From e931778b9340f39560a45e47a1052826476f4941 Mon Sep 17 00:00:00 2001
From: Gareth Jones <jones258@gmail.com>
Date: Sun, 7 Jul 2019 09:59:51 +1200
Subject: [PATCH] =?UTF-8?q?fix:=20=F0=9F=90=9B=20refactor=20`#writeFileBas?=
 =?UTF-8?q?e`=20to=20be=20compatible=20w/=20`strictNullChecks`?=
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---
 src/volume.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/volume.ts b/src/volume.ts
index 11ea97a7..ed7be35c 100644
--- a/src/volume.ts
+++ b/src/volume.ts
@@ -1230,13 +1230,13 @@ export class Volume {
 
     let offset = 0;
     let length = buf.length;
-    let position = flagsNum & O_APPEND ? null : 0;
+    let position = flagsNum & O_APPEND ? undefined : 0;
     try {
       while (length > 0) {
         const written = this.writeSync(fd, buf, offset, length, position);
         offset += written;
         length -= written;
-        if (position !== null) position += written;
+        if (position !== undefined) position += written;
       }
     } finally {
       if (!isUserFd) this.closeSync(fd);