From eb8e2643b6619c49f3a97d6c5d170dc3b15937ea Mon Sep 17 00:00:00 2001
From: Christoph Tavan <dev@tavan.de>
Date: Fri, 25 Oct 2019 16:52:15 +0200
Subject: [PATCH] Disable parallel build for firebase authentication example

---
 examples/with-firebase-authentication/next.config.js | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 examples/with-firebase-authentication/next.config.js

diff --git a/examples/with-firebase-authentication/next.config.js b/examples/with-firebase-authentication/next.config.js
new file mode 100644
index 0000000000000..ff566d92fe871
--- /dev/null
+++ b/examples/with-firebase-authentication/next.config.js
@@ -0,0 +1,9 @@
+// Parallel builds are currently broken due to a limitation in grpc (a transitive firebase
+// dependency). Until this is fixed, a workaround is to set the number of available CPUs to 1.
+// https://github.com/zeit/next.js/issues/7894
+// https://github.com/grpc/grpc-node/issues/778
+module.exports = {
+  experimental: {
+    cpus: 1
+  }
+}