const path = require('path');
const HTMLWebpackPlugin = require('html-webpack-plugin'); // 自动生成 html 插件
module.exports = {
    mode: "none",
    entry: "./src/index.ts",
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: "barry.js",
        //配置打包环境,告诉webpack不使用箭头函数
        environment: {
            arrowFunction: false
        }
    },
    module: {
        rules: [
            {
                test: /\.ts$/,
                use: [
                    {
                        // 指定加载器
                        loader: "babel-loader",
                        // 设置 babel
                        options: {
                            // 设置预定义环境
                            presets: [
                                [
                                    // 指定环境插件
                                    "@babel/preset-env",
                                    {
                                        // 要兼容的目标浏览器
                                        targets: {
                                            "chrome": "88",
                                            "ie": "11"
                                        },
                                        // core-js 使用版本
                                        "corejs": "3",
                                        "useBuiltIns": "usage"
                                    }
                                ]
                            ]
                        }
                    },
                    "ts-loader"],
                exclude: /node-modules/
            }
        ]
    },
    // 配置 webpack 插件
    plugins: [
        new HTMLWebpackPlugin({template: "./src/index.html"})
    ],
    // 用来设置引用模块
    resolve: {
        extensions: ['.ts', '.js']
    }
}