Updated annotations [ci skip]

src/Escaper.php

@@ -10,12 +10,12 @@
 class Escaper
 {
 	/**
-	* @var array Characters to escape in a character class
+	* @var array<string> Characters to escape in a character class
 	*/
 	public $inCharacterClass = ['-' => '\\-', '\\' => '\\\\', ']' => '\\]', '^' => '\\^'];
 
 	/**
-	* @var array Characters to escape outside of a character class
+	* @var array<string> Characters to escape outside of a character class
 	*/
 	public $inLiteral = [
 		'$'  => '\\$',  '(' => '\\(', ')' => '\\)', '*' => '\\*',

src/Passes/AbstractPass.php

@@ -108,7 +108,7 @@ protected function isCharacterClassString(array $string): bool
 	/**
 	* Test whether given string contains one single element that is an alternation
 	*
-	* @param  array
+	* @param  array $string
 	* @return bool
 	*/
 	protected function isSingleAlternationString(array $string): bool

src/Serializer.php

@@ -102,8 +102,8 @@ protected function analyzeStrings(array $strings): array
 	/**
 	* Return the portion of strings that are composed of a single character
 	*
-	* @param  array[]
-	* @return array   String key => value
+	* @param  array<int, array> $strings
+	* @return array<int, int>            String key => value
 	*/
 	protected function getChars(array $strings): array
 	{