I need a conversion to Java script of this code ..... plsss

cocos2d-x JavaScript
1

-(instancetype)init
{
if((self = [super init]))
{
// Enable touch handling on scene node
self.userInteractionEnabled = YES;

    // Load the generated physics shapes into the PhysicsShapeCache
    [[PhysicsShapeCache sharedShapeCache] addShapesWithFile:@"Shapes.plist"];

    // Load background image
    CCSprite *background = [CCSprite spriteWithImageNamed:@"background.png"];
    background.anchorPoint = ccp(0,0);
    [self addChild:background];

    // Setup physics world
    _physicsWorld = [CCPhysicsNode node];
    _physicsWorld.gravity = ccp(0,-900);
    //_physicsWorld.debugDraw = YES;
    [self addChild:_physicsWorld];

    // Add ground sprite (set as static in PhysicsEditor)
    [self spawnSprite:@"ground" atPos:ccp(0,0)];

    // Add a banana
    [self spawnSprite:@"banana" atPos:ccp(self.contentSize.width/2,self.contentSize.height/2)];
}

return self;

}

I need to add the chipmunk plist file loaded in to my project … plss help!