Webpack basic setup

new webpack config

module.exports = {
  entry: './app/index.js',

  output: {
    path: './dist/',
    filename: 'bundle.js'
  },

  devServer: {
    inline: true,
    port: 8080
  },

  module: {
    loaders: [
      {
        test: /\.(png|jpg)$/,
        loader: "url-loader"
      },
      {
        test: /\.scss$/,
        loader: 'style-loader!css-loader!sass-loader'
      },
      {
        test: /\.js?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',

        query: {
          presets: [
            'es2015'
          ]
        }
      }

    ]
  }
}

package.json

{
  "name": "redux-tuts",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "start": "webpack-dev-server",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "babel": "^6.5.2",
    "babel-cli": "^6.18.0",
    "babel-core": "^6.21.0",
    "babel-preset-env": "^1.1.4",
    "pubsub-js": "^1.5.4",
    "redux": "^3.6.0",
    "webpack": "^1.14.0",
    "webpack-dev-server": "^1.16.2"
  },
  "devDependencies": {
    "babel-cli": "^6.18.0",
    "babel-core": "^6.21.0",
    "babel-loader": "^6.2.10",
    "babel-preset-env": "^1.1.4",
    "babel-preset-es2015": "^6.18.0",
    "redux-devtools": "^3.3.1"
  }
}

webpack.config.js

module.exports = {
  entry: './app/index.js',

  output: {
    path: './dist/',
    filename: 'bundle.js'
  },

  devServer: {
    inline: true,
    port: 8080
  },

  module: {
    loaders: [
      {
        test: /\.js?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',

        query: {
          presets: [
            'es2015'
          ]
        }
      }
    ]
  }
}