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@amboras-dev/tz

v0.1.1

Published

Store reporting timezone core for Amboras: supported IANA zones (modern names), old-name aliases, country default zones and DST-safe local-day boundaries. Zero dependencies.

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Links

Git

Maintainers

amboras-vaibhavamboras-vaibhavazaanatamborasazaanatamborassyazahsyazahrasamborasrasamboras

Keywords

Readme

@amboras-dev/tz

Store reporting timezone core, shared by the Amboras orchestrator (backend + admin) and Medusa. Zero dependencies; CommonJS + ESM + types; Node >= 20 and browsers.

import { resolveZone, canonicalZone, pickStoreZone, localDayBoundsUtc, zoneOptions } from '@amboras-dev/tz'

canonicalZone('Asia/Calcutta')              // 'Asia/Kolkata'
resolveZone('Mars/Phobos')                  // 'UTC'
pickStoreZone(undefined, 'US')              // { zone: 'America/New_York', source: 'country_primary' }
localDayBoundsUtc('2026-08-13', 'Asia/Kolkata') // { start: 2026-08-12T18:30Z, end: 2026-08-13T18:30Z }
  • Modern names only. Browsers and Node still report old spellings (Asia/Calcutta, Europe/Kiev); every input goes through canonicalZone.
  • Fixed list, not the runtime's: ZONE_LIST (418 zones incl. UTC), ZONE_ALIASES, COUNTRY_DEFAULT_ZONE, all generated from IANA tzdata by scripts/gen-tzdata.mjs (version in TZDATA_VERSION). CI fails if they drift; a weekly job opens a PR when IANA releases a new version.
  • Decisions live in the generator: the default zone for each multi-zone country (MULTI_ZONE), zones offered as aliases because older runtimes don't know them yet (ALIAS_INSTEAD), and pinned legacy names (EXTRA_ALIASES).