10 loader - loader configuration file is processed less

The first step: install package

cnpm i less-loader -D

Installing WARNING

peerDependencies WARNING less-loader @ * requires a peer of less@^2.3.1 || ^ 3.0.0 but none was installed
following command to install less
less less-loader internal dependent, does not need to be displayed the third-party modules webpack.config.js less defined to go inside the loader, as long as installed on the line

cnpm i less -D

Step Two: Configure rules

 module:{//这个节点，用于配置所有第三方模块加载器
        rules:[//所有第三方模块的匹配规则           
            {test:/\.less$/,use:['style-loader','css-loader','less-loader']},//配置处理.less文件的第三方loader规则
        ]
    }