webpack.config.js

const { resolve } = require("path");

const webpack = require("webpack");
const ExtractTextPlugin = require("extract-text-webpack-plugin");
const CopyWebpackPlugin = require("copy-webpack-plugin");
const OpenBrowserPlugin = require("open-browser-webpack-plugin");

const config = {
  devtool: "cheap-module-eval-source-map",

  entry: [
    "react-hot-loader/patch",
    "webpack-dev-server/client?http://localhost:8080",
    "webpack/hot/only-dev-server",
    "./main.js",
    "./assets/scss/main.scss"
  ],

  output: {
    filename: "bundle.js",
    path: resolve(__dirname, "dist"),
    publicPath: ""
  },

  context: resolve(__dirname, "app"),

  devServer: {
    hot: true,
    contentBase: resolve(__dirname, "build"),
    historyApiFallback: true,
    publicPath: "/"
  },

  resolve: {
    extensions: [".js", ".jsx"]
  },

  module: {
    rules: [
      {
        enforce: "pre",
        test: /\.jsx?$/,
        exclude: /node_modules/,
        loader: "eslint-loader"
      },
      {
        test: /\.js$/,
        use: ["source-map-loader"],
        enforce: "pre"
      },
      {
        test: /\.jsx?$/,
        loaders: ["babel-loader"],
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"]
      },
      {
        test: /\.scss$/,
        exclude: /node_modules/,
        use: ["css-hot-loader"].concat(
          ExtractTextPlugin.extract({
            fallback: "style-loader",
            use: [
              "css-loader",
              {
                loader: "sass-loader",
                query: {
                  sourceMap: false
                }
              }
            ],
            publicPath: "../"
          })
        )
      },
      {
        test: /\.(png|jpg|gif)$/,
        use: [
          {
            loader: "url-loader",
            options: {
              limit: 8192,
              mimetype: "image/png",
              name: "images/[name].[ext]"
            }
          }
        ]
      },
      {
        test: /\.eot(\?v=\d+.\d+.\d+)?$/,
        use: [
          {
            loader: "file-loader",
            options: {
              name: "fonts/[name].[ext]"
            }
          }
        ]
      },
      {
        test: /\.woff(2)?(\?v=[0-9]\.[0-9]\.[0-9])?$/,
        use: [
          {
            loader: "url-loader",
            options: {
              limit: 8192,
              mimetype: "application/font-woff",
              name: "fonts/[name].[ext]"
            }
          }
        ]
      },
      {
        test: /\.[ot]tf(\?v=\d+.\d+.\d+)?$/,
        use: [
          {
            loader: "url-loader",
            options: {
              limit: 8192,
              mimetype: "application/octet-stream",
              name: "fonts/[name].[ext]"
            }
          }
        ]
      },
      {
        test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
        use: [
          {
            loader: "url-loader",
            options: {
              limit: 8192,
              mimetype: "image/svg+xml",
              name: "images/[name].[ext]"
            }
          }
        ]
      }
    ]
  },

  plugins: [
    new webpack.LoaderOptionsPlugin({
      test: /\.jsx?$/,
      options: {
        eslint: {
          configFile: resolve(__dirname, ".eslintrc"),
          cache: false
        }
      }
    }),
    new webpack.optimize.ModuleConcatenationPlugin(),
    new ExtractTextPlugin({
      filename: "./styles/style.css",
      disable: false,
      allChunks: true
    }),
    new CopyWebpackPlugin([{ from: "vendors", to: "vendors" }]),
    new OpenBrowserPlugin({ url: "http://localhost:8080" }),
    new webpack.HotModuleReplacementPlugin()
  ]
};

module.exports = config;