react-native-community-cli/scripts/helpers.js

/**
 * Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

const fs = require('fs');
const path = require('path');
const chalk = require('chalk');
const stringLength = require('string-length');

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

const OK = chalk.reset.inverse.bold.green(' DONE ');

function getPackages() {
  return fs
    .readdirSync(PACKAGES_DIR)
    .map(file => path.resolve(PACKAGES_DIR, file))
    .filter(f => fs.lstatSync(path.resolve(f)).isDirectory());
}

function adjustToTerminalWidth(str) {
  const columns = process.stdout.columns || 80;
  const WIDTH = columns - stringLength(OK) + 1;
  const strs = str.match(new RegExp(`(.{1,${WIDTH}})`, 'g'));
  let lastString = strs[strs.length - 1];
  if (lastString.length < WIDTH) {
    lastString += Array(WIDTH - lastString.length).join(chalk.dim('.'));
  }
  return strs
    .slice(0, -1)
    .concat(lastString)
    .join('\n');
}

module.exports = {
  getPackages,
  PACKAGES_DIR,
  adjustToTerminalWidth,
  OK,
};