fix: correctly restore globals in env teardown (#1774)

* fix: correctly restore globals in env teardown

* test: more tests

packages/vitest/src/integrations/env/utils.ts

@@ -4,6 +4,7 @@ const allowRewrite = [
   'Event',
   'EventTarget',
   'MessageEvent',
+  // implemented in Node 18
   'ArrayBuffer',
 ]
 
@@ -41,7 +42,7 @@ export function populateGlobal(global: any, win: any, options: PopulateOptions =
   const keys = getWindowKeys(global, win)
 
   const originals = new Map<string | symbol, any>(
-    allowRewrite.map(([key]) => [key, global[key]]),
+    allowRewrite.filter(key => key in global).map(key => [key, global[key]]),
   )
 
   const overrideObject = new Map<string | symbol, any>()

test/core/test/env-runtime.test.ts

@@ -0,0 +1,15 @@
+import { populateGlobal } from 'vitest/src/integrations/env/utils'
+import { expect, test, vi } from 'vitest'
+
+test('returns valid globals', () => {
+  const globalEvent = vi.fn()
+  const winEvent = vi.fn()
+  const global = {
+    Event: globalEvent,
+  }
+  const win = { Event: winEvent }
+  const { originals } = populateGlobal(global, win)
+  expect(originals.get('Event')).toBe(globalEvent)
+  expect(win.Event).toBe(winEvent)
+  expect(global.Event).toBe(winEvent)
+})