@vahidamirian/datepicker-core

Framework-agnostic headless core for the NDP date picker. Pure TypeScript with zero framework dependencies — the shared foundation under @vahidamirian/ngx-jalali-datepicker and @vahidamirian/vue-datepicker.

It ships:

• Calendar adapters — GregorianCalendarAdapter, JalaliCalendarAdapter, HijriCalendarAdapter, and the CalendarAdapter abstract base you implement to add your own calendar.
• Conversion math — JalaaliMath, HijriMath (dependency-free, verified against the platform Intl calendars).
• Render-ready view builders — buildMonthView, buildMonthsView, buildYearsView: every per-cell flag (selected / in-range / disabled / today …) precomputed once so any UI layer only reads booleans.
• Pure logic — applySelection, isSelectionComplete, rangeEquals, time-of-day helpers (getTimeOfDay, withTimeOfDay, snapMinutes, stepMinutes), and the dayKey / digit utilities.

import { JalaliCalendarAdapter, buildMonthView, applySelection } from '@vahidamirian/datepicker-core';

const cal = new JalaliCalendarAdapter();
cal.parse('۱۴۰۴/۰۳/۲۸'); // Date | null

Build a completely custom UI on top of this, or use a framework package. See the repo README for the full API.

License

MIT © Vahid Amirian