fix shape name export

Author: shakiba

.changeset/little-queens-exist.md

@@ -0,0 +1,5 @@
+---
+"planck": patch
+---
+
+Fix shape name alias export

src/collision/shape/BoxShape.ts

@@ -45,4 +45,4 @@ export class BoxShape extends PolygonShape {
   }
 }
 
-export const Box = BoxShape;
+export { BoxShape as Box };

src/collision/shape/ChainShape.ts

@@ -365,4 +365,4 @@ export class ChainShape extends Shape {
   }
 }
 
-export const Chain = ChainShape;
+export { ChainShape as Chain };

src/collision/shape/CircleShape.ts

@@ -211,4 +211,4 @@ export class CircleShape extends Shape {
   }
 }
 
-export const Circle = CircleShape;
+export { CircleShape as Circle };

src/collision/shape/EdgeShape.ts

@@ -314,4 +314,4 @@ export class EdgeShape extends Shape {
   }
 }
 
-export const Edge = EdgeShape;
+export { EdgeShape as Edge };

src/collision/shape/PolygonShape.ts

@@ -577,4 +577,4 @@ export class PolygonShape extends Shape {
   return c;
 }
 
-export const Polygon = PolygonShape;
+export { PolygonShape as Polygon };