Clean code

app/code/Magento/Catalog/Ui/Component/ColumnFactory.php

@@ -46,12 +46,14 @@ public function __construct(\Magento\Framework\View\Element\UiComponentFactory $
         $this->componentFactory = $componentFactory;
     }
 
-    /**
-     * @param \Magento\Catalog\Api\Data\ProductAttributeInterface $attribute
-     * @param \Magento\Framework\View\Element\UiComponent\ContextInterface $context
-     * @param array $config
-     * @return \Magento\Ui\Component\Listing\Columns\ColumnInterface
-     */
+	/**
+	 * @param \Magento\Catalog\Api\Data\ProductAttributeInterface          $attribute
+	 * @param \Magento\Framework\View\Element\UiComponent\ContextInterface $context
+	 * @param array                                                        $config
+	 *
+	 * @return \Magento\Ui\Component\Listing\Columns\ColumnInterface
+	 * @throws \Magento\Framework\Exception\LocalizedException
+	 */
     public function create($attribute, $context, array $config = [])
     {
         $columnName = $attribute->getAttributeCode();
@@ -96,9 +98,7 @@ protected function getJsComponent($dataType)
      */
     protected function getDataType($attribute)
     {
-        return isset($this->dataTypeMap[$attribute->getFrontendInput()])
-            ? $this->dataTypeMap[$attribute->getFrontendInput()]
-            : $this->dataTypeMap['default'];
+        return $this->dataTypeMap[$attribute->getFrontendInput()] ?? $this->dataTypeMap['default'];
     }
 
     /**
@@ -111,6 +111,6 @@ protected function getFilterType($frontendInput)
     {
         $filtersMap = ['date' => 'dateRange'];
         $result = array_replace_recursive($this->dataTypeMap, $filtersMap);
-        return isset($result[$frontendInput]) ? $result[$frontendInput] : $result['default'];
+        return $result[$frontendInput] ?? $result['default'];
     }
 }

app/code/Magento/Catalog/Ui/Component/Listing/Columns/Thumbnail.php

@@ -74,6 +74,6 @@ public function prepareDataSource(array $dataSource)
     protected function getAlt($row)
     {
         $altField = $this->getData('config/altField') ?: self::ALT_FIELD;
-        return isset($row[$altField]) ? $row[$altField] : null;
+        return $row[$altField] ?? null;
     }
 }

app/code/Magento/CatalogUrlRewrite/Model/ObjectRegistry.php

@@ -26,15 +26,19 @@ public function __construct($entities)
     }
 
     /**
+     * Get
+     *
      * @param int $entityId
      * @return \Magento\Framework\DataObject|null
      */
     public function get($entityId)
     {
-        return isset($this->entitiesMap[$entityId]) ? $this->entitiesMap[$entityId] : null;
+        return $this->entitiesMap[$entityId] ?? null;
     }
 
     /**
+     * List
+     *
      * @return \Magento\Framework\DataObject[]
      */
     public function getList()

app/code/Magento/Customer/Block/Adminhtml/Edit/Tab/View/Sales.php

@@ -147,7 +147,7 @@ public function _beforeToHtml()
      */
     public function getWebsiteCount($websiteId)
     {
-        return isset($this->_websiteCounts[$websiteId]) ? $this->_websiteCounts[$websiteId] : 0;
+        return $this->_websiteCounts[$websiteId] ?? 0;
     }
 
     /**
@@ -166,13 +166,15 @@ public function getTotals()
         return $this->_collection->getTotals();
     }
 
-    /**
-     * Format price by specified website
-     *
-     * @param float $price
-     * @param null|int $websiteId
-     * @return string
-     */
+	/**
+	 * Format price by specified website
+	 *
+	 * @param float    $price
+	 * @param null|int $websiteId
+	 *
+	 * @return string
+	 * @throws \Magento\Framework\Exception\LocalizedException
+	 */
     public function formatCurrency($price, $websiteId = null)
     {
         return $this->_storeManager->getWebsite($websiteId)->getBaseCurrency()->format($price);

app/code/Magento/Customer/Model/Address/AbstractAddress.php

@@ -230,7 +230,7 @@ public function getStreet()
     public function getStreetLine($number)
     {
         $lines = $this->getStreet();
-        return isset($lines[$number - 1]) ? $lines[$number - 1] : '';
+        return $lines[$number - 1] ?? '';
     }
 
     /**

app/code/Magento/Fedex/Model/Carrier.php

@@ -982,11 +982,12 @@ public function getCode($type, $code = '')
         }
     }
 
