d2-ui
Version:
28 lines (24 loc) • 713 B
JavaScript
/**
* 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
* @typechecks
*
*/
;
var seenKeys = {};
var MULTIPLIER = Math.pow(2, 24);
function generateRandomKey() {
var key = undefined;
while (key === undefined || seenKeys.hasOwnProperty(key) || !isNaN(+key)) {
key = Math.floor(Math.random() * MULTIPLIER).toString(32);
}
seenKeys[key] = true;
return key;
}
module.exports = generateRandomKey;