Can't make it work

Hi I am trying to use this module. I created the rn-cli.config.js and transformer.js file in my project root folder and kept the default obfuscatingTransformer options (So module.exports = obfuscatingTransformer({})). But this doesn’t seem to work. The index.android.bundle file in the generated app-release.apk still remains unobfuscated (I performed a gradlew assembleRelease like usual to create the bundle before react-native run-android --variant=release) What am I doing wrong?

[AustinZuniga]

I finally figured out how to make it work after several test.

my react and react native version:

 "react": "16.9.0",
 "react-native": "0.61.5",

install other dependencies needed:

npm install babylon --save
npm install --save babel-traverse

transformer.js

const obfuscatingTransformer = require("react-native-obfuscating-transformer")
const filter = filename => { 
  return filename.startsWith("src");
};

module.exports = obfuscatingTransformer({
// this configuration is based on https://github.com/javascript-obfuscator/javascript-obfuscator
  obfuscatorOptions:{
    compact: true,
    controlFlowFlattening: false,
    deadCodeInjection: false,
    debugProtection: false,
    debugProtectionInterval: false,
    disableConsoleOutput: true,
    identifierNamesGenerator: 'hexadecimal',
    log: false,
    renameGlobals: false,
    rotateStringArray: true,
    selfDefending: true,
    shuffleStringArray: true,
    splitStrings: false,
    stringArray: true,
    stringArrayEncoding: false,
    stringArrayThreshold: 0.75,
    unicodeEscapeSequence: false
  },
  upstreamTransformer: require('metro-react-native-babel-transformer'),
  emitObfuscatedFiles: false,
  enableInDevelopment: true,
  filter: filter,
  trace: true
})

metro.config.js

module.exports = {
  transformer: {
    getTransformOptions: async () => ({
      transform: {
        experimentalImportSupport: false,
        inlineRequires: false,
      },
    }),
    babelTransformerPath: require.resolve("./transformer")   // add here the transformer.js
  },
};

NOTE:

set emitObfuscatedFiles to true in obfuscatorOptions to emit the obfuscated versions of files alongside their originals, for comparison.

If you’re building in release, you can also compare the generated index.android.bundle (located in \android\app\build\generated\assets\react\release) with and without using the react-native-obfuscating-transformer using online diff tool to see the difference

[whoami-shubham]

try this https://www.npmjs.com/package/obfuscator-io-metro-plugin