easetype

easetype:
    | "linear"
    | "in-quad"
    | "in-cubic"
    | "in-quart"
    | "in-quint"
    | "in-sine"
    | "in-expo"
    | "in-circ"
    | "in-back"
    | "in-bounce"
    | "in-elastic"
    | "out-quad"
    | "out-cubic"
    | "out-quart"
    | "out-quint"
    | "out-sine"
    | "out-expo"
    | "out-circ"
    | "out-back"
    | "out-bounce"
    | "out-elastic"
    | "in-out-quad"
    | "in-out-cubic"
    | "in-out-quart"
    | "in-out-quint"
    | "in-out-sine"
    | "in-out-expo"
    | "in-out-circ"
    | "in-out-back"
    | "in-out-bounce"
    | "in-out-elastic"
    | "inQuad"
    | "outQuad"
    | "inOutQuad"
    | "outInQuad"
    | "inCubic"
    | "outCubic"
    | "inOutCubic"
    | "outInCubic"
    | "inQuart"
    | "outQuart"
    | "inOutQuart"
    | "outInQuart"
    | "inQuint"
    | "outQuint"
    | "inOutQuint"
    | "outInQuint"
    | "inSine"
    | "outSine"
    | "inOutSine"
    | "outInSine"
    | "inExpo"
    | "outExpo"
    | "inOutExpo"
    | "outInExpo"
    | "inCirc"
    | "outCirc"
    | "inOutCirc"
    | "outInCirc"
    | "inElastic"
    | "outElastic"
    | "inOutElastic"
    | "outInElastic"
    | "inBack"
    | "outBack"
    | "inOutBack"
    | "outInBack"
    | "inBounce"
    | "outBounce"
    | "inOutBounce"
    | "outInBounce"