webpack.config.js

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

module.exports = {
  entry: ["./src/js/app.js"],
  output: {
    path: path.resolve(__dirname, "dist"),
    filename: "js/[name].js"
  },
  devServer: {
    contentBase: "./dist"
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        loader: 'style-loader!css-loader'
      },
      {
        test: /\.scss$/,
        use: [{
          loader: "style-loader"
        }, {
          loader: "css-loader"
        }, {
          loader: "sass-loader",
          options: {
            includePaths: ["absolute/path/a", "absolute/path/b"]
          }
        }]
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      }
      ,
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader"
          }
        ]
      },
      {
        test: /\.(png|jpg|gif|svg|eot|ttf|woff|woff2)$/,
        loader: 'url-loader',
        options: {
          limit: 10000
        }
      },
      {
        test: /\.(png|jpg|gif)$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              limit: 8192
            }
          }
          ]
      },
      {
        test: /\.jsx?$/,
        exclude: /firebase/,
        use: {
          loader: "babel-loader"
        }
      }
    ]
  },
  plugins: [
    new HtmlWebPackPlugin({
      template: "./src/index.html",
      filename: "./index.html"
    })
  ],
  resolve: {
    extensions: ['.js', '.jsx', '.css'], //An empty string is no longer required.
    modules: [
      'node_modules'
    ]
  }
};