Migrate codebase to PHP v7.4 features (#18)

Author: PabloKowalczyk

src/Application/Size.php

@@ -6,10 +6,9 @@
 
 final class Size
 {
-    const MEGABYTE_IN_BYTES = 1024 ** 2;
+    private const MEGABYTE_IN_BYTES = 1024 ** 2;
 
-    /** @var int */
-    private $sizeInBytes;
+    private int $sizeInBytes;
 
     private function __construct(int $sizeInBytes)
     {

src/Application/StatsProvider/ApcuStats.php

@@ -8,18 +8,12 @@
 
 final class ApcuStats
 {
-    /** @var bool */
-    private $enabled;
-    /** @var int */
-    private $slotsSize;
-    /** @var int */
-    private $slotsUsage;
-    /** @var Size */
-    private $memorySize;
-    /** @var Size */
-    private $memoryUsage;
-    /** @var string */
-    private $memoryType;
+    private bool $enabled;
+    private int $slotsSize;
+    private int $slotsUsage;
+    private Size $memorySize;
+    private Size $memoryUsage;
+    private string $memoryType;
 
     public function __construct(
         bool $enabled,

src/Application/StatsProvider/OpcacheStats.php

@@ -8,24 +8,15 @@
 
 final class OpcacheStats
 {
-    /** @var bool */
-    private $enabled;
-    /** @var Size */
-    private $size;
-    /** @var Size */
-    private $usage;
-    /** @var Size */
-    private $internedStringsSize;
-    /** @var Size */
-    private $internedStringsUsage;
-    /** @var int */
-    private $internedStringsNumber;
-    /** @var int */
-    private $scriptSlotsSize;
-    /** @var int */
-    private $scriptSlotsUsage;
-    /** @var float */
-    private $hitRatio;
+    private bool $enabled;
+    private Size $size;
+    private Size $usage;
+    private Size $internedStringsSize;
+    private Size $internedStringsUsage;
+    private int $internedStringsNumber;
+    private int $scriptSlotsSize;
+    private int $scriptSlotsUsage;
+    private float $hitRatio;
 
     public function __construct(
         bool $enabled,

src/Application/StatsProvider/RealPathStats.php

@@ -8,12 +8,9 @@
 
 final class RealPathStats
 {
-    /** @var bool */
-    private $enabled;
-    /** @var Size */
-    private $size;
-    /** @var Size */
-    private $usage;
+    private bool $enabled;
+    private Size $size;
+    private Size $usage;
 
     public function __construct(
         bool $enabled,