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Alex Hunt
9e068ac163
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/40766 This changeset allows users to opt into the new debugger frontend experience by passing `--experimental-debugger` to `react-native start`. **We are defaulting this option to `true`** for now, but will continue to evaluate this feature before 0.73 ships. It restores Flipper (via `flipper://`) as the default handling for `/open-debugger` (matching 0.72 behaviour) when this flag is not enabled. Detailed changes: - Replaces `enableCustomDebuggerFrontend` experiment in `dev-middleware` with `enableNewDebugger`. The latter now hard-swaps between the Flipper and new launch flows. - Removes now-unused switching of `devtoolsFrontendUrl`. - Implements `deprecated_openFlipperMiddleware` (matching previous RN CLI implementation). - Disables "`j` to debug" key handler by default. - Marks "`j` to debug" and `/open-debugger` console logs as experimental. Changelog: [Changed][General] Gate new debugger frontend behind `--experimental-debugger` flag, restore Flipper as base launch flow Reviewed By: motiz88 Differential Revision: D50084590 fbshipit-source-id: 5234634f20110cb7933b1787bd2c86f645411fff
@react-native/community-cli-plugin
This is an internal dependency of React Native. Please don't depend on it directly.
CLI entry points supporting core React Native development features.
Formerly @react-native-community/cli-plugin-metro.
Commands
start
Start the React Native development server.
Usage
npx react-native start [options]
Options
| Option | Description |
|---|---|
--port <number> |
Set the server port. |
--host <string> |
Set the server host. |
--projectRoot <path> |
Set the path to the project root. |
--watchFolders <list> |
Specify additional folders to be added to the watch list. |
--assetPlugins <list> |
Specify additional asset plugins. |
--sourceExts <list> |
Specify additional source extensions to bundle. |
--max-workers <number> |
Set the maximum number of workers the worker-pool will spawn for transforming files. Defaults to the number of the cores available on your machine. |
--transformer <string> |
Specify a custom transformer. |
--reset-cache |
Remove cached files. |
--custom-log-reporter-path <string> |
Specify a module path exporting a replacement for TerminalReporter. |
--https |
Enable HTTPS connections. |
--key <path> |
Specify path to a custom SSL key. |
--cert <path> |
Specify path to a custom SSL cert. |
--config <string> |
Path to the CLI configuration file. |
--no-interactive |
Disable interactive mode. |
bundle
Build the bundle for the provided JavaScript entry file.
Usage
npx react-native bundle --entry-file <path> [options]
Options
| Option | Description |
|---|---|
--entry-file <path> |
Set the path to the root JavaScript entry file. |
--platform <string> |
Set the target platform (either "android" or "ios"). Defaults to "ios". |
--transformer <string> |
Specify a custom transformer. |
--dev [boolean] |
If false, warnings are disabled and the bundle is minified. Defaults to true. |
--minify [boolean] |
Allows overriding whether bundle is minified. Defaults to false if --dev is set. Disabling minification can be useful for speeding up production builds for testing purposes. |
--bundle-output <string> |
Specify the path to store the resulting bundle. |
--bundle-encoding <string> |
Specify the encoding for writing the bundle (https://nodejs.org/api/buffer.html#buffer_buffer). |
--sourcemap-output <string> |
Specify the path to store the source map file for the resulting bundle. |
--sourcemap-sources-root <string> |
Set the root path for source map entries. |
--sourcemap-use-absolute-path |
Report SourceMapURL using its full path. |
--max-workers <number> |
Set the maximum number of workers the worker-pool will spawn for transforming files. Defaults to the number of the cores available on your machine. |
--assets-dest <string> |
Specify the directory path for storing assets referenced in the bundle. |
--reset-cache |
Remove cached files. |
--read-global-cache |
Attempt to fetch transformed JS code from the global cache, if configured. Defaults to false. |
--config <string> |
Path to the CLI configuration file. |
ram-bundle
Build the RAM bundle for the provided JavaScript entry file.
Usage
npx react-native ram-bundle --entry-file <path> [options]
Options
Accepts all options supported by bundle and the following:
| Option | Description |
|---|---|
--indexed-ram-bundle |
Force the "Indexed RAM" bundle file format, even when building for Android. |
Contributing
Changes to this package can be made locally and tested against the rn-tester app, per the Contributing guide. During development, this package is automatically run from source with no build step.