Use window as global by default, fall back to eval

Author: moritzuehling

src/builtIns/index.js

@@ -1,7 +1,7 @@
 import collectionHandlers from './collections'
 
 // eslint-disable-next-line
-const globalObj = Function("return this")();
+const globalObj = typeof window === 'object' ? window : Function('return this')();
 
 // built-in object can not be wrapped by Proxies
 // their methods expect the object instance as the 'this' instead of the Proxy wrapper