[WIP] Fix null issue with NativeModules.SensitiveInfo in iOS bridge

[Copilot]

Thanks for assigning this issue to me. I'm starting to work on it and will keep this PR's description up to date as I form a plan and make progress.

Original prompt

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This section details on the original issue you should resolve

<issue_title>NativeModules.SensitiveInfo is null — missing RCT_EXTERN_MODULE export in Swift bridge (v5.6.0)</issue_title>
<issue_description>It seems that the iOS native module for react-native-sensitive-info is not being correctly exposed to the React Native bridge in version 5.6.0.

In the library index.ts:

import { NativeModules } from 'react-native';

function getNativeModule() {
  try {
    return NativeModules.SensitiveInfo;
  } catch {
    return null;
  }
}

NativeModules.SensitiveInfo is always null, which suggests the native side is not being properly exported to the bridge.

⚙️ Technical Details

React Native version: 0.82

react-native-sensitive-info version: 5.6.0

🔥 Actual Behavior

Everything appears to work correctly at build time and runtime — there are no compilation errors and no crashes. However, the data store does not persist any data because the library falls back to a non-native implementation.
This happens since NativeModules.SensitiveInfo is null, and the fallback logic is triggered instead of using the native keychain/secure storage.

🧠 What I Found

In recent React Native versions, Swift-based modules must include an Objective-C file that explicitly declares the module using the RCT_EXTERN_MODULE macro.
For example:

#import <React/RCTBridgeModule.h>

@interface RCT_EXTERN_MODULE(SensitiveInfo, NSObject)
@end

Without this declaration, the Swift class won’t be registered with the React Native bridge, resulting in NativeModules.SensitiveInfo being undefined or null.

After inspecting the react-native-sensitive-info iOS sources, it looks like such a file (e.g. SensitiveInfo.m) is missing — which could explain the issue.

🧪 Steps to Reproduce

Install [email protected]

Run pod install inside the ios directory

Build the iOS app

Try to access NativeModules.SensitiveInfo in JS — it returns null

✅ Expected Behavior

NativeModules.SensitiveInfo should return a valid native module instance, exposing the expected methods (e.g., getItem, setItem, etc.).</issue_description>

Comments on the Issue (you are @copilot in this section)

@mCodex @gbettinazzi thanks for you PR. I'll check it soon 😄

• Fixes NativeModules.SensitiveInfo is null — missing RCT_EXTERN_MODULE export in Swift bridge (v5.6.0) #480

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