33 lines
854 B
TypeScript
33 lines
854 B
TypeScript
 
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const FALLBACK_TZ = "Asia/Tehran";
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const TZ_ALIASES: Record<string, string> = {
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"Asia/Esfahan": FALLBACK_TZ,
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"Asia/Isfahan": FALLBACK_TZ,
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"Asia/Mashhad": FALLBACK_TZ,
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"Asia/Shiraz": FALLBACK_TZ,
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"Asia/Tabriz": FALLBACK_TZ,
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Iran: FALLBACK_TZ,
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};
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export function resolveTimezone(input?: string | null): string {
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const raw = (input || FALLBACK_TZ).trim() || FALLBACK_TZ;
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const candidate = TZ_ALIASES[raw] || raw;
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try {
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Intl.DateTimeFormat("en-US", { timeZone: candidate });
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return candidate;
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} catch {
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return FALLBACK_TZ;
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}
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}
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export function formatClock(date: Date, timezone?: string | null, locale = "fa-IR") {
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const tz = resolveTimezone(timezone);
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return new Intl.DateTimeFormat(locale, {
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timeZone: tz,
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hour: "2-digit",
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minute: "2-digit",
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second: "2-digit",
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hour12: false,
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}).format(date);
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}
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