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function useTransform2(
mv1: MotionValue,
mv2: MotionValue,
transformer: (v1, v2) => any
) {
const mv = useMotionValue(0)
React.useEffect(() => {
const unsub1 = mv1.onChange(v1 => mv.set(transformer(v1, mv2.get())))
const unsub2 = mv2.onChange(v2 => mv.set(transformer(mv1.get(), v2)))
return () => {
}, [mv1, mv2, transformer, mv])
return mv
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