diff --git a/src/core/env.ts b/src/core/env.ts
index cadec6688..a9c7b1926 100644
--- a/src/core/env.ts
+++ b/src/core/env.ts
@@ -38,8 +38,9 @@ else if (typeof document === 'undefined' && typeof self !== 'undefined') {
     env.worker = true;
 }
 else if (
-    typeof navigator === 'undefined'
-    || navigator.userAgent.indexOf('Node.js') === 0
+    (typeof process !== 'undefined' && typeof process.version === 'string')
+    || (typeof navigator === 'undefined' || typeof navigator.userAgent === 'undefined')
+    || (env.hasGlobalWindow && 'Deno' in window)
 ) {
     // In node
     env.node = true;