Only define calculateDeltas for Mac.
Only define calculateDeltas for Mac.

hristoterezov/robotjs,hristoterezov/robotjs,BHamrick1/robotjs,BHamrick1/robotjs,octalmage/robotjs,octalmage/robotjs,BHamrick1/robotjs,octalmage/robotjs,octalmage/robotjs,hristoterezov/robotjs,BHamrick1/robotjs,hristoterezov/robotjs