implement requiresMainQueueSetup method on react-native, fixes #199

react-native/ios/FFmpegKitReactNativeModule.m

@@ -86,6 +86,8 @@ RCT_EXPORT_MODULE(FFmpegKitReactNativeModule);
     return self;
 }
 
+
+
 - (NSArray<NSString*>*)supportedEvents {
     NSMutableArray *array = [NSMutableArray array];
 
@@ -628,6 +630,10 @@ RCT_EXPORT_METHOD(getExternalLibraries:(RCTPromiseResolveBlock)resolve rejecter:
     statisticsEnabled = false;
 }
 
++ (BOOL)requiresMainQueueSetup {
+  return NO;
+}
+
 + (NSDictionary*)toSessionDictionary:(id<Session>) session {
     if (session != nil) {
         NSMutableDictionary *dictionary = [[NSMutableDictionary alloc] init];