From 035299d052ffd13fe58db7b457deeb71f8acab95 Mon Sep 17 00:00:00 2001
From: Anders Kaseorg <anders@zulip.com>
Date: Thu, 11 Mar 2021 13:31:30 -0800
Subject: [PATCH] webpack: Prevent Emacs file locks from crashing
 webpack-dev-server.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
---
 webpack.config.ts | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/webpack.config.ts b/webpack.config.ts
index 2dd2c7d5f3..230bfabd8a 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -273,6 +273,13 @@ export default (_env: unknown, argv: {mode?: string}): webpack.Configuration[] =
             stats: "errors-only",
             noInfo: true,
         },
+        watchOptions: {
+            ignored: [
+                // Prevent Emacs file locks from crashing webpack-dev-server
+                // https://github.com/webpack/webpack-dev-server/issues/2821
+                "**/.#*",
+            ],
+        },
     };
 
     const serverConfig: webpack.Configuration = {