webpack.config.dev.js

const HtmlWebpackPlugin = require("html-webpack-plugin");
const path = require("path");
const webpack = require("webpack");

module.exports = {
  devtool: "eval",
  entry: ["babel/polyfill", "./website/index.js"],
  output: {
    path: "build",
    filename: "/static/[name].js"
  },
  plugins: [
    new HtmlWebpackPlugin({
      filename: "index.html",
      inject: true,
      template: "./website/index.html"
    }),
    new webpack.NoErrorsPlugin()
  ],
  module: {
    loaders: [
      {
        test: /\.js$/,
        loader: "babel",
        exclude: path.join(__dirname, "node_modules")
      },
      {
        test: /\.css$/,
        loaders: ["style", "css?modules&importLoaders=1", "cssnext"],
        exclude: path.join(__dirname, "node_modules")
      }
    ]
  },
  devServer: {
    contentBase: "build",
    port: 3456
  }
};