diff --git a/src/globalthis.js b/src/globalthis.js
new file mode 100644
index 0000000..6e56a77
--- /dev/null
+++ b/src/globalthis.js
@@ -0,0 +1,20 @@
+/* eslint-disable no-undef */
+/* eslint-disable no-extend-native */
+/* eslint-disable strict */
+
+// polyfill for globalThis
+// https://v8.dev/features/globalthis
+// https://mathiasbynens.be/notes/globalthis
+(function () {
+  if (typeof globalThis === 'object') return
+  Object.defineProperty(Object.prototype, '__magic__', {
+    get: function () {
+      return this
+    },
+    configurable: true
+  })
+  __magic__.globalThis = __magic__
+  delete Object.prototype.__magic__
+}())
+
+module.exports = globalThis