From 32d1bdfee59f39a9a7fca84c9b9a84a3ed9a0876 Mon Sep 17 00:00:00 2001
From: Haoqun Jiang <haoqunjiang@gmail.com>
Date: Thu, 12 Mar 2020 18:09:06 +0800
Subject: [PATCH] fix: also check for "EISDIR" in `mkdirp`

Fixes #10544.

Though the `EISDIR` error code is not mentioned in the POSIX standard,
FreeBSD and memfs both throws this error when trying to run `mkdir` on
`/`. So essentially we should treat it the same as `EEXIST`.

References:
* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=59739
* https://github.com/streamich/memfs/pull/326/
---
 lib/util/fs.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/util/fs.js b/lib/util/fs.js
index e122d566e7e..72831311134 100644
--- a/lib/util/fs.js
+++ b/lib/util/fs.js
@@ -141,7 +141,7 @@ const mkdirp = (fs, p, callback) => {
 					});
 				});
 				return;
-			} else if (err.code === "EEXIST") {
+			} else if (err.code === "EEXIST" || err.code === "EISDIR") {
 				callback();
 				return;
 			}