Drop support for PHP 7.3.

Author: prwater

composer.json

@@ -7,7 +7,7 @@
   ],
   "license": "MIT",
   "require": {
-    "php": ">=7.3",
+    "php": ">=7.4",
     "ext-dom": "*",
     "ext-libxml": "*",
     "plaisio/console": "^2.0.1",

src/Helper/ExceptionHandlerCodeGenerator.php

@@ -20,14 +20,14 @@ class ExceptionHandlerCodeGenerator
    *
    * @var Importing
    */
-  private $importing;
+  private Importing $importing;
 
   /**
    * The PHP code store.
    *
    * @var PhpCodeStore
    */
-  private $store;
+  private PhpCodeStore $store;
 
   //--------------------------------------------------------------------------------------------------------------------
   /**

src/Helper/ExceptionHandlerMetadataExtractor.php

@@ -17,24 +17,24 @@ class ExceptionHandlerMetadataExtractor
    *
    * @var int
    */
-  private $errorCount = 0;
+  private int $errorCount = 0;
 
   /**
    * The output decorator.
    *
    * @var PlaisioStyle
    */
-  private $io;
+  private PlaisioStyle $io;
 
   /**
    * The names of the exceptions handlers.
    *
    * @var array
    */
-  private $names = ['handlePrepareException',
-                    'handleConstructException',
-                    'handleResponseException',
-                    'handleFinalizeException'];
+  private array $names = ['handlePrepareException',
+                          'handleConstructException',
+                          'handleResponseException',
+                          'handleFinalizeException'];
 
   //--------------------------------------------------------------------------------------------------------------------
   /**