clearConsole.js

/**
 * Copyright (c) 2015-present, 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.
 */

var isFirstClear = true;
function clearConsole() {
  // On first run, clear completely so it doesn't show half screen on Windows.
  // On next runs, use a different sequence that properly scrolls back.
  process.stdout.write(isFirstClear ? '\x1bc' : '\x1b[2J\x1b[0f');
  isFirstClear = false;
}

module.exports = clearConsole;