Update usage of timeago.js

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

 import $ from 'jquery';
 import _ from 'underscore';
-import timeago from 'timeago.js';
+import * as timeago from 'timeago.js';
 import dateFormat from 'dateformat';
 import { languageCode, s__, __, n__ } from '../../locale';
 
@@ -92,14 +92,10 @@ export const formatDate = (datetime, format = 'mmm d, yyyy h:MMtt Z') => {
  */
 const timeagoLanguageCode = languageCode().replace(/-/g, '_');
 
-let timeagoInstance;
-
 /**
- * Sets a timeago Instance
+ * Registers timeago locales
  */
-export const getTimeago = () => {
-  if (!timeagoInstance) {
-    const memoizedLocaleRemaining = () => {
+const memoizedLocaleRemaining = () => {
   const cache = [];
 
   const timeAgoLocaleRemaining = [
@@ -126,9 +122,9 @@ export const getTimeago = () => {
     cache[index] = timeAgoLocaleRemaining[index] && timeAgoLocaleRemaining[index]();
     return cache[index];
   };
-    };
+};
 
-    const memoizedLocale = () => {
+const memoizedLocale = () => {
   const cache = [];
 
   const timeAgoLocale = [
@@ -155,27 +151,20 @@ export const getTimeago = () => {
     cache[index] = timeAgoLocale[index] && timeAgoLocale[index]();
     return cache[index];
   };
-    };
-
-    timeago.register(timeagoLanguageCode, memoizedLocale());
-    timeago.register(`${timeagoLanguageCode}-remaining`, memoizedLocaleRemaining());
-
-    timeagoInstance = timeago();
-  }
-
-  return timeagoInstance;
 };
 
+timeago.register(timeagoLanguageCode, memoizedLocale());
+timeago.register(`${timeagoLanguageCode}-remaining`, memoizedLocaleRemaining());
+
 /**
  * For the given elements, sets a tooltip with a formatted date.
  * @param {JQuery} $timeagoEls
  * @param {Boolean} setTimeago
  */
 export const localTimeAgo = ($timeagoEls, setTimeago = true) => {
-  getTimeago();
 
   $timeagoEls.each((i, el) => {
-    $(el).text(timeagoInstance.format($(el).attr('datetime'), timeagoLanguageCode));
+    $(el).text(timeago.format($(el).attr('datetime'), timeagoLanguageCode));
   });
 
   if (!setTimeago) {
@@ -207,7 +196,7 @@ export const timeFor = (time, expiredLabel) => {
   if (new Date(time) < new Date()) {
     return expiredLabel || s__('Timeago|Past due');
   }
-  return getTimeago()
+  return timeago
     .format(time, `${timeagoLanguageCode}-remaining`)
     .trim();
 };
@@ -417,7 +406,7 @@ export const dayInQuarter = (date, quarter) =>
 window.gl = window.gl || {};
 window.gl.utils = {
   ...(window.gl.utils || {}),
-  getTimeago,
+  timeago,
   localTimeAgo,
 };