From 015608e6a784beb145ba65185c1eb35343d55e01 Mon Sep 17 00:00:00 2001
From: Troy Ready <troy@troyready.com>
Date: Mon, 5 Apr 2021 13:38:22 -0700
Subject: [PATCH] Fix central directory file header CRC32

Archives are currently being created with an empty CRC value (`00000000`), which causes validation errors on extraction (non-zero exit codes using `unzip` on Debian, and `Lambda was not able to unzip the file` errors on AWS Lambda).

Fixes: #13
---
 index.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index f686240..43ff15a 100644
--- a/index.js
+++ b/index.js
@@ -150,7 +150,7 @@ class Zipfile {
 		} else {
 			const directoryTempl = this.fileCentralDirTempl;
 			const filenameBuffer = fromBuffer(file.relativePath)
-			directoryTempl.writeUIntLE(file.checksum, 16, 4); //crc-32
+			directoryTempl.writeUIntLE(parseInt(file.checksum.toString('hex'), 16), 16, 4); //crc-32
 			directoryTempl.writeInt32LE(file.compressedSize, 20); //compressedSize
 			directoryTempl.writeInt32LE(file.uncompressedSize, 24); //uncompressedSize
 			directoryTempl.writeInt16LE(filenameBuffer.length, 28); //filename length
@@ -202,4 +202,4 @@ const zip = (dir, destination, options, callback) => {
 	})	
 }
 
-module.exports = zip
\ No newline at end of file
+module.exports = zip