Files
Phil Pluckthun b054540092 Mark @react-native/metro-config as optional peer to fix warning (#53314)
Summary:
The `react-native/metro-config` peer was added in https://github.com/facebook/react-native/commit/fe2bcbf4ba7ce983fac0cd09727c165517b6337f / https://github.com/facebook/react-native/issues/51836 by robhogan

Side-note: It's pulled in via `react-native/community-cli-plugin` which is a direct dependency of `react-native` for the `scripts/bundle.js` script. While, for expo, we'd love to find a way to make this an optional dependency (to avoid excessive deps that `expo` replaces otherwise), for now, it's a direct dependency.

The problem here is that this isn't optional, which means:
- with auto-installing peer dependencies it is directly fulfilled (while `react-native-community/cli` is already marked as optional and skipped)
- with legacy/non-auto peer-dependencies it is flagged as missing, but in an Expo project it wouldn't make sense to install directly

This causes a **package manager regression in the form of either a peer dependency warning**, that shouldn't be fulfilled in an Expo project, or (in the best case scenario) pulls in dependencies [that a user does not need](https://npmgraph.js.org/?q=%40react-native%2Fmetro-config#zoom=w&select=exact%3A%40react-native%2Fmetro-config%400.81.0).

An error message is already in place to inform the user of this being missing when it's not installed, so marking it as optional seems appropriate.

## Changelog:

[INTERNAL] [FIXED] Mark added `react-native/metro-config` peer dependency as optional

<!-- Help reviewers and the release process by writing your own changelog entry.

Pick one each for the category and type tags:

[ANDROID|GENERAL|IOS|INTERNAL] [BREAKING|ADDED|CHANGED|DEPRECATED|REMOVED|FIXED|SECURITY] - Message

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Pull Request resolved: https://github.com/facebook/react-native/pull/53314

Test Plan:
Warnings like the following won't occur in fresh Expo (54/preview/`next`) projects
```
warning "workspace-aggregator-484d9ec3-587b-43cb-97de-4dcce3876578 > microfoam-mobile > react-native > react-native/community-cli-plugin@0.81.0" has unmet peer dependency "react-native/metro-config@*".
```

Reviewed By: cortinico

Differential Revision: D80450287

Pulled By: robhogan

fbshipit-source-id: c622fd4c24025676c0ec74de826f863f1e291669
2025-08-24 14:18:42 -07:00
..

@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-community/cli 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.
--client-logs [Deprecated] Enable plain text JavaScript log streaming for all connected apps.

bundle

Build the bundle for the provided JavaScript entry file.

Usage

npx @react-native-community/cli 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).
--resolver-option <string...> Custom resolver options of the form key=value. URL-encoded. May be specified multiple times.
--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.

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.