webpack4.0 相關插件集

let HtmlWebpackPlugin = require('html-webpack-plugin');//網頁模闆插件

let MiniCssExtractPlugin = require('mini-css-extract-plugin');//樣式打包插件

let OptimizeCss = require('optimize-css-assets-webpack-plugin');//樣式資源優化項  配合 UglifyJsPlugin使用，因為樣式壓縮js不會壓縮要用此插件來在做一次壓縮

let UglifyJsPlugin = require('uglifyjs-webpack-plugin');//js壓縮插件

const { CleanWebpackPlugin } = require("clean-webpack-plugin");//清空編譯目錄插件