@instructure/ui-react-utils/lib/DeterministicIdContext/DeterministicIdContext.js

A React utility library made by Instructure Inc.

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.defaultDeterministicIDMap = exports.DeterministicIdContext = void 0;
var _react = _interopRequireDefault(require("react"));
/*
 * 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.
 */

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 = exports.defaultDeterministicIDMap = generateInstanceCounterMap();
const DeterministicIdContext = exports.DeterministicIdContext = /*#__PURE__*/_react.default.createContext(defaultDeterministicIDMap);