A frequent cause of the error is that the application entry file path is incorrect. Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication). So even when I use Yarn instead it still fails my Xcode build every time (without styled-components there are no problems at all) its like its corrupting my build some how, see example of error below. Npm ERR! A complete log of this run can be found in: Npm ERR! See /Users/nate/.npm/eresolve-report.txt for a full report. Npm ERR! to accept an incorrect (and potentially broken) dependency resolution. Npm ERR! this command with -force, or -legacy-peer-deps Npm ERR! Fix the upstream dependency conflict, or retry Npm ERR! 1 more (babel-plugin-styled-components) Npm ERR! peer from ERR! node_modules/react-dom Npm ERR! Conflicting peer dependency: ERR! node_modules/react Npm ERR! peer 2' from ERR! node_modules/babel-plugin-styled-components Npm ERR! peer 16.8.0' from ERR! node_modules/styled-components Npm ERR! peer from ERR! ERR! from the root project Npm ERR! While resolving: ERR! Found: ERR! node_modules/react updating or reinstalling things like Node.removing node modules and various cleans.This is the error NPM trying to install styled-components with npm (see below) I have tried to do all fixes the internet has to offer such as: I am trying to start a React app with React Native CLI (also tried with Expo, both with a Yarn startup and NPM startup separately).

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