/** Used to determine if values are of the language type `Object`. */
var objectTypes = {
  'function': true,
  'object': true
};

/**
 * Used as a reference to the global object.
 *
 * The `this` value is used if it is the global object to avoid Greasemonkey's
 * restricted `window` object, otherwise the `window` object is used.
 */
var root = (objectTypes[typeof window] && window !== (this && this.window)) ? window : this;

/** Detect free variable `exports`. */
var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;

/** Detect free variable `global` from Node.js or Browserified code and use it as `root`. */
var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
if (freeGlobal && (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal || freeGlobal.self === freeGlobal)) {
  root = freeGlobal;
}

export default root;