RN Gesture

  return block([
    startClock(clock),
    set(delta, diff(translationY)),
    cond(
      eq(gestureState, State.ACTIVE),
      [
        set(isSpringing, 0),
        set(
          state.position,
          add(
            state.position,
            cond(
              isInBound,
              delta,
              multiply(delta, friction(min(divide(abs(overScroll), containerHeight), 1)))
            )
          )
        ),
        set(state.velocity, velocityY),
        set(state.time, 0)
      ],
      [
        set(translationY, 0),
        cond(
          and(isInBound, not(isSpringing)),
          [decay(clock, state, {deceleration: 0.997})],
          [
            set(isSpringing, 1),
            set(
              config.toValue,
              snapPoint(state.position, state.velocity, [lowerBound, upperBound])
            ),
            spring(clock, state, config)
          ]
        )
      ]
    ),
    state.position
  ])