From 90db749ee538d110b884d0b3344fafd6155e3436 Mon Sep 17 00:00:00 2001
From: Ben Heidemann <ben@heidemann.co.uk>
Date: Sun, 18 Apr 2021 16:18:45 +0100
Subject: [PATCH] fix: handle case data = 0 in writeFile

---
 src/filesystem/implementation.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/filesystem/implementation.js b/src/filesystem/implementation.js
index 33ed78c..5e839da 100644
--- a/src/filesystem/implementation.js
+++ b/src/filesystem/implementation.js
@@ -1869,7 +1869,6 @@ function writeFile(context, path, data, options, callback) {
     return callback(new Errors.EINVAL('flags is not valid', path));
   }
 
-  data = data || '';
   if(!Buffer.isBuffer(data)) {
     if(typeof data === 'number') {
       data = '' + data;
@@ -1878,7 +1877,7 @@ function writeFile(context, path, data, options, callback) {
       data = Buffer.from(data.toString());
     }
     else {
-      data = Buffer.from(data, options.encoding || 'utf8');
+      data = Buffer.from(data || '', options.encoding || 'utf8');
     }
   }