NativeScript Core

tns run

Description

Runs your project on all connected devices or in native emulators for the selected platform.The command will work with all currently running Android devices and emulators. The command will prepare, build and deploy the app when necessary. By default listens for changes in your code, synchronizes those changes and refreshes all selected devices.

When running this command without passing --release flag, the HMR (Hot Module Replacement) is enabled by default. In case you want to disable HMR, you can pass --no-hmr flag. When --release is passed, CLI disables HMR.

How file changes are handled

With HMR (Hot Module Replacement):

  • Changes in .js, .ts, .less, .sass and other file types that are accepted will cause a refresh of the application.
  • Changes in App_Resources will cause a rebuild of the application.
  • Changes in any package.json file inside the project will cause a rebuild of the application.
  • Changes in node_modules/somePlugin if accepted will cause a refresh of the application.
  • Changes in node_modules/somePlugin/platforms will cause a rebuild of the application.
  • Changes in node_modules/somePlugin/package.json file will cause a rebuild of the application.
  • Changes that are not accepted and HMR fails will cause a restart of the native application.

With no HMR:

  • Changes in .js, .ts, .less, .sass and other file types will cause a restart of the native application.
  • Changes in App_Resources will cause a rebuild of the application.
  • Changes in any package.json file inside the project will cause a rebuild of the application.
  • Changes in node_modules/somePlugin will cause a restart of the native application.
  • Changes in node_modules/somePlugin/platforms will cause a rebuild of the application.
  • Changes in node_modules/somePlugin/package.json file will cause a rebuild of the application.

Commands

Usage Synopsis
Run on all connected devices $ tns run [--release] [--justlaunch]
Run on a selected connected device or running emulator. Will start emulator with specified Device Identifier, if not already running. $ tns run --device <Device ID> [--release] [--justlaunch]
Run on all connected devices of the specified Platform $ tns run <Platform> [--release] [--justlaunch]

Options

  • --justlaunch - If set, does not print the application output in the console.
  • --release - If set, produces a release build by running webpack in production mode and native build in release mode. Otherwise, produces a debug build.
  • --device - Specifies a connected device/emulator to start and run the app. <Device ID> is the index or Device Identifier of the target device as listed by the $ tns device <Platform> --available-devices command.
  • --no-hmr - Disables Hot Module Replacement (HMR). In this case, when a change in the code is applied, CLI will transfer the modified files and restart the application.
  • --env.* - Specifies additional flags that the bundler may process. May be passed multiple times. Supported additional flags:
    • --env.aot - creates Ahead-Of-Time build (Angular only).
    • --env.snapshot- creates Snapshot (only for release builds on Mac OS & for Android).
    • --env.uglify - provides basic obfuscation and smaller app size.
    • --env.report - creates a Webpack report inside a report folder in the root folder.
    • --env.sourceMap - creates inline source maps (useful for debbuging bundled app).
    • --env.hiddenSourceMap - creates sources maps in the root folder (useful for Crashlytics usage with bundled app in release).
  • --force - If set, skips the application compatibility checks and forces npm i to ensure all dependencies are installed. Otherwise, the command will check the application compatibility with the current CLI version and could fail requiring tns migrate.

Arguments

<Platform> is the target mobile platform for which you want to run your project. You can set the following target platforms:

  • android - Run your project on all Android devices and emulators.
  • ios - Run your project on all iOS devices and simulators.

Command Limitations

  • The command will work with all connected devices and running emulators on macOS. On Windows and Linux the command will work with Android devices only.
  • In case a platform is not specified and there's no running devices and emulators, the command will fail.
Command Description
appstore Lists applications registered in iTunes Connect.
appstore upload Uploads project to iTunes Connect.
build android Builds the project for Android and produces an APK that you can manually deploy on device or in the native emulator.
build ios Builds the project for iOS and produces an APP or IPA that you can manually deploy in the iOS Simulator or on device, respectively.
build Builds the project for the selected target platform and produces an application package that you can manually deploy on device or in the native emulator.
debug android Debugs your project on a connected Android device or in a native emulator.
debug ios Debugs your project on a connected iOS device or in a native emulator.
debug Debugs your project on a connected device or in a native emulator.
deploy Builds and deploys the project to a connected physical or virtual device.
run android Runs your project on a connected Android device or in a native Android emulator, if configured.
run ios Runs your project on a connected iOS device or in the iOS Simulator, if configured.
test init Configures your project for unit testing with a selected framework.
test android Runs the tests in your project on Android devices or native emulators.
test ios Runs the tests in your project on iOS devices or the iOS Simulator.