React Native JS Bundle Source Mapping for Debugging

app.js

var sourceMap = require('source-map');
var convert = require('convert-source-map');
var fs = require('fs');

var source = 'PATH_TO_APP/Myapp.app/main.jsbundle';
var content = fs.readFileSync(source, 'utf8');
var json = convert.fromComment(content).toJSON();

var smc = new sourceMap.SourceMapConsumer(json);
var position = smc.originalPositionFor({
    line: 701,
    column: 8
});

console.log(position);

package.json

{
  "name": "rct_debug",
  "version": "1.0.0",
  "description": "Debug React Native",
  "main": "app.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "Brennan Stehling",
  "license": "MIT",
  "dependencies": {
    "convert-source-map": "^1.5.0",
    "source-map": "^0.5.6"
  }
}