Provide currentValue with defined value of Slider

Author: BartoszKlonowski

package/src/Slider.tsx

@@ -211,7 +211,7 @@ const SliderComponent = (
     ...localProps
   } = props;
   const [currentValue, setCurrentValue] = useState(
-    props.value ?? props.minimumValue,
+    props.value || props.minimumValue || constants.SLIDER_DEFAULT_INITIAL_VALUE,
   );
   const [width, setWidth] = useState(0);
 
@@ -338,7 +338,7 @@ const SliderComponent = (
 const SliderWithRef = React.forwardRef(SliderComponent);
 
 SliderWithRef.defaultProps = {
-  value: 0,
+  value: constants.SLIDER_DEFAULT_INITIAL_VALUE,
   minimumValue: 0,
   maximumValue: 1,
   step: 0,

package/src/utils/constants.ts

@@ -1,4 +1,5 @@
 export const constants = {
+  SLIDER_DEFAULT_INITIAL_VALUE: 0,
   MARGIN_HORIZONTAL_PADDING: 0.05,
   STEP_NUMBER_TEXT_FONT_SMALL: 8,
   STEP_NUMBER_TEXT_FONT_BIG: 12,