metro/scripts/_getPackages.js

/**
 * Copyright (c) 2014, Facebook, Inc. All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @format
 */

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

const PACKAGES_DIR = path.resolve(__dirname, '../packages');

// Get absolute paths of all directories under packages/*
module.exports = function getPackages() {
  return fs
    .readdirSync(PACKAGES_DIR)
    .map(file => path.resolve(PACKAGES_DIR, file))
    .filter(f => fs.lstatSync(path.resolve(f)).isDirectory());
};