custom-app/dhcc-app-dll/node_modules/draft-js/lib/generateRandomKey.js.flow

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/**
 * Copyright (c) 2013-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.
 *
 * @providesModule generateRandomKey
 * @format
 * @flow
 */

'use strict';

const seenKeys = {};
const MULTIPLIER = Math.pow(2, 24);

function generateRandomKey(): string {
  let key;
  while (key === undefined || seenKeys.hasOwnProperty(key) || !isNaN(+key)) {
    key = Math.floor(Math.random() * MULTIPLIER).toString(32);
  }
  seenKeys[key] = true;
  return key;
}

module.exports = generateRandomKey;