rnx-kit (esbuild metafile)

With @rnx-kit/metro-serializer-esbuild (tree shaking), ask it to write an esbuild metafile via the treeShake options in package.json:

{
  "rnx-kit": {
    "bundle": {
      "treeShake": {
        "metafile": "esbuild-meta.json"
      }
    }
  }
}

Then create a production bundle with react-native rnx-bundle --platform ios --dev false (the path to the metafile is printed in the build log).

The UI and CLI accept the metafile as is (sizes are after tree shaking and minification):

npx react-native-bundle-discovery-ui esbuild-meta.json
npx react-native-bundle-discovery-cli esbuild-meta.json