This is a reliable cross environment global object reference polyfill which allows access to the global object of any JS environment using the identifier called theGlobalScopeObject.

globalObjectPolyfill.js

const theGlobalScopeObject =
  (typeof globalThis != "undefined") ? globalThis :
  (typeof global != "undefined") ? global :
  (typeof window != "undefined") ? window :
  (typeof self != "undefined") ? self :
  (new Function("return this"))();

// globalThis is a standardized object as of ES2020 which can be used to access the global scope.

// To find the reference of the global of any environment, the following script can be used:

var globalObject = (new Function("return this"))();