Write HTML with Handlebars and dev-server watching files

package.json

{
  "name": "raw-hbs",
  "version": "1.0.0",
  "main": "index.js",
  "author": "kazuma1989 <funifuni.1204@gmail.com>",
  "license": "MIT",
  "scripts": {
    "start": "webpack-dev-server",
    "build": "cross-env NODE_ENV=production webpack"
  },
  "devDependencies": {
    "cross-env": "^5.1.3",
    "handlebars": "^4.0.11",
    "handlebars-loader": "^1.6.0",
    "html-webpack-plugin": "^2.30.1",
    "webpack": "^3.10.0",
    "webpack-dev-server": "^2.11.1"
  }
}

webpack.config.js

const HtmlWebpackPlugin = require('html-webpack-plugin');
const pages = [
  'index',
  'search',
  'detail',
];

module.exports = {
  entry: __dirname + '/src/main.js',
  output: {
    path: __dirname + '/dist',
    filename: '[name].[chunkhash:8].js'
  },
  module: {
    loaders: [
      {
        test: /\.hbs$/,
        loader: 'handlebars-loader'
      }
    ]
  },
  devServer: {
    open: true,
    // Expose the dev server to the internet
    host: process.env.HOST || '0.0.0.0',
    disableHostCheck: true
  },
  plugins: pages.map(page =>
    new HtmlWebpackPlugin({
      filename: page + '.html',
      template: __dirname + '/src/' + page + '.hbs',
      chunks: []
    })
  )
};