[TASK] Upgrade to PHPStan 2.x and Rector 2.x

Also add some more return type declarations as added by the new
Rector version.

Author: oliverklee

composer.json

@@ -29,10 +29,10 @@
     "require-dev": {
         "php-parallel-lint/php-parallel-lint": "1.4.0",
         "phpstan/extension-installer": "1.4.3",
-        "phpstan/phpstan": "1.12.9",
-        "phpstan/phpstan-phpunit": "1.4.0",
+        "phpstan/phpstan": "2.0.3",
+        "phpstan/phpstan-phpunit": "2.0.1",
         "phpunit/phpunit": "8.5.40",
-        "rector/rector": "1.2.10"
+        "rector/rector": "2.0.0"
     },
     "suggest": {
         "ext-mbstring": "for parsing UTF-8 CSS"

config/phpstan-baseline.neon

@@ -1,12 +1,20 @@
 parameters:
 	ignoreErrors:
 		-
-			message: "#^Call to an undefined method Sabberworm\\\\CSS\\\\OutputFormat\\:\\:setIndentation\\(\\)\\.$#"
+			message: '#^Call to an undefined method Sabberworm\\CSS\\OutputFormat\:\:setIndentation\(\)\.$#'
+			identifier: method.notFound
 			count: 2
 			path: ../src/OutputFormat.php
 
 		-
-			message: "#^Class Sabberworm\\\\CSS\\\\Value\\\\Size constructor invoked with 5 parameters, 1\\-4 required\\.$#"
+			message: '#^Class Sabberworm\\CSS\\Value\\Size constructor invoked with 5 parameters, 1\-4 required\.$#'
+			identifier: arguments.count
 			count: 2
 			path: ../src/RuleSet/DeclarationBlock.php
 
+		-
+			message: '#^@covers value \\Sabberworm\\CSS\\Value\\Value\:\:parseValue\(\) references an invalid method\.$#'
+			identifier: phpunit.coversMethod
+			count: 2
+			path: ../tests/ParserTest.php
+

src/CSSList/Document.php

@@ -42,7 +42,7 @@ public static function parse(ParserState $oParserState): Document
      *
      * @return array<int, DeclarationBlock>
      */
-    public function getAllDeclarationBlocks()
+    public function getAllDeclarationBlocks(): array
     {
         /** @var array<int, DeclarationBlock> $aResult */
         $aResult = [];
@@ -55,7 +55,7 @@ public function getAllDeclarationBlocks()
      *
      * @return array<int, RuleSet>
      */
-    public function getAllRuleSets()
+    public function getAllRuleSets(): array
     {
         /** @var array<int, RuleSet> $aResult */
         $aResult = [];
@@ -75,7 +75,7 @@ public function getAllRuleSets()
      *
      * @see RuleSet->getRules()
      */
-    public function getAllValues($mElement = null, $bSearchInFunctionArguments = false)
+    public function getAllValues($mElement = null, $bSearchInFunctionArguments = false): array
     {
         $sSearchString = null;
         if ($mElement === null) {
@@ -103,7 +103,7 @@ public function getAllValues($mElement = null, $bSearchInFunctionArguments = fal
      * @return array<int, Selector>
      * @example `getSelectorsBySpecificity('>= 100')`
      */
-    public function getSelectorsBySpecificity($sSpecificitySearch = null)
+    public function getSelectorsBySpecificity($sSpecificitySearch = null): array
     {
         /** @var array<int, Selector> $aResult */
         $aResult = [];