Have you ever encountered this cryptic warning during a pod install in your React Native or Expo project? [!] Can 't merge pod_target_xcconfig for pod targets: [ "expo-dev-menu" , "Main" , "ReactNativeCompatibles" , "SafeAreaView" , "Vendored" ]. Singular build setting DEFINES_MODULE has different values. If so, you’re not alone! This message, often seen when integrating native iOS code, can be perplexing. But don’t worry, it’s usually not a major problem and we’re here to break it down. This post will explain what it means, why it occurs, and how you can resolve it. Understanding DEFINES_MODULE Let’s start with the basics. The DEFINES_MODULE setting is an Xcode build setting that dictates whether a module map should be generated for a specific target (a project or a pod, in this case). Module maps are crucial, particularly when your project involves Swift code. They enable proper Swift interoperability by allowing imports of mod...