Leverage arrow function syntax for closure

Author: tigitz

Tests/AbstractCrawlerTest.php

@@ -262,9 +262,7 @@ public function testNormalizeWhiteSpace()
 
     public function testEach()
     {
-        $data = $this->createTestCrawler()->filterXPath('//ul[1]/li')->each(function ($node, $i) {
-            return $i.'-'.$node->text();
-        });
+        $data = $this->createTestCrawler()->filterXPath('//ul[1]/li')->each(fn ($node, $i) => $i.'-'.$node->text());
 
         $this->assertEquals(['0-One', '1-Two', '2-Three'], $data, '->each() executes an anonymous function on each node of the list');
     }
@@ -290,9 +288,7 @@ public function testSlice()
     public function testReduce()
     {
         $crawler = $this->createTestCrawler()->filterXPath('//ul[1]/li');
-        $nodes = $crawler->reduce(function ($node, $i) {
-            return 1 !== $i;
-        });
+        $nodes = $crawler->reduce(fn ($node, $i) => 1 !== $i);
         $this->assertNotSame($nodes, $crawler, '->reduce() returns a new instance of a crawler');
         $this->assertInstanceOf(Crawler::class, $nodes, '->reduce() returns a new instance of a crawler');