fix: add #[ReturnTypeWillChange] annotations to Config class

For Countable, Iterator, and ArrayAccess methods.

Signed-off-by: Matthew Weier O'Phinney <[email protected]>

src/Config.php

@@ -5,6 +5,8 @@
 use ArrayAccess;
 use Countable;
 use Iterator;
+// @codingStandardsIgnoreLine
+use ReturnTypeWillChange;
 
 use function array_key_exists;
 use function count;
@@ -201,6 +203,7 @@ public function __unset($name)
      * @see    Countable::count()
      * @return int
      */
+    #[ReturnTypeWillChange]
     public function count()
     {
         return count($this->data);
@@ -212,6 +215,7 @@ public function count()
      * @see    Iterator::current()
      * @return mixed
      */
+    #[ReturnTypeWillChange]
     public function current()
     {
         $this->skipNextIteration = false;
@@ -224,6 +228,7 @@ public function current()
      * @see    Iterator::key()
      * @return mixed
      */
+    #[ReturnTypeWillChange]
     public function key()
     {
         return key($this->data);
@@ -235,6 +240,7 @@ public function key()
      * @see    Iterator::next()
      * @return void
      */
+    #[ReturnTypeWillChange]
     public function next()
     {
         if ($this->skipNextIteration) {
@@ -251,6 +257,7 @@ public function next()
      * @see    Iterator::rewind()
      * @return void
      */
+    #[ReturnTypeWillChange]
     public function rewind()
     {
         $this->skipNextIteration = false;
@@ -263,6 +270,7 @@ public function rewind()
      * @see    Iterator::valid()
      * @return bool
      */
+    #[ReturnTypeWillChange]
     public function valid()
     {
         return ($this->key() !== null);
@@ -275,6 +283,7 @@ public function valid()
      * @param  mixed $offset
      * @return bool
      */
+    #[ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return $this->__isset($offset);
@@ -287,6 +296,7 @@ public function offsetExists($offset)
      * @param  mixed $offset
      * @return mixed
      */
+    #[ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return $this->__get($offset);
@@ -300,6 +310,7 @@ public function offsetGet($offset)
      * @param  mixed $value
      * @return void
      */
+    #[ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         $this->__set($offset, $value);
@@ -312,6 +323,7 @@ public function offsetSet($offset, $value)
      * @param  mixed $offset
      * @return void
      */
+    #[ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         $this->__unset($offset);