webpack.optimize.CommonsChunkPlugin 报错

webpack中文指南在代码分离遇到了一个报错：

webpack4 Error: webpack.optimize.CommonsChunkPlugin has been removed, please use config.optimization.splitChunks ins
因而百度了对应文章进行解决

optimization: {
        splitChunks: {
            cacheGroups: {
                commons: {
                    name: "commons",
                    chunks: "initial",
                    minChunks: 2
                }
            }
        }
    },