Manual Download Electron 手动下载 Electron

README.md

Manual Download Electron

手动下载 electron 并添加到缓存目录中

1. Get latest version for current os

获取适合当前系统的最新版本

node mde.js

# https://github.com/electron/electron/releases/download/v41.0.3/electron-v41.0.3-win32-x64.zip
# C:\Users\learnshare\AppData\Local\Cache\electron\fef4e930717eea902a8ae3e4a245018a80bfc75e41963b3b41c41eb6c098c83f\electron-v41.0.3-win32-x64.zip

2. Get specific version for current os

获取适合当前系统的指定版本

node mde.js 22.3.16

# https://github.com/electron/electron/releases/download/v22.3.16/electron-v22.3.16-win32-x64.zip
# C:\Users\learnshare\AppData\Local\Cache\electron\3db385b352e23d0c2d92c5d51ec91dfcdbfb76196d8b46c0acefe06f676d9e00\electron-v22.3.16-win32-x64.zip

Continue npm install with cache file

继续 npm install 即可使用缓存文件

mde.js

#!/usr/bin/env node

const https = require('https');
const os = require('os');
const path = require('path');
const crypto = require('crypto');
const url = require('url');

// ===== 1. 平台 & 架构映射 =====
function getPlatform() {
  const platform = process.platform;

  switch (platform) {
    case 'win32':
      return 'win32';
    case 'darwin':
      return 'darwin';
    case 'linux':
      return 'linux';
    default:
      throw new Error(`Unsupported platform: ${platform}`);
  }
}

function getArch() {
  const arch = process.arch;

  switch (arch) {
    case 'x64':
      return 'x64';
    case 'arm64':
      return 'arm64';
    case 'ia32':
      return 'ia32';
    default:
      throw new Error(`Unsupported arch: ${arch}`);
  }
}

// ===== 2. 获取最新 Electron 版本 =====
function getLatestVersion() {
  return new Promise((resolve, reject) => {
    https.get('https://registry.npmjs.org/electron/latest', (res) => {
      let data = '';

      res.on('data', chunk => data += chunk);
      res.on('end', () => {
        try {
          const json = JSON.parse(data);
          resolve(json.version);
        } catch (err) {
          reject(err);
        }
      });
    }).on('error', reject);
  });
}

// ===== 3. 构造下载 URL =====
function getDownloadURL(version, platform, arch) {
  const base = 'https://github.com/electron/electron/releases/download';
  const artifactName = 'electron';
  const filename = `${artifactName}-v${version}-${platform}-${arch}.zip`;
  return `${base}/v${version}/${filename}`;
}

// ===== 4. 计算缓存目录（对齐 @electron/get 逻辑）=====
function getCacheDirectory(downloadUrl) {
  const parsedDownloadUrl = url.parse(downloadUrl);
  const { pathname } = parsedDownloadUrl;

  // 去掉 filename，只保留目录部分
  const strippedUrl = url.format({
    protocol: parsedDownloadUrl.protocol,
    host: parsedDownloadUrl.host,
    pathname: path.dirname(pathname || 'electron')
  });

  return crypto.createHash('sha256').update(strippedUrl).digest('hex');
}

// ===== 5. 获取缓存根目录 =====
function getCacheRoot() {
  // 对齐 env-paths('electron', { suffix: '' }).cache 的逻辑
  const platform = process.platform;
  const home = os.homedir();

  switch (platform) {
    case 'win32':
      return path.join(home, 'AppData', 'Local', 'Cache', 'electron');
    case 'darwin':
      return path.join(home, 'Library', 'Caches', 'electron');
    case 'linux':
      return path.join(home, '.cache', 'electron');
    default:
      throw new Error(`Unsupported platform: ${platform}`);
  }
}

// ===== 6. 获取文件名 =====
function getFileName(version, platform, arch) {
  return `electron-v${version}-${platform}-${arch}.zip`;
}

// ===== 主流程 =====
(async () => {
  try {
    // 获取版本（从参数或 npm）
    let version = process.argv[2];
    if (!version) {
      console.log('未指定版本，正在查询最新版本...');
      version = await getLatestVersion();
    }

    // 获取平台信息
    const platform = getPlatform();
    const arch = getArch();

    // 构造下载 URL
    const downloadUrl = getDownloadURL(version, platform, arch);
    const fileName = getFileName(version, platform, arch);

    // 计算缓存路径
    const cacheRoot = process.env.electron_config_cache || getCacheRoot();
    const cacheDir = getCacheDirectory(downloadUrl);
    const cachePath = path.join(cacheRoot, cacheDir, fileName);

    // 输出结果
    console.log('\n========================================');
    console.log('Electron 手动下载信息');
    console.log('========================================\n');
    console.log(`版本:       ${version}`);
    console.log(`平台:       ${platform}`);
    console.log(`架构:       ${arch}`);
    console.log(`\n📥 下载 URL:`);
    console.log(`${downloadUrl}`);
    console.log(`\n💾 缓存路径:`);
    console.log(`${cachePath}`);
    console.log(`\n💡 说明:`);
    console.log(`1. 下载上述 URL 的 zip 文件`);
    console.log(`2. 将文件保存到缓存路径`);
    console.log(`3. 在项目中继续完成 electron 安装`);
    console.log('\n========================================\n');

  } catch (err) {
    console.error('错误:', err.message);
    process.exit(1);
  }
})();