From a68f8b18cdd0de2c4c491bd39df6f821029ddded Mon Sep 17 00:00:00 2001
From: Alex Potsides <alex@achingbrain.net>
Date: Wed, 8 Jan 2020 19:30:03 +0000
Subject: [PATCH] fix: format mtime as timespec (#20)

---
 src/files/format-mtime.js       | 6 ++++--
 test/files/format-mtime.spec.js | 6 +++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/files/format-mtime.js b/src/files/format-mtime.js
index 5ce121e..486cecb 100644
--- a/src/files/format-mtime.js
+++ b/src/files/format-mtime.js
@@ -1,11 +1,13 @@
 'use strict'
 
 function formatMtime (mtime) {
-  if (mtime === undefined) {
+  if (mtime == null) {
     return '-'
   }
 
-  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..80c44ad 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.include('Jan 1, 1970')
+  })
+
+  it('formats empty mtime', function () {
+    expect(formatMtime()).to.equal('-')
   })
 })