webpack配置

//webpack.config.js
const path = require("path")
const webpack = require("webpack")
var HtmlWebpackPlugin = require("html-webpack-plugin")
const CompressionPlugin = require("compression-webpack-plugin")
const { CleanWebpackPlugin } = require("clean-webpack-plugin")

module.exports = {
    mode: "development",
    // 入口文件
    entry: "./hello.ts",
    // 输出文件
    output: {
        filename: "main.js",
        path: path.resolve(__dirname, "dist")
    },
    plugins: [
        // 热打包
        new webpack.HotModuleReplacementPlugin(),
        // 清除上一次打包的dist目录里的文件
        new CleanWebpackPlugin(),
        // html文件打包插件
        new HtmlWebpackPlugin({
            template: path.join(__dirname, "hello.html")
        }),
        // 文件压缩插件
        new CompressionPlugin({
            test: /\.js$|\.html$|\.css/,
            threshold: 10240,
            deleteOriginalAssets: false
        })
    ],
    module: {
        rules: [
            //typescript加载器
            {
                test: /\.ts$/,
                use: "ts-loader"
            },
            // css打包加载器
            {
                test: /\.css$/,
                use: [{
                        loader: "style-loader"
                    },
                    {
                        loader: "css-loader"
                    },
                    {
                        loader: "postcss-loader"
                    }
                ]
            },
            // 图片打包加载器
            {
                test: /\.(png|jpg)$/,
                use: [{
                        loader: "url-loader",
                        options: {
                            limit: 8192
                        }
                    },
                    {
                        loader: "image-webpack-loader", // 压缩图片的加载器
                        options: {
                            bypassOnDebug: true
                        }
                    }
                ]
            },
            // sass文件的loader加载器
            {
                test: /\.scss$/,
                use: [{
                        loader: "style-loader"
                    },
                    {
                        loader: "css-loader"
                    },
                    {
                        loader: "postcss-loader"
                    },
                    {
                        loader: "sass-loader"
                    }
                ]
            }
        ]
    },
    resolve: {
        extensions: [".ts"]
    }
}