fix: unambiguously detect web workers (#1728)

Co-authored-by: Thomas Minitsios <thomas@minitsios.com>
mqttjs · Oct 30, 2023 · e44368c · e44368c
1 parent f6123f2
commit e44368c
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/src/lib/is-browser.ts b/src/lib/is-browser.ts
@@ -1,6 +1,11 @@
 const isBrowser =
 	(typeof window !== 'undefined' && typeof window.document !== 'undefined') ||
 	// eslint-disable-next-line no-restricted-globals
-	(typeof self !== 'undefined' && typeof self.postMessage === 'function') || // is web worker
+	(typeof self === 'object' &&
+		// eslint-disable-next-line no-restricted-globals
+		self.constructor &&
+		// eslint-disable-next-line no-restricted-globals
+		self.constructor.name === 'DedicatedWorkerGlobalScope') || // is web worker
 	(typeof navigator !== 'undefined' && navigator.product === 'ReactNative') // while navigator.product is deprecated
+
 export default isBrowser