Function generateBundle

packages/dev/s2-docs/scripts/generateMcpb.mjs:119–221

* Generate an MCPB bundle for a given library. This makes the MCP servers easier to install in * certain MCP clients like Claude Desktop. Reference: https://github.com/modelcontextprotocol/mcpb.

(libraryName, config)

 * certain MCP clients like Claude Desktop. Reference: https://github.com/modelcontextprotocol/mcpb.
 */
async function generateBundle(libraryName, config) {
  const packageJsonPath = path.join(config.packageDir, 'package.json');
  const packageJson = JSON.parse(fs.readFileSync(packageJsonPath, 'utf8'));
  const stagingDir = path.join(config.outputDir, config.extensionName);

  fs.rmSync(stagingDir, {recursive: true, force: true});
  fs.mkdirSync(stagingDir, {recursive: true});

  for (const dir of config.srcDirs) {
    if (!fs.existsSync(dir.from)) {
      throw new Error(
        `Missing built MCP output at ${dir.from}. Build ${config.packageName} first.`
      );
    }
    copyDirectory(dir.from, path.join(stagingDir, dir.to));
  }

  const bundledPackages = new Set();
  for (const dependency of Object.keys(packageJson.dependencies || {})) {
    copyDependencyTree(dependency, path.join(stagingDir, 'node_modules'), bundledPackages);
  }

  // Convert SVG icon to 512x512 PNG for the bundle.
  const iconFile = 'icon.png';
  let svg = fs.readFileSync(config.iconSvg, 'utf8');
  // The React Aria favicon uses light-dark() CSS which sharp doesn't support.
  // Replace it with the dark-mode color so the icon works on any background.
  svg = svg.replace(/light-dark\([^,]+,\s*([^)]+)\)/, '$1');
  await sharp(Buffer.from(svg))
    .resize(448, 448, {fit: 'contain', background: {r: 0, g: 0, b: 0, alpha: 0}})
    .extend({top: 32, bottom: 32, left: 32, right: 32, background: {r: 0, g: 0, b: 0, alpha: 0}})
    .png()
    .toFile(path.join(stagingDir, iconFile));

  fs.writeFileSync(
    path.join(stagingDir, 'package.json'),
    JSON.stringify(
      {
        name: config.extensionName,
        version: packageJson.version,
        private: true,
        type: 'module'
      },
      null,
      2
    ) + '\n'
  );

  fs.writeFileSync(
    path.join(stagingDir, 'manifest.json'),
    JSON.stringify(
      {
        manifest_version: '0.3',
        name: config.extensionName,
        display_name: config.displayName,
        version: packageJson.version,
        description: config.description,
        long_description: config.longDescription,