From 86d8fe127ff62d4b7deec64e264bde6e0a66503c Mon Sep 17 00:00:00 2001
From: achingbrain <alex@achingbrain.net>
Date: Mon, 23 Dec 2019 16:01:15 +0000
Subject: [PATCH 1/3] fix: format mtime as timespec

---
 src/files/format-mtime.js       | 11 ++++++++---
 test/files/format-mtime.spec.js |  6 +++++-
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/src/files/format-mtime.js b/src/files/format-mtime.js
index 5ce121e..bf6bc67 100644
--- a/src/files/format-mtime.js
+++ b/src/files/format-mtime.js
@@ -1,11 +1,16 @@
 'use strict'
 
 function formatMtime (mtime) {
-  if (mtime === undefined) {
-    return '-'
+  if (mtime == null) {
+    mtime = {
+      secs: 0,
+      nsecs: 0
+    }
   }
 
-  return new Date(mtime * 1000).toLocaleDateString(Intl.DateTimeFormat().resolvedOptions().locale, {
+  const date = new Date((mtime.secs * 1000) + Math.round(mtime.nsecs / 1000))
+
+  return date.toLocaleDateString(Intl.DateTimeFormat().resolvedOptions().locale, {
     year: 'numeric',
     month: 'short',
     day: 'numeric',
diff --git a/test/files/format-mtime.spec.js b/test/files/format-mtime.spec.js
index d7a6eae..c060e6e 100644
--- a/test/files/format-mtime.spec.js
+++ b/test/files/format-mtime.spec.js
@@ -10,6 +10,10 @@ const expect = chai.expect
 
 describe('format-mtime', function () {
   it('formats mtime', function () {
-    expect((new Date(formatMtime(0))).getTime()).to.equal(0)
+    expect(formatMtime({ secs: 100, nsecs: 0 })).to.equal('Jan 1, 1970, 1:01:40 AM GMT+1')
+  })
+
+  it('formats empty mtime', function () {
+    expect(formatMtime()).to.equal('Jan 1, 1970, 1:00:00 AM GMT+1')
   })
 })

From 89002f3ad0f4026d2f9aa5c80c0e4758a2c0f3b3 Mon Sep 17 00:00:00 2001
From: achingbrain <alex@achingbrain.net>
Date: Mon, 23 Dec 2019 16:11:30 +0000
Subject: [PATCH 2/3] fix: do not depend on test host timezone

---
 test/files/format-mtime.spec.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/test/files/format-mtime.spec.js b/test/files/format-mtime.spec.js
index c060e6e..146fc0d 100644
--- a/test/files/format-mtime.spec.js
+++ b/test/files/format-mtime.spec.js
@@ -10,10 +10,10 @@ const expect = chai.expect
 
 describe('format-mtime', function () {
   it('formats mtime', function () {
-    expect(formatMtime({ secs: 100, nsecs: 0 })).to.equal('Jan 1, 1970, 1:01:40 AM GMT+1')
+    expect(formatMtime({ secs: 100, nsecs: 0 })).to.include('Jan 1, 1970')
   })
 
   it('formats empty mtime', function () {
-    expect(formatMtime()).to.equal('Jan 1, 1970, 1:00:00 AM GMT+1')
+    expect(formatMtime()).to.include('Jan 1, 1970')
   })
 })

From 239a103d0228b9229171337fa92d6d29520a06b1 Mon Sep 17 00:00:00 2001
From: achingbrain <alex@achingbrain.net>
Date: Wed, 8 Jan 2020 15:41:52 +0000
Subject: [PATCH 3/3] fix: support empty mtimes

---
 src/files/format-mtime.js       | 5 +----
 test/files/format-mtime.spec.js | 2 +-
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/files/format-mtime.js b/src/files/format-mtime.js
index bf6bc67..486cecb 100644
--- a/src/files/format-mtime.js
+++ b/src/files/format-mtime.js
@@ -2,10 +2,7 @@
 
 function formatMtime (mtime) {
   if (mtime == null) {
-    mtime = {
-      secs: 0,
-      nsecs: 0
-    }
+    return '-'
   }
 
   const date = new Date((mtime.secs * 1000) + Math.round(mtime.nsecs / 1000))
diff --git a/test/files/format-mtime.spec.js b/test/files/format-mtime.spec.js
index 146fc0d..80c44ad 100644
--- a/test/files/format-mtime.spec.js
+++ b/test/files/format-mtime.spec.js
@@ -14,6 +14,6 @@ describe('format-mtime', function () {
   })
 
   it('formats empty mtime', function () {
-    expect(formatMtime()).to.include('Jan 1, 1970')
+    expect(formatMtime()).to.equal('-')
   })
 })