Internationalisation of lib directory

This is one of many MRs opened in order to improve the overall
internationalisation of the GitLab codebase.

i18n documentation
https://docs.gitlab.com/ee/development/i18n/externalization.html

app/assets/javascripts/lib/utils/datetime_utility.js

@@ -3,7 +3,7 @@ import _ from 'underscore';
 import timeago from 'timeago.js';
 import dateFormat from 'dateformat';
 import { pluralize } from './text_utility';
-import { languageCode, s__ } from '../../locale';
+import { languageCode, s__, __ } from '../../locale';
 window.timeago = timeago;
@@ -63,7 +63,15 @@ export const pad = (val, len = 2) => `0${val}`.slice(-len);
  * @returns {String}
  */
 export const getDayName = date =>
-  ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'][date.getDay()];
+  [
+    __('Sunday'),
+    __('Monday'),
+    __('Tuesday'),
+    __('Wednesday'),
+    __('Thursday'),
+    __('Friday'),
+    __('Saturday'),
+  ][date.getDay()];
 /**
  * @example
@@ -320,13 +328,13 @@ export const getSundays = date => {
   }
   const daysToSunday = [
-    'Saturday',
-    'Friday',
-    'Thursday',
-    'Wednesday',
-    'Tuesday',
-    'Monday',
-    'Sunday',
+    __('Saturday'),
+    __('Friday'),
+    __('Thursday'),
+    __('Wednesday'),
+    __('Tuesday'),
+    __('Monday'),
+    __('Sunday'),
   ];
   const month = date.getMonth();
@@ -336,7 +344,7 @@ export const getSundays = date => {
   while (dateOfMonth.getMonth() === month) {
     const dayName = getDayName(dateOfMonth);
-    if (dayName === 'Sunday') {
+    if (dayName === __('Sunday')) {
       sundays.push(new Date(dateOfMonth.getTime()));
     }

app/assets/javascripts/lib/utils/number_utils.js

 import { BYTES_IN_KIB } from './constants';
+import { sprintf, __ } from '~/locale';
 /**
  * Function that allows a number with an X amount of decimals
@@ -72,13 +73,13 @@ export function bytesToGiB(number) {
  */
 export function numberToHumanSize(size) {
   if (size < BYTES_IN_KIB) {
-    return `${size} bytes`;
+    return sprintf(__('%{size} bytes'), { size });
   } else if (size < BYTES_IN_KIB * BYTES_IN_KIB) {
-    return `${bytesToKiB(size).toFixed(2)} KiB`;
+    return sprintf(__('%{size} KiB'), { size: bytesToKiB(size).toFixed(2) });
   } else if (size < BYTES_IN_KIB * BYTES_IN_KIB * BYTES_IN_KIB) {
-    return `${bytesToMiB(size).toFixed(2)} MiB`;
+    return sprintf(__('%{size} MiB'), { size: bytesToMiB(size).toFixed(2) });
   }
-  return `${bytesToGiB(size).toFixed(2)} GiB`;
+  return sprintf(__('%{size} GiB'), { size: bytesToGiB(size).toFixed(2) });
 }
 /**

locale/gitlab.pot

@@ -193,6 +193,18 @@ msgstr ""
 msgid "%{service_title} settings saved, but not activated."
 msgstr ""
+msgid "%{size} GiB"
+msgstr ""
+
+msgid "%{size} KiB"
+msgstr ""
+
+msgid "%{size} MiB"
+msgstr ""
+
+msgid "%{size} bytes"
+msgstr ""
+
 msgid "%{spammable_titlecase} was submitted to Akismet successfully."
 msgstr ""
@@ -4482,6 +4494,9 @@ msgstr ""
 msgid "Found errors in your .gitlab-ci.yml:"
 msgstr ""
+msgid "Friday"
+msgstr ""
+
 msgid "From %{providerTitle}"
 msgstr ""
@@ -9984,6 +9999,9 @@ msgstr ""
 msgid "This will remove the fork relationship to source project"
 msgstr ""
+msgid "Thursday"
+msgstr ""
+
 msgid "Time before an issue gets scheduled"
 msgstr ""
@@ -10387,6 +10405,9 @@ msgstr ""
 msgid "Trying to communicate with your device. Plug it in (if you haven't already) and press the button on the device now."
 msgstr ""
+msgid "Tuesday"
+msgstr ""
+
 msgid "Twitter"
 msgstr ""
@@ -10879,6 +10900,9 @@ msgstr ""
 msgid "Webhooks Help"
 msgstr ""
+msgid "Wednesday"
+msgstr ""
+
 msgid "Welcome to your Issue Board!"
 msgstr ""