From 37140f7fd51b1b1f0575bf645244c1b63b8f6643 Mon Sep 17 00:00:00 2001
From: Adi Dahiya <adi.dahiya14@gmail.com>
Date: Mon, 27 Sep 2021 12:11:43 -0400
Subject: [PATCH] [core] fix(classes.ts): compatibility with non-Node
 environments (#4934)

---
 packages/core/src/common/classes.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/core/src/common/classes.ts b/packages/core/src/common/classes.ts
index 538bbdb4ee..f294601f33 100644
--- a/packages/core/src/common/classes.ts
+++ b/packages/core/src/common/classes.ts
@@ -19,7 +19,10 @@ import { Elevation } from "./elevation";
 import { Intent } from "./intent";
 import { Position } from "./position";
 
-const NS = process.env.BLUEPRINT_NAMESPACE || process.env.REACT_APP_BLUEPRINT_NAMESPACE || "bp3";
+let NS = "bp3";
+if (typeof process !== "undefined") {
+    NS = process.env?.BLUEPRINT_NAMESPACE ?? process.env?.REACT_APP_BLUEPRINT_NAMESPACE ?? NS;
+}
 
 // modifiers
 export const ACTIVE = `${NS}-active`;