let HtmlWebpackPlugin = require('html-webpack-plugin');//網頁模板插件
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,因爲樣式壓縮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