Webpack Setup

package.json

{
  "name": "repract",
  "version": "1.0.0",
  "description": "",
  "main": "./js/index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "babel-core": "^6.26.0",
    "babel-loader": "^7.1.2",
    "babel-preset-env": "^1.6.0",
    "babel-preset-es2015": "^6.24.1",
    "babel-preset-react": "^6.24.1",
    "css-loader": "^0.28.7",
    "node-sass": "^4.5.3",
    "sass-loader": "^6.0.6",
    "style-loader": "^0.19.0",
    "webpack": "^3.6.0"
  },
  "dependencies": {
    "axios": "^0.16.2",
    "history": "^4.7.2",
    "react": "^16.0.0",
    "react-dom": "^16.0.0",
    "react-router": "^4.2.0",
    "react-router-dom": "^4.2.2"
  }
}

Webpack.config,js

var path = require('path');
module.exports = {
// Entry Point
entry:'./src/js/index.js',

//Output point
output:{
  path: path.resolve(__dirname,'dist'),
  filename:'bundle.js'
},
module:{
  loaders:[
    {
      test:/\.js$/,
      exclude:/(node_modules)/,
      loader:'babel-loader',
      query:{
        presets:['env','react']
      }

    },
    {
      test:/\.sass$/,
      loader:'style-loader!css-loader!sass-loader'
    }
  ]
}

}