Use RocketSim Network Monitoring with both React Native CLI generated and Expo projects

AppDelegate.mm

// imports...

@interface RocketSimLoader : NSObject

- (void)loadRocketSimConnect;

@end

@implementation RocketSimLoader

- (void)loadRocketSimConnect {
#if DEBUG
    NSString *frameworkPath = @"/Applications/RocketSim.app/Contents/Frameworks/RocketSimConnectLinker.nocache.framework";
    NSBundle *frameworkBundle = [NSBundle bundleWithPath:frameworkPath];
    NSError *error = nil;

    if (![frameworkBundle loadAndReturnError:&error]) {
        NSLog(@"Failed to load linker framework: %@", error);
        return;
    }

    NSLog(@"RocketSim Connect successfully linked");
#endif
}

@end


@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  
  RocketSimLoader *loader = [[RocketSimLoader alloc] init];
  [loader loadRocketSimConnect];
  
  // code ...
  
  return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

@end

@juanchoperezj Aah! Thank you! Maybe I can use AI to build an expo plugin so that we can build it on the EAS server. I build my app on EAS server for the very reason of losing my changes on prebuild. Thank you!

Hi guys!
I created an expo config plugin for RocketSim Connect.
Feel free to use it.

1. Download the file

./plugins/withRocketSimConnect.js

const { withAppDelegate, WarningAggregator } = require('@expo/config-plugins');
const {
  mergeContents,
} = require('@expo/config-plugins/build/utils/generateCode');

const methodInvocationDefinition = `@interface RocketSimLoader : NSObject

- (void)loadRocketSimConnect;

@end

@implementation RocketSimLoader

- (void)loadRocketSimConnect {
#if DEBUG
  NSString *frameworkPath = @"/Applications/RocketSim.app/Contents/Frameworks/RocketSimConnectLinker.nocache.framework";
  NSBundle *frameworkBundle = [NSBundle bundleWithPath:frameworkPath];
  NSError *error = nil;

  if (![frameworkBundle loadAndReturnError:&error]) {
    NSLog(@"Failed to load linker framework: %@", error);
    return;
  }

  NSLog(@"RocketSim Connect successfully linked");
#endif
}

@end`;

const methodInvocationBlock = `RocketSimLoader *loader = [[RocketSimLoader alloc] init];
  [loader loadRocketSimConnect];`;

const methodInvocationLineMatcher =
  /-\s*\(BOOL\)\s*application:\s*\(UIApplication\s*\*\s*\)\s*\w+\s+didFinishLaunchingWithOptions:/g;

/** @param {string} appDelegate */
const modifyAppDelegate = (appDelegate) => {
  let contents = appDelegate;

  // Check if the method invocation is already there
  if (contents.includes(methodInvocationBlock)) {
    return contents;
  }

  // Check if the method invocation present in the file
  if (!methodInvocationLineMatcher.test(contents)) {
    WarningAggregator.addWarningIOS(
      'withRocketSimConnect',
      `Unable to determine correct insertion point in AppDelegate.
Skipping RocketSim Connect addition.`,
    );
    return contents;
  }

  // Check if the import statement is already there
  if (!appDelegate.includes(methodInvocationDefinition)) {
    contents = mergeContents({
      src: contents,
      anchor: methodInvocationLineMatcher,
      newSrc: methodInvocationDefinition,
      offset: -2,
      tag: 'withRocketSimConnect - definition',
      comment: '//',
    }).contents;
  }

  contents = mergeContents({
    src: contents,
    anchor: methodInvocationLineMatcher,
    newSrc: methodInvocationBlock,
    offset: 2,
    tag: 'withRocketSimConnect - didFinishLaunchingWithOptions',
    comment: '//',
  }).contents;

  return contents;
};

/** @param {import('@expo/config-types').ExpoConfig} config */
const withRocketSimConnect = (config) => {
  return withAppDelegate(config, (config) => {
    if (['objc', 'objcpp'].includes(config.modResults.language)) {
      config.modResults.contents = modifyAppDelegate(
        config.modResults.contents,
      );
    } else {
      WarningAggregator.addWarningIOS(
        'withRocketSimConnect',
        'Swift AppDelegate files are not supported yet.',
      );
    }
    return config;
  });
};

module.exports = withRocketSimConnect;

2. Update your app.json or app.config.js

{
  "expo": {
    ...
    "plugins": [
      ...
      "./plugins/withRocketSimConnect.js"
    ]
  }
}

3. Use it with expo prebuild

cc @AvdLee