ public function getComponents(Plugin|PluginInfoEntity|string $plugin, ?string $v
 			try {
 				$baseEntityExist = class_exists($baseEntity);
 			} catch (\Throwable $e) {
-				throw new \RuntimeException('Base entity "' . $baseEntity . '" is broken: ' . $e->getMessage(), $e->getCode(), $e);
+				throw new \RuntimeException(
+					sprintf('Base entity "%s" is broken: %s', $baseEntity, $e->getMessage()),
+					500,
+					$e,
+				);
 			}
 			if ($baseEntityExist === false) {
 				throw new \InvalidArgumentException('Entity class "' . $baseEntity . '" does not exist or is not autoloadable.');
@@ -137,7 +143,7 @@ public function getComponents(Plugin|PluginInfoEntity|string $plugin, ?string $v
 
 
 	/**
-	 * @param mixed[] $components
+	 * @param array<int, array{key: string, name: string, implements: class-string, componentClass: class-string, view: string, source: string, position: int, tab: string, params: array<int|string, string|int|float|bool|null>}> $components
 	 * @internal use in DIC
 	 */
 	public function addComponents(array $components): void
@@ -147,7 +153,7 @@ public function addComponents(array $components): void
 
 
 	/**
-	 * @param mixed[] $component
+	 * @param array{key: string, name: string, implements: class-string, componentClass: class-string, view: string, source: string, position: int, tab: string, params: array<int|string, string|int|float|bool|null>} $component
 	 * @internal use in DIC
 	 */
 	public function addComponent(array $component): void
@@ -157,7 +163,7 @@ public function addComponent(array $component): void
 
 
 	/**
-	 * @return mixed[]
+	 * @return array<int, array{key: string, name: string, implements: class-string, componentClass: class-string, view: string, source: string, position: int, tab: string, params: array<int|string, string|int|float|bool|null>}>
 	 */
 	public function getComponentsInfo(): array
 	{
@@ -227,7 +233,7 @@ public function getPluginByType(string $type): Plugin
 
 
 	/**
-	 * @return mixed[]
+	 * @return array<class-string<Plugin>, array{service: string, type: class-string<Plugin>, name: string, realName: string, baseEntity: string|null, label: string, basePath: string, priority: int, icon: string|null, roles: array<int, string>, privileges: array<int, string>, menuItem: array<string, string|null>|null}>
 	 */
 	public function getPluginInfo(): array
 	{