code: function crc32(str: string): number {
    /* jslint bitwise: true */
    var crc = -1;
    for (var i = 0, len = str.length; i < len; i++) {
      crc = (crc >>> 8) ^ table[(crc ^ str.charCodeAt(i)) & 0xFF];
    }
    return ~crc;
  }
docs: Copyright (c) 2013-present, Facebook, Inc.
  
  This source code is licensed under the MIT license found in the
  LICENSE file in the root directory of this source tree.
  
  @providesModule crc32
  @flow