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framer-motion

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A simple and powerful JavaScript animation library

github.com/motiondivision/motion

motiondivision/motion

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// Accepts an easing function and returns a new one that outputs mirrored values for // the second half of the animation. Turns easeIn into easeInOut. const mirrorEasing = (easing) => (p) => p <= 0.5 ? easing(2 * p) / 2 : (2 - easing(2 * (1 - p))) / 2; export { mirrorEasing };