change preventSwipe to a function returning the actual value

This is an interm solution to the `preventSwipe` parameter not being update-able
after the initial render of the card due to the event listeners.

Fixes 3DJakob#88

index.d.ts

@@ -47,11 +47,17 @@ declare interface Props {
   onCardLeftScreen?: CardLeftScreenHandler;
 
   /**
-   * An array of directions for which to prevent swiping out of screen. Valid arguments are `'left'`, `'right'`, `'up'` and `'down'`.
+   * A fn to get the prevent swipe parameter. An array of directions for which to prevent swiping
+   * out of screen. Valid arguments are `'left'`, `'right'`, `'up'` and `'down'`.
    *
-   * @default []
+   * This is required to allow the value to be read from within the event listeners until the issue
+   * following issue is closed.
+   *
+   * https://github.com/3DJakob/react-tinder-card/issues/88
+   *
+   * @default null
    */
-  preventSwipe?: string[];
+  preventSwipe?: () => string[];
 
   /**
    * What method to evaluate what direction to throw the card on release. 'velocity' will evaluate direction based on the direction of the swiping movement. 'position' will evaluate direction based on the position the card has on the screen like in the app tinder.

index.js

@@ -142,7 +142,7 @@ const mouseCoordinatesFromEvent = (e) => {
   return { x: e.clientX, y: e.clientY }
 }
 
-const TinderCard = React.forwardRef(({ flickOnSwipe = true, children, onSwipe, onCardLocationChange, onCardLeftScreen, className, preventSwipe = [], swipeRequirementType = 'velocity', swipeThreshold = settings.swipeThreshold, onSwipeRequirementFulfilled, onSwipeRequirementUnfulfilled }, ref) => {
+const TinderCard = React.forwardRef(({ flickOnSwipe = true, children, onSwipe, onCardLocationChange, onCardLeftScreen, className, preventSwipe = () => [], swipeRequirementType = 'velocity', swipeThreshold = settings.swipeThreshold, onSwipeRequirementFulfilled, onSwipeRequirementUnfulfilled }, ref) => {
   settings.swipeThreshold = swipeThreshold
   const swipeAlreadyReleased = React.useRef(false)
 
@@ -180,10 +180,10 @@ const TinderCard = React.forwardRef(({ flickOnSwipe = true, children, onSwipe, o
     const dir = getSwipeDirection(swipeRequirementType === 'velocity' ? speed : currentPostion)
 
     if (dir !== 'none') {
-      if (onSwipe && !preventSwipe.includes(dir)) onSwipe(dir)
+      if (onSwipe && !preventSwipe().includes(dir)) onSwipe(dir)
 
       if (flickOnSwipe) {
-        if (!preventSwipe.includes(dir)) {
+        if (!preventSwipe().includes(dir)) {
           const outVelocity = swipeRequirementType === 'velocity' ? speed : normalize(currentPostion, 600)
           await animateOut(element, outVelocity)
           element.style.display = 'none'