fix: update daysDiff function

putdotio · Oct 25, 2023 · a1b2a2c · a1b2a2c
1 parent 5434769
commit a1b2a2c
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Showing 2 changed files with 9 additions and 4 deletions.
diff --git a/src/date/date.spec.ts b/src/date/date.spec.ts
@@ -24,8 +24,13 @@ describe('date', () => {
   });
 
   describe('daysDiff', () => {
+    beforeAll(() => {
+      jest.useFakeTimers().setSystemTime(new Date('2020-02-05'));
+    });
+
     it('calculates the difference between two dates, in calendar days', () => {
-      expect(daysDiff('2023-06-03T18:30:03Z')).toBe(1);
+      expect(daysDiff('2020-02-05T16:13:28')).toBe(0);
+      expect(daysDiff('2020-02-04T06:51:43')).toBe(1);
     });
   });
 });
diff --git a/src/date/date.ts b/src/date/date.ts
@@ -27,9 +27,9 @@ export const daysDiff = (
   date1: UTCTimestamp,
   date2: UTCTimestamp = new Date().toISOString()
 ) => {
-  return Math.ceil(
-    Math.abs(dayjs(ensureUTC(date1)).diff(ensureUTC(date2), 'day', true))
-  );
+  const day1 = dayjs(ensureUTC(date1)).startOf('day');
+  const day2 = dayjs(ensureUTC(date2)).startOf('day');
+  return day2.diff(day1, 'day');
 };
 
 export const getUnixTimestamp = (date: UTCTimestamp) => {