minor #32328 [CssSelector] [5.0] Add type-hint whenever possible (Sim…

…perfit)

This PR was merged into the 5.0-dev branch.

Discussion
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[CssSelector] [5.0] Add type-hint whenever possible

| Q             | A
| ------------- | ---
| Branch?       | 5.0
| Bug fix?      | no
| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->
| BC breaks?    | no     <!-- see https://symfony.com/bc -->
| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->
| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->
| Fixed tickets | contribute to #32179   <!-- #-prefixed issue number(s), if any -->
| License       | MIT
| Doc PR        | none  <!-- required for new features -->

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 - Bug fixes must be submitted against the lowest maintained branch where they apply
   (lowest branches are regularly merged to upper ones so they get the fixes too).
 - Features and deprecations must be submitted against branch 4.4.
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Add type hint to css selector ;).

Commits
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3e647d4 [CssSelector] [5.0] Add type-hint whenever possible

src/Symfony/Component/CssSelector/CssSelectorConverter.php

@@ -53,12 +53,9 @@ public function __construct(bool $html = true)
      * Optionally, a prefix can be added to the resulting XPath
      * expression with the $prefix parameter.
      *
-     * @param string $cssExpr The CSS expression
-     * @param string $prefix  An optional prefix for the XPath expression
-     *
      * @return string
      */
-    public function toXPath($cssExpr, $prefix = 'descendant-or-self::')
+    public function toXPath(string $cssExpr, string $prefix = 'descendant-or-self::')
     {
         return $this->translator->cssToXPath($cssExpr, $prefix);
     }

src/Symfony/Component/CssSelector/Exception/SyntaxErrorException.php

@@ -29,7 +29,7 @@ class SyntaxErrorException extends ParseException
      *
      * @return self
      */
-    public static function unexpectedToken($expectedValue, Token $foundToken)
+    public static function unexpectedToken(string $expectedValue, Token $foundToken)
     {
         return new self(sprintf('Expected %s, but %s found.', $expectedValue, $foundToken));
     }
@@ -40,7 +40,7 @@ public static function unexpectedToken($expectedValue, Token $foundToken)
      *
      * @return self
      */
-    public static function pseudoElementFound($pseudoElement, $unexpectedLocation)
+    public static function pseudoElementFound(string $pseudoElement, string $unexpectedLocation)
     {
         return new self(sprintf('Unexpected pseudo-element "::%s" found %s.', $pseudoElement, $unexpectedLocation));
     }
@@ -50,7 +50,7 @@ public static function pseudoElementFound($pseudoElement, $unexpectedLocation)
      *
      * @return self
      */
-    public static function unclosedString($position)
+    public static function unclosedString(int $position)
     {
         return new self(sprintf('Unclosed/invalid string at %s.', $position));
     }