feat(strings): change signature of method increment

BREAKING CHANGES

- signature of method `increment` changed.

src/Strings.php

@@ -321,12 +321,12 @@ public function random(int $length = 64, string $keyspace = '0123456789abcdefghi
     /**
      * Add's _1 to a string or increment the ending number to allow _2, _3, etc.
      *
-     * @param  int    $first     Start with
      * @param  string $separator Separator
+     * @param  int    $first     Start with
      *
      * @return self Returns instance of The Strings class.
      */
-    public function increment(int $first = 1, string $separator = '_'): self
+    public function increment(string $separator = '_', int $first = 1): self
     {
         preg_match('/(.+)' . $separator . '([0-9]+)$/', $this->string, $match);
 

tests/StringsTest.php

@@ -76,8 +76,8 @@
 
 test('test increment() method', function (): void {
     $this->assertEquals('page_2', Strings::create('page_1')->increment());
-    $this->assertEquals('page_3', Strings::create('page')->increment(3));
-    $this->assertEquals('page-3', Strings::create('page')->increment(3, '-'));
+    $this->assertEquals('page_3', Strings::create('page')->increment('_', 3));
+    $this->assertEquals('page-3', Strings::create('page')->increment('-', 3));
 });