实现脚本

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const fs = require('fs');
const https = require('https');
const path = require('path');

const folderPath = './dependency-tars';

// 判断文件夹是否存在
if (!fs.existsSync(folderPath)) {
    // 如果不存在则创建文件夹
    fs.mkdirSync(folderPath);
}

// 读取package-lock.json文件
fs.readFile('package-lock.json', 'utf8', (err, data) => {
    if (err) {
        console.error('读取文件出错:', err);
        return;
    }

    try {
        const packageLock = JSON.parse(data);
        const dependencies = packageLock.packages;
        const tarballUrls = [];

        // 遍历所有依赖并打印resolved属性的值
        for (const packageName in dependencies) {
            if (packageName && dependencies.hasOwnProperty(packageName)) {
                const dependency = dependencies[packageName];
                const resolved = dependency.resolved;
                tarballUrls.push(resolved);
            }
        }

        console.log(`解析完毕，共${tarballUrls.length}个依赖，开始下载依赖`);

        downloadFiles(tarballUrls);

    } catch (error) {
        console.error('解析JSON出错:', error);
    }
});

function downloadFiles(urls) {
    let count = 0;

    for (const url of urls) {
        const fileName = path.basename(url); // 获取文件名
        const filePath = path.join(folderPath, fileName); // 将文件名和文件夹路径拼接

        // 下载文件
        const file = fs.createWriteStream(filePath);
        https.get(url, (response) => {
            if (response.statusCode === 200) {
                response.pipe(file);
                console.log(`${fileName}下载成功！`);

                count++;

                if (count === urls.length) {
                    console.log('所有文件下载完成。');
                }
            } else if (response.statusCode === 301 || response.statusCode === 302) {
                const redirectUrl = response.headers.location;
                console.log(`文件${fileName}发生重定向，新的下载链接为: ${redirectUrl}`);

                https.get(redirectUrl, (redirectResponse) => {
                    redirectResponse.pipe(file);
                    console.log(`${fileName}下载成功！`);

                    count++;

                    if (count === urls.length) {
                        console.log('所有文件下载完成。');
                    }
                }).on('error', (error) => {
                    console.error(`下载${fileName}出错: ${error.message}`);
                });
            } else {
                console.error(`下载${fileName}出错，状态码为: ${response.statusCode}`);
            }
        }).on('error', (error) => {
            console.error(`下载${fileName}出错: ${error.message}`);
        });
    }
}