React Native NativeModules Empty Object

Trying to create my first npm module in order to determine if a user is on the phone. It's for a React Native app. No matter what I try, the module returns undefined. NativeModules always appears to be an empty object.

Please help! Below is a link to the code. export default RNOnPhoneCall; in index.js will only return undefined. How do I link the functions in ios folder, and export them in index.js? Heads up, android is not up to date yet, only ios.

Link to Github

I was not exporting the method correctly in my iOS file. Here's the solution, along with a link to the final project.

react-native-check-phone-call-status on github

#import "RNCheckPhoneCallStatus.h"
#import "React/RCTLog.h"
#import <AVFoundation/AVAudioSession.h>
#import<CoreTelephony/CTCallCenter.h>
#import<CoreTelephony/CTCall.h>

@implementation RNCheckPhoneCallStatus

RCT_EXPORT_MODULE()

RCT_EXPORT_METHOD(get:(RCTResponseSenderBlock)callback)
{
    NSString *phoneStatus = @"PHONE_OFF";
    CTCallCenter *ctCallCenter = [[CTCallCenter alloc] init];
    if (ctCallCenter.currentCalls != nil)
    {
        NSArray* currentCalls = [ctCallCenter.currentCalls allObjects];
        for (CTCall *call in currentCalls)
        {
            if(call.callState == CTCallStateConnected)
            {
                phoneStatus = @"PHONE_ON";
            }
        }
    }
    callback(@[[NSNull null], phoneStatus]);
}

@end