feat: add full month and year formatter

Author: Patricio Albizu

projects/common/src/utilities/formatters/date/date-formatter.test.ts

@@ -14,4 +14,12 @@ describe('Date formatter', () => {
       }).format(dateString)
     ).toEqual('Aug 21');
   });
+
+  test('can format a date string with full month and year only', () => {
+    expect(
+      new DateFormatter({
+        mode: DateFormatMode.FullMonthAndYearOnly
+      }).format(dateString)
+    ).toEqual('August 2021');
+  });
 });

projects/common/src/utilities/formatters/date/date-formatter.ts

@@ -8,6 +8,7 @@ export const enum DateFormatMode {
   DateOnly,
   MonthAndDayOnly,
   MonthAndYearOnly,
+  FullMonthAndYearOnly,
   DateAndTime,
   DateAndTimeWithSeconds
 }
@@ -54,6 +55,8 @@ export class DateFormatter {
         return 'MMM d';
       case DateFormatMode.MonthAndYearOnly:
         return 'MMM yy';
+      case DateFormatMode.FullMonthAndYearOnly:
+        return 'MMMM yyyy';
       case DateFormatMode.DateOnly:
         return 'd MMM y';
       case DateFormatMode.DateAndTime: