From 58d2aa58d5f9c4db49f57a5f33952b3106778669 Mon Sep 17 00:00:00 2001
From: isaacs <i@izs.me>
Date: Mon, 12 Mar 2018 14:31:37 -0700
Subject: [PATCH] pack: use a specific mtime when packing (#20027)

> Thank god I found you.  Listen, can you meet me at Twin Pines Mall
> tonight at 1:15?  I've made a major breakthrough, I'll need your
> assistance.

Fixes: #19933
Fixes: #19968
PR-URL: https://github.com/npm/npm/pull/20027
Credit: @isaacs
Reviewed-By: @zkat
---
 lib/pack.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/pack.js b/lib/pack.js
index 568345392c4..b6a08d86506 100644
--- a/lib/pack.js
+++ b/lib/pack.js
@@ -120,7 +120,9 @@ function packDirectory (mani, dir, target) {
         cwd: dir,
         prefix: 'package/',
         portable: true,
-        noMtime: true,
+        // Provide a specific date in the 1980s for the benefit of zip,
+        // which is confounded by files dated at the Unix epoch 0.
+        mtime: new Date('1985-10-26T08:15:00.000Z'),
         gzip: true
       }