-    /**
-     * Return FeDex currency ISO code by Magento Base Currency Code
-     *
-     * @return string 3-digit currency code
-     */
+	/**
+	 * Return FeDex currency ISO code by Magento Base Currency Code
+	 *
+	 * @return string 3-digit currency code
+	 * @throws \Magento\Framework\Exception\NoSuchEntityException
+	 */
     public function getCurrencyCode()
     {
         $codes = [
@@ -1008,7 +1009,7 @@ public function getCurrencyCode()
         ];
         $currencyCode = $this->_storeManager->getStore()->getBaseCurrencyCode();
 
-        return isset($codes[$currencyCode]) ? $codes[$currencyCode] : $currencyCode;
+        return $codes[$currencyCode] ?? $currencyCode;
     }
 
     /**

app/code/Magento/InstantPurchase/PaymentMethodIntegration/IntegrationFactory.php

@@ -72,6 +72,6 @@ public function create(VaultPaymentInterface $paymentMethod, int $storeId): Inte
      */
     private function extractFromConfig($config, string $field, string $default): string
     {
-        return isset($config[$field]) ? $config[$field] : $default;
+        return $config[$field] ?? $default;
     }
 }

app/code/Magento/ReleaseNotification/Ui/DataProvider/NotificationDataProvider.php

@@ -119,7 +119,7 @@ public function getName()
      */
     public function getConfigData()
     {
-        return isset($this->data['config']) ? $this->data['config'] : [];
+        return $this->data['config'] ?? [];
     }
 
     /**

app/code/Magento/Sales/Model/Order/Address.php

@@ -251,7 +251,7 @@ public function getStreet()
     public function getStreetLine($number)
     {
         $lines = $this->getStreet();
-        return isset($lines[$number - 1]) ? $lines[$number - 1] : '';
+        return $lines[$number - 1] ?? '';
     }
 
     //@codeCoverageIgnoreStart

app/code/Magento/Sales/Model/Order/Payment/Info.php

@@ -181,7 +181,7 @@ public function getAdditionalInformation($key = null)
         if (null === $key) {
             return $this->additionalInformation;
         }
-        return isset($this->additionalInformation[$key]) ? $this->additionalInformation[$key] : null;
+        return $this->additionalInformation[$key] ?? null;
     }
 
     /**

app/code/Magento/Sales/Model/Order/Payment/Transaction.php

@@ -472,7 +472,7 @@ public function getAdditionalInformation($key = null)
             $info = [];
         }
         if ($key) {
-            return isset($info[$key]) ? $info[$key] : null;
+            return $info[$key] ?? null;
         }
         return $info;
     }
@@ -898,7 +898,7 @@ public function getTxnId()
     public function getHtmlTxnId()
     {
         $this->_eventManager->dispatch($this->_eventPrefix . '_html_txn_id', $this->_getEventData());
-        return isset($this->_data['html_txn_id']) ? $this->_data['html_txn_id'] : $this->getTxnId();
+        return $this->_data['html_txn_id'] ?? $this->getTxnId();
     }
 
     /**

app/code/Magento/Sales/Model/ResourceModel/AbstractGrid.php

@@ -103,6 +103,6 @@ protected function getLastUpdatedAtValue($default = '0000-00-00 00:00:00')
 
         $row = $this->getConnection()->fetchRow($select);
 
-        return isset($row['updated_at']) ? $row['updated_at'] : $default;
+        return $row['updated_at'] ?? $default;
     }
 }

app/code/Magento/Shipping/Model/Carrier/AbstractCarrierOnline.php

@@ -184,11 +184,11 @@ public function setActiveFlag($code = 'active')
     /**
      * Return code of carrier
      *
-     * @return string
+     * @return string|null
      */
     public function getCarrierCode()
     {
-        return isset($this->_code) ? $this->_code : null;
+        return $this->_code ?? null;
     }
 
     /**
@@ -410,7 +410,7 @@ protected function _getCachedQuotes($requestParams)
     {
         $key = $this->_getQuotesCacheKey($requestParams);
 
-        return isset(self::$_quotesCache[$key]) ? self::$_quotesCache[$key] : null;
+        return self::$_quotesCache[$key] ?? null;
     }
 
     /**

app/code/Magento/Signifyd/Model/SignifydGateway/Request/AddressBuilder.php

@@ -41,6 +41,6 @@ private function getStreetLine($number, $street)
     {
         $lines = is_array($street) ? $street : [];
 
-        return isset($lines[$number - 1]) ? $lines[$number - 1] : '';
+        return $lines[$number - 1] ?? '';
     }
 }