@segment/analytics-core/src/utils/get-global.ts

This package represents core 'shared' functionality that is shared by analytics packages. This is not designed to be used directly, but internal to analytics-node and analytics-browser.

/* eslint-disable no-restricted-globals */
// This an imperfect polyfill for globalThis
export const getGlobal = () => {
  if (typeof globalThis !== 'undefined') {
    return globalThis
  }
  if (typeof self !== 'undefined') {
    return self
  }
  if (typeof window !== 'undefined') {
    return window
  }
  if (typeof global !== 'undefined') {
    return global
  }
  return null
}