From 7b67eea4448a9b4e102f92ddf36d13ce03ea33b6 Mon Sep 17 00:00:00 2001
From: Gareth Jones <jones258@gmail.com>
Date: Sun, 7 Jul 2019 08:58:17 +1200
Subject: [PATCH] =?UTF-8?q?fix:=20=F0=9F=90=9B=20refactor=20`#writeSync`?=
 =?UTF-8?q?=20to=20be=20compatible=20w/=20`strictNullChecks`?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/volume.ts | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/volume.ts b/src/volume.ts
index b14c294b..e51b668b 100644
--- a/src/volume.ts
+++ b/src/volume.ts
@@ -1103,14 +1103,14 @@ export class Volume {
   writeSync(fd: number, a: string | Buffer | Uint8Array, b?: number, c?: number | TEncoding, d?: number): number {
     validateFd(fd);
 
-    let encoding: TEncoding;
-    let offset: number;
-    let length: number;
-    let position: number;
+    let encoding: TEncoding | undefined;
+    let offset: number | undefined;
+    let length: number | undefined;
+    let position: number | undefined;
 
     const isBuffer = typeof a !== 'string';
     if (isBuffer) {
-      offset = b | 0;
+      offset = (b || 0) | 0;
       length = c as number;
       position = d;
     } else {