A metro minifier based on javascript-obfuscator for React Native
yarn add -D metro-minify-obfuscatoror
npm i --save-dev metro-minify-obfuscatormodule.exports = {
transformer: {
...
minifierPath: 'metro-minify-obfuscator',
minifierConfig: {
defaultMinifierPath: require('metro-minify-terser'),
filter: (filename) => true,
includeNodeModules: true,
trace: false,
obfuscatorOptions: {
// put additional javscript-obfuscator configuration here
}
},
},
};module.exports = {
transformer: {
...
minifierPath: 'metro-minify-obfuscator', // <- add this
minifierConfig: {
defaultMinifierPath: require('metro-minify-uglify'), // required if filter/includeNodeModules options is set, can be metro-minify-uglify or metro-minify-terser dependes on RN version / available installed minifier
filter: (filename) => true, // return true to obfuscate
includeNodeModules: true, // set false to ignore node_modules from obfuscation
trace: false, // show output log
obfuscatorOptions: {
// put additional javscript-obfuscator configuration here
}
},
},
};- you can add additional obfuscation config to the
minifierConfigproperties (⚠️ NOT ALL OPTION IS GUARANTEED WORKING ON REACT-NATIVE, IT MIGHT BREAK YOUR APPS 🙈 ) - run packager with
--reset-cacheargument to clear metro cache
- For React Native 0.73+, it's highly recommended to use
metro-minify-terseras the default minifier - Terser provides better support for modern JavaScript ES6+ features and improved performance
- For React Native versions below 0.73, you can continue using
metro-minify-uglify
{
"stringArray": false,
"compact": true,
"controlFlowFlattening": true,
"controlFlowFlatteningThreshold": 0.75,
"identifierNamesGenerator": "hexadecimal",
"numbersToExpressions": true,
"splitStrings": true,
"splitStringsChunkLength": 3,
"transformObjectKeys": true,
"simplify": true,
"disableConsoleOutput": true,
"log": false,
"selfDefending": true,
"unicodeEscapeSequence": true
}- metro-minify-obfuscator, obfuscate on minification step, can generate correct source maps
- obfuscator-io-metro-plugin, obfuscate on transformation, doesn't give 'working' source maps for now, if you don't care with source maps you can use use it
- react-native-obfuscating-transformer, obfuscate on transformation, if you combine it with
--minify trueit will shown that code looks doesn't obfuscated
-
v1.0.x - Add additional option to filter / exclude node_modules file from obfuscation.
⚠️ upgrading to this version need update to your metro.config.js please be aware -
v0.x.x - Initial fork from
metro-minify-uglifyconfigured with JSO library