switching to use intl v3

.eslintrc.json

@@ -1,7 +1,6 @@
 {
   "extends": "brightspace/polymer-3-config",
   "globals": {
-    "d2lIntl": true,
     "fastdom": false
   }
 }

d2l-date-picker-behavior.js

@@ -1,7 +1,7 @@
 import '@polymer/polymer/polymer-legacy.js';
 import 'fastdom/fastdom.js';
 import './localize-behavior.js';
-import d2lIntl from 'd2l-intl';
+import {getDateTimeDescriptor} from '@brightspace-ui/intl/lib/dateTime.js';
 import { useShadow } from '@polymer/polymer/lib/utils/settings.js';
 window.D2L = window.D2L || {};
 window.D2L.PolymerBehaviors = window.D2L.PolymerBehaviors || {};
@@ -128,14 +128,15 @@ D2L.PolymerBehaviors.DatePicker.DatePickerBehaviorImpl = {
 	},
 
 	_updateDatePickeri18n: function() {
-		var locale = d2lIntl.LocaleProvider(this.locale);
+
+		var descriptor = getDateTimeDescriptor();
 
 		var datePicker = this.$$('vaadin-date-picker-light');
 		var localeOverrides = {
-			monthNames: locale.date.calendar.months.long,
-			weekdays: locale.date.calendar.days.long,
-			weekdaysShort: locale.date.calendar.days.short,
-			firstDayOfWeek: this.firstDayOfWeek ? this.firstDayOfWeek : locale.date.calendar.firstDayOfWeek,
+			monthNames: descriptor.calendar.months.long,
+			weekdays: descriptor.calendar.days.long,
+			weekdaysShort: descriptor.calendar.days.short,
+			firstDayOfWeek: this.firstDayOfWeek ? this.firstDayOfWeek : descriptor.calendar.firstDayOfWeek,
 			today: this.localize('today'),
 			cancel: this.localize('cancel'),
 			formatDate: function(date) {

package.json

@@ -42,6 +42,7 @@
   },
   "version": "2.3.2",
   "dependencies": {
+    "@brightspace-ui/intl": "Brightspace/intl#v3",
     "@polymer/iron-a11y-keys": "^3.0.1",
     "@polymer/iron-dropdown": "^3.0.1",
     "@polymer/iron-input": "^3.0.1",