code: function forHorizontal(props) {
    const { layout, position, scene } = props;
  
    if (!layout.isMeasured) {
      return forInitial(props);
    }
    const interpolate = getSceneIndicesForInterpolationInputRange(props);
  
    if (!interpolate) return { opacity: 0 };
  
    const { first, last } = interpolate;
    const index = scene.index;
    const opacity = position.interpolate({
      inputRange: [first, first + 0.01, index, last - 0.01, last],
      outputRange: [0, 1, 1, 0.85, 0],
    });
  
    const width = layout.initWidth;
    const translateX = position.interpolate({
      inputRange: [first, index, last],
      outputRange: I18nManager.isRTL
        ? [-width, 0, width * 0.3]
        : [width, 0, width * -0.3],
    });
    const translateY = 0;
  
    return {
      opacity,
      transform: [{ translateX }, { translateY }],
    };
  }
docs: Standard iOS-style slide in from the right.