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[READ-ONLY] Mirror of https://github.com/openstatusHQ/openstatus. 🫖 Status page with uptime monitoring & API monitoring as code 🫖 openstatus.dev
bun drizzle-orm monitoring monitoring-as-code nextjs observability on-call open-source shadcn-ui status-page statuspage synthetic-monitoring tinybird turso uptime uptime-checker uptime-monitor
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3.2 kB · 108 lines
TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109import { format, getTimezoneOffset, utcToZonedTime } from "date-fns-tz";import { headers } from "next/headers";
export async function getRequestHeaderTimezone() { const headersList = await headers();
/** * Vercel includes ip timezone to request header */ const requestTimezone = headersList.get("x-vercel-ip-timezone");
return requestTimezone;}
export async function convertTimezoneToGMT(defaultTimezone?: string) { const requestTimezone = await getRequestHeaderTimezone();
/** * Server region timezone as fallback */ const clientTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
const timezone = defaultTimezone || requestTimezone || clientTimezone;
if (!supportedTimezones.includes(timezone)) return "Etc/UTC";
const msOffset = getTimezoneOffset(timezone);
if (Number.isNaN(msOffset)) return "Etc/UTC";
const hrOffset = Math.round(msOffset / (1000 * 60 * 60)); // avoid weird 30min timezones const offset = hrOffset >= 0 ? `-${hrOffset}` : `+${Math.abs(hrOffset)}`;
return `Etc/GMT${offset}` as const;}
export function getServerTimezoneUTCFormat() { const now = new Date(); const now_utc = new Date(now.toUTCString().slice(0, -4)); // remove the GMT end
return format(now_utc, "LLL dd, y HH:mm:ss (z)", { timeZone: "UTC" });}
export function getServerTimezoneFormat() { return format(new Date(), "LLL dd, y HH:mm:ss (z)");}
export function formatDate(date: Date) { return format(date, "LLL dd, y", { timeZone: "UTC" });}
export function formatDateTime(date: Date) { return format(date, "LLL dd, y HH:mm:ss zzz", { timeZone: "UTC" });}
export function formatTime(date: Date) { return format(date, "HH:mm:ss zzz", { timeZone: "UTC" });}
/** * All supported browser / node timezones */export const supportedTimezones = Intl.supportedValuesOf("timeZone");
export async function getClosestTimezone(defaultTimezone?: string) { const requestTimezone = await getRequestHeaderTimezone();
/** * Server region timezone as fallback */ const clientTimezone = Intl.DateTimeFormat().resolvedOptions().timeZone;
const timezone = defaultTimezone || requestTimezone || clientTimezone;
if (!supportedTimezones.includes(timezone)) return "CET";
const now = new Date();
const estTime = utcToZonedTime(now, "America/New_York"); const pstTime = utcToZonedTime(now, "America/Los_Angeles"); const cetTime = utcToZonedTime(now, "Europe/Paris"); const utcTime = utcToZonedTime(now, "UTC");
const timeDifferences = { EST: Math.abs(now.getTime() - estTime.getTime()), PST: Math.abs(now.getTime() - pstTime.getTime()), CET: Math.abs(now.getTime() - cetTime.getTime()), UTC: Math.abs(now.getTime() - utcTime.getTime()), };
const closestTimezone = Object.keys(timeDifferences).reduce( (prev, curr) => { if ( timeDifferences[curr as keyof typeof timeDifferences] < prev.minDifference ) { return { timezone: curr, minDifference: timeDifferences[curr as keyof typeof timeDifferences], }; } return prev; }, { timezone: "UTC", minDifference: Number.POSITIVE_INFINITY }, );
return closestTimezone.timezone as keyof typeof timeDifferences;}