Always overwrite globals but don't overwrite node globals

9 years ago · 9ca08b2bdd
1 changed files with 9 additions and 2 deletions
--- a/src/index.js
+++ b/src/index.js
@ -1,13 +1,20 @@
 import { jsdom } from 'jsdom';

+const protectedproperties = (() => {
+  const window = jsdom('<html><body></body></html>').defaultView;
+
+  return Object
+    .keys(window)
+    .filter(prop => global[prop]);
+})();
+
 module.exports = arg => {
  const properties = arg instanceof Array ? arg : arg && arg.properties;
-  const overwrite = arg && arg.overwrite;
  const window = jsdom('<html><body></body></html>').defaultView;

  Object
    .keys(window)
-    .filter(prop => typeof global[prop] === 'undefined' || properties && overwrite)
+    .filter(prop => protectedproperties.indexOf(prop) === -1)
    .filter(prop => !(properties && properties.indexOf(prop) === -1))
    .forEach(prop => global[prop] = window[prop]);