rollup-build.js

// rollup-build.js
const fs = require("fs");
const rollup = require("rollup");
const { babel, getBabelOutputPlugin } = require("@rollup/plugin-babel");
const del = require("rollup-plugin-delete");
const json = require("@rollup/plugin-json");
const commonjs = require("@rollup/plugin-commonjs");
const { terser } = require("rollup-plugin-terser");

// 获取根目录的'package.json'
const packageJSON = require("./package.json");
// 读取 生成模式 下需要的依赖包
const packageJSONForProduction = {
    name: packageJSON.name,
    dependencies: packageJSON.dependencies,
};

const inputOptions = {
    input: "./app.js",
    plugins: [
        // 打包前先清空输出文件夹
        del({ targets: "./server/*" }),

        // babel 相关的配置, 主要是做兼容
        getBabelOutputPlugin({
            presets: [["@babel/preset-env", { targets: { node: "current" } }]],
            plugins: [["@babel/plugin-transform-runtime", { useESModules: false }]],
        }),
        babel({ babelHelpers: "bundled", exclude: "node_modules/**" }),

        // 这里是把入口文件(app.js)以外的业务代码也进行打包(require进来的文件)
        json(),
        commonjs(),

        // 代码的压缩或混淆
        terser(),
    ],
};
const outputOptions = { dir: "./server", format: "cjs" };

async function build() {
    // create a bundle
    const bundle = await rollup.rollup(inputOptions);

    // generate code and a sourcemap
    // const { code, map } = await bundle.generate(outputOptions);

    // or write the bundle to disk
    await bundle.write(outputOptions);

    // 生成生产模式的 package.json, 在服务器上使用
    const writeStream = fs.createWriteStream("./server/package.json");
    writeStream.write(JSON.stringify(packageJSONForProduction));
}

build();