/** Internal global with common properties and Sentry extensions  */

// The code below for 'isGlobalObj' and 'GLOBAL_OBJ' was copied from core-js before modification
// https://github.com/zloirock/core-js/blob/1b944df55282cdc99c90db5f49eb0b6eda2cc0a3/packages/core-js/internals/global.js
// core-js has the following licence:
//
// Copyright (c) 2014-2022 Denis Pushkarev
//
// 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.

/** Returns 'obj' if it's the global object, otherwise returns undefined */
function isGlobalObj(obj) {
  return obj && obj.Math == Math ? obj : undefined;
}

/** Get's the global object for the current JavaScript runtime */
const GLOBAL_OBJ =
  (typeof globalThis == 'object' && isGlobalObj(globalThis)) ||
  // eslint-disable-next-line no-restricted-globals
  (typeof window == 'object' && isGlobalObj(window)) ||
  (typeof self == 'object' && isGlobalObj(self)) ||
  (typeof global == 'object' && isGlobalObj(global)) ||
  (function () {
    return this;
  })() ||
  {};

/**
 * @deprecated Use GLOBAL_OBJ instead or WINDOW from @sentry/browser. This will be removed in v8
 */
function getGlobalObject() {
  return GLOBAL_OBJ ;
}

/**
 * Returns a global singleton contained in the global `__SENTRY__` object.
 *
 * If the singleton doesn't already exist in `__SENTRY__`, it will be created using the given factory
 * function and added to the `__SENTRY__` object.
 *
 * @param name name of the global singleton on __SENTRY__
 * @param creator creator Factory function to create the singleton if it doesn't already exist on `__SENTRY__`
 * @param obj (Optional) The global object on which to look for `__SENTRY__`, if not `GLOBAL_OBJ`'s return value
 * @returns the singleton
 */
function getGlobalSingleton(name, creator, obj) {
  const gbl = (obj || GLOBAL_OBJ) ;
  const __SENTRY__ = (gbl.__SENTRY__ = gbl.__SENTRY__ || {});
  const singleton = __SENTRY__[name] || (__SENTRY__[name] = creator());
  return singleton;
}

export { GLOBAL_OBJ, getGlobalObject, getGlobalSingleton };
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