React debug in browser when using bundle.js

Question

Tools: Chrome Developer Tools, ReactJs and Webpack

Maybe it was when I switched to bundling with webpack, but initially when I started my project I was able to bundle my

Answer 1

Its updated now you have to just include mode:"development" in top of module.exports and set a debugger in any where in your .js file it will work and open chrome devtools
webpack.config.js:

const path = require('path')
module.exports = {
    mode: 'development',
entry: path.join(__dirname,'src/js','index.js'),
  output: {
    path: path.join(__dirname, 'dist'),
      filename: 'build.js'
   },
  module: {}
}

check

Answer 2

After a long time of pointlessly using a bunch of print statements I finally went back and figured out how to do this.

Here is how you get your ability to use breakpoints again after you bundle:

1)

Go to your webpack.config.js file and set devtools from "true" to "source-map" or one of the other options that @MichelleTilley explained in her answer.

webpack.config.js(here is an example)

module.exports = {
  entry: "./js/app.js",
  output: {
    filename: "js/bundle.js"
  },
  debug: true,
  devtool: "#eval-source-map",
  module: {
    loaders: [
      {
        test: /\.jsx?$/,
        exclude: /(node_modules|bower_components)/,
        loader: 'babel'
      }
    ]
  }
};

2)

Also like @MichelleTilley explained in her answer you may need to enable the devtools options in the Chrome.

3)

After this the when you go to debug you will have to look for a new folder just named "." that is super hard to notice!

Thanks to the Stackoverflow answer below with the posted images I finally found where that folder was.

Configure webpack to allow browser debugging

Answer 3

You can use the devtool option to have webpack generate source maps, which (when enabled in the Chrome devtools options) will allow Chrome to translate the code in bundle.js (which may even be minified) into the original source code.

For development, I set this option to eval-source-map or cheap-eval-source-map, and for production I either leave this off or generate separate source map files with source-map.