@instructure/ui-react-utils
Version:
A React utility library made by Instructure Inc.
43 lines (42 loc) • 1.98 kB
JavaScript
/*
* The MIT License (MIT)
*
* Copyright (c) 2015 - present Instructure, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
import React from 'react';
const instUIInstanceCounter = '__INSTUI_GLOBAL_INSTANCE_COUNTER__';
/**
* Returns a global (window-level) instance counter map.
* This needs to be global so that IDs are unique across application instances,
* e.g. in module federation applications are loaded as a .js blob, this method
* makes sure that there are no duplicate IDs across instances.
*/
function generateInstanceCounterMap() {
if (globalThis[instUIInstanceCounter]) {
return globalThis[instUIInstanceCounter];
}
const map = new Map();
globalThis[instUIInstanceCounter] = map;
return map;
}
const defaultDeterministicIDMap = generateInstanceCounterMap();
const DeterministicIdContext = /*#__PURE__*/React.createContext(defaultDeterministicIDMap);
export { DeterministicIdContext, defaultDeterministicIDMap };