diff --git a/packages/socket/src/packet/acceptor.js b/packages/socket/src/packet/acceptor.js
index cb85ac2..40eec23 100644
--- a/packages/socket/src/packet/acceptor.js
+++ b/packages/socket/src/packet/acceptor.js
@@ -14,11 +14,15 @@ export default (socket) => async (packet, fn) => {
       return;
     }
     debug('acceptor error: %O', error);
+    const isProduction = 'client' === process.env.SIDE
+      ? process.env.NODE_ENV
+      // eslint-disable-next-line no-eval
+      : eval('process.env.NODE_ENV');
     if (error instanceof Error) {
       fn({
         code: error.code || 500,
-        reason: 'production' === process.env.NODE_ENV ? 'error' : error.message,
-        ...('production' === process.env.NODE_ENV ? {} : {stack: error.stack}),
+        reason: 'production' === isProduction ? 'error' : error.message,
+        ...('production' === isProduction ? {} : {stack: error.stack}),
       });
       return;
     }