diff --git a/lib/globalThis.browser.ts b/lib/globalThis.browser.ts
index ea8c4c431..0962057d1 100644
--- a/lib/globalThis.browser.ts
+++ b/lib/globalThis.browser.ts
@@ -1,4 +1,4 @@
-export default (() => {
+export const globalThisShim = (() => {
   if (typeof self !== "undefined") {
     return self;
   } else if (typeof window !== "undefined") {
diff --git a/lib/globalThis.ts b/lib/globalThis.ts
index 1b8c4b29a..27a616bd4 100644
--- a/lib/globalThis.ts
+++ b/lib/globalThis.ts
@@ -1 +1 @@
-export default global;
+export const globalThisShim = global;
diff --git a/lib/transports/polling.ts b/lib/transports/polling.ts
index 78f5e28ce..93e4ace4f 100644
--- a/lib/transports/polling.ts
+++ b/lib/transports/polling.ts
@@ -7,7 +7,7 @@ import XMLHttpRequest from "./xmlhttprequest.js";
 import { Emitter } from "@socket.io/component-emitter";
 import { SocketOptions } from "../socket.js";
 import { installTimerFunctions, pick } from "../util.js";
-import globalThis from "../globalThis.js";
+import { globalThisShim as globalThis } from "../globalThis.js";
 
 const debug = debugModule("engine.io-client:polling"); // debug()
 
diff --git a/lib/transports/websocket-constructor.browser.ts b/lib/transports/websocket-constructor.browser.ts
index 023d953d8..f103edf9b 100644
--- a/lib/transports/websocket-constructor.browser.ts
+++ b/lib/transports/websocket-constructor.browser.ts
@@ -1,4 +1,4 @@
-import globalThis from "../globalThis.js";
+import { globalThisShim as globalThis } from "../globalThis.js";
 
 export const nextTick = (() => {
   const isPromiseAvailable =
diff --git a/lib/transports/xmlhttprequest.browser.ts b/lib/transports/xmlhttprequest.browser.ts
index ec71b40ad..db6846b2c 100644
--- a/lib/transports/xmlhttprequest.browser.ts
+++ b/lib/transports/xmlhttprequest.browser.ts
@@ -1,7 +1,7 @@
 // browser shim for xmlhttprequest module
 
 import { hasCORS } from "../contrib/has-cors.js";
-import globalThis from "../globalThis.js";
+import { globalThisShim as globalThis } from "../globalThis.js";
 
 export default function(opts) {
   const xdomain = opts.xdomain;
diff --git a/lib/util.ts b/lib/util.ts
index 4e40d4e36..48e927eeb 100644
--- a/lib/util.ts
+++ b/lib/util.ts
@@ -1,4 +1,4 @@
-import globalThis from "./globalThis.js";
+import { globalThisShim as globalThis } from "./globalThis.js";
 
 export function pick(obj, ...attr) {
   return attr.reduce((acc, k) => {
diff --git a/lib/xmlhttprequest.ts b/lib/xmlhttprequest.ts
index 660d4135b..b1e803d41 100644
--- a/lib/xmlhttprequest.ts
+++ b/lib/xmlhttprequest.ts
@@ -1,7 +1,7 @@
 // browser shim for xmlhttprequest module
 
 import { hasCORS } from "./contrib/has-cors.js";
-import globalThis from "./globalThis.js";
+import { globalThisShim as globalThis } from "./globalThis.js";
 
 export default function(opts) {
   const xdomain = opts.xdomain;