refactor: code clean up

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

src/utils/date.ts

@@ -1,4 +1,4 @@
-import type { VisibleDateRange } from '../types'
+import { EpochSpan } from '@/types/date'
 
 export function parseCalendarDate(value: string | null | undefined): Date | null {
   if (!value) return null
@@ -45,17 +45,17 @@ export function shiftLocalMonths(date: Date, months: number): Date {
   return shifted
 }
 
-export function daysVisibleRange(date: Date, days: number): VisibleDateRange {
+export function daysVisibleRange(date: Date, days: number): EpochSpan {
   const start = startOfLocalDay(date)
   const end = shiftLocalDays(start, Math.max(1, days))
 
   return {
-    startMs: start.getTime(),
-    endMs: end.getTime(),
+    start: start.getTime(),
+    end: end.getTime(),
   }
 }
 
-export function monthGridVisibleRange(date: Date): VisibleDateRange {
+export function monthGridVisibleRange(date: Date): EpochSpan {
   const firstDay = new Date(date.getFullYear(), date.getMonth(), 1)
   const gridStart = new Date(firstDay)
   gridStart.setDate(gridStart.getDate() - gridStart.getDay())
@@ -65,7 +65,7 @@ export function monthGridVisibleRange(date: Date): VisibleDateRange {
   const gridEnd = shiftLocalDays(gridStart, weeks * 7)
 
   return {
-    startMs: gridStart.getTime(),
-    endMs: gridEnd.getTime(),
+    start: gridStart.getTime(),
+    end: gridEnd.getTime(),
   }
 }