src/Transformer/Utilities/AbstractHueSaturationValueToUtility.php

@@ -49,7 +49,7 @@ abstract class AbstractHueSaturationValueToUtility
      *
      * @return float
      */
-    protected function calcColorValue($reciprocal = false): float
+    protected function calcColorValue(bool $reciprocal = false): float
     {
         // Rest-Anteil am Vollkreis des aktuellen Intervals als Wert '[0,1]'
         $remainder_grad = $this->hueAsPercentGrad % self::INTERVAL;

src/Transformer/Utilities/RedGreenBlueToHueSaturationValue.php

@@ -114,7 +114,6 @@ class RedGreenBlueToHueSaturationValue
 
         switch ($property) {
             case self::PROPERTY_RED:
-                $amount = 0.0; // 0.0
                 $dividend = $this->green - $this->blu;
                 break;
             case self::PROPERTY_GREEN: