Updating comments

Author: mattgperry

packages/framer-motion/src/animation/interfaces/motion-value.ts

@@ -118,9 +118,18 @@ export const animateMotionValue = (
          * Animate via WAAPI if possible.
          */
         if (
+            /**
+             * If this is a handoff animation, the optimised animation will be running via
+             * WAAPI. Therefore, this animation must be JS to ensure it runs "under" the
+             * optimised animation.
+             */
             !transition.isHandoff &&
             value.owner &&
             value.owner.current instanceof HTMLElement &&
+            /**
+             * If we're outputting values to onUpdate then we can't use WAAPI as there's
+             * no way to read the value from WAAPI every frame.
+             */
             !value.owner.getProps().onUpdate
         ) {
             const acceleratedAnimation = createAcceleratedAnimation(