Npx expo run:ios can only be run on a Mac, and Xcode must be installed. Fatal errors causing your app to crash will be surfaced in the terminal preventing the need to reproduce in Xcode.Smart log parsing shows warnings and errors from your project source code, unlike Xcode which surfaces hundreds of benign warnings from your node modules.Automatically codesign iOS apps for development from the CLI without having to open Xcode.Supports locked devices, letting you retry instantly instead of needing to rebuild. Build directly on connected devices with no global side effects using the -device flag.You can compile your app locally with the run commands: Expo CLI provides commands for performing both tasks. BuildingĪ React Native app consists of two parts: a native runtime ( compiling), and static files like JavaScript bundles and assets ( exporting). It is not meant to be shared with other developers. gitignore file, by default, when a new project is created. settings.json: Contains information about server configuration that is used to serve the project's manifest.īoth of these files have information that is specific to your local computer.devices.json: Contains information about devices that have opened this project recently.expo directory is created at the root of that project. When you start the development server in a project for the first time, a. If you don't use the flag and your computer has no internet connection, then offline support will automatically be enabled, it will just take a bit longer to verify the reachability.Įxpo CLI makes network requests to sign manifests with your user credentials to ensure sensitive information is sandboxed in reusable runtimes like Expo Go.expo directory Offline will prevent the CLI from making network requests. You can develop without a network connection by using the -offline flag: Some Windows users have also reported needing modify their antivirus settings to allow Ngrok to work. Be sure to check for Ngrok outages before reporting an issue. ![]() This is often related to intermittent connection problems with the Ngrok servers. Tunneling requires a third-party hosting service, this means it may sometimes experience intermittent issues like ngrok tunnel took too long to connect or Tunnel connection has been closed.
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