Handlebars : Can't resolve 'fs'

正常情况下我们安装并配置好了handlebars模板引擎：

npm install handlebars -S
npm install handlebars-loader -D
---------------------------------
rules: [
	{
		test: /\.hbs$/,
		use: 'handlebars'
	}
]

然后就会报错:
== Can’t resolve ‘fs’ ==
解决办法：
添加别名

alias: {
	handlebars: __dirname + '/node_modules/handlebars/dist/handlebars.min.js'
}

解决问题的导航