Allow plugins from a parent document to be used in an iframe (#12208)

* Fix cross iframe isPlainObject check * Update changelog --------- Co-authored-by: Jordan Pittman <[email protected]>
tailwindlabs · Oct 23, 2023 · 63989b2 · 63989b2
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -27,6 +27,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix sorting of utilities that share multiple candidates ([#12173](https://github.com/tailwindlabs/tailwindcss/pull/12173))
 - Ensure variants with arbitrary values and a modifier are correctly matched in the RegEx based parser ([#12179](https://github.com/tailwindlabs/tailwindcss/pull/12179))
 - Fix crash when watching renamed files on FreeBSD ([#12193](https://github.com/tailwindlabs/tailwindcss/pull/12193))
+- Allow plugins from a parent document to be used in an iframe ([#12208](https://github.com/tailwindlabs/tailwindcss/pull/12208))
 
 ## [3.3.3] - 2023-07-13
 

diff --git a/src/util/isPlainObject.js b/src/util/isPlainObject.js
@@ -4,5 +4,5 @@ export default function isPlainObject(value) {
   }
 
   const prototype = Object.getPrototypeOf(value)
-  return prototype === null || prototype === Object.prototype
+  return prototype === null || Object.getPrototypeOf(prototype) === null
 }