webpack.config.js

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

module.exports = {
  entry: {
    app: "./src/app.js"
  },
  devtool: "inline-source-map",
  output: {
    path: path.resolve(__dirname, "./dist"),
    filename: "app.js"
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [{ loader: "style-loader" }, { loader: "css-loader" }]
      },
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader"
          }
        ]
      }
    ]
  },
  devServer: {
    hot: true,
    port: 3000
  },
  plugins: [
    new HtmlWebPackPlugin({
      inject: true,
      template: "templates/index.html"
    }),
    new webpack.HotModuleReplacementPlugin()
  ]
};