react-native-navigation/lib/ios/ElementAlphaTransition.m

#import "ElementAlphaTransition.h"

@implementation ElementAlphaTransition

- (CATransform3D)animateWithProgress:(CGFloat)p {
    self.view.alpha = [RNNInterpolator fromFloat:self.from toFloat:self.to precent:p interpolation:self.interpolation];
    return CATransform3DIdentity;
}

- (CGFloat)initialValue {
    return self.view.alpha;
}

@end