Fix PHP8 return type incompatibility (#17)

Author: plotbox-io

src/Throttle/Throttler/AbstractWindowThrottler.php

@@ -128,5 +128,5 @@ abstract public function hit();
     /**
      * @inheritdoc
      */
-    abstract public function count();
+    abstract public function count(): int;
 }

src/Throttle/Throttler/ElasticWindowThrottler.php

@@ -94,7 +94,7 @@ public function clear()
     /**
      * @inheritdoc
      */
-    public function count()
+    public function count(): int
     {
         if (!is_null($this->counter)) {
             return $this->counter;

src/Throttle/Throttler/FixedWindowThrottler.php

@@ -59,7 +59,7 @@ public function hit()
     /**
      * @inheritdoc
      */
-    public function count()
+    public function count(): int
     {
         try {
             if (($this->timeProvider->now() - $this->cache->get($this->getTimeCacheKey())) > $this->timeLimit) {

src/Throttle/Throttler/LeakyBucketThrottler.php

@@ -131,7 +131,7 @@ public function clear()
     /**
      * @inheritdoc
      */
-    public function count()
+    public function count(): int
     {
         try {
             $cachedTime = $this->cache->get($this->getTimeCacheKey());

src/Throttle/Throttler/MovingWindowThrottler.php

@@ -58,7 +58,7 @@ public function hit()
     /**
      * @inheritdoc
      */
-    public function count()
+    public function count(): int
     {
         $this->updateHitCount();
 

src/Throttle/Throttler/RetrialQueueThrottler.php

@@ -83,7 +83,7 @@ public function clear()
     /**
      * @inheritdoc
      */
-    public function count()
+    public function count(): int
     {
         return $this->internalThrottler->count();
     }

src/Throttle/Throttler/ThrottlerInterface.php

@@ -56,7 +56,7 @@ public function clear();
      *
      * @return int
      */
-    public function count();
+    public function count(): int;
 
     /**
      * Check the throttle status