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Monorepo for Tangled tangled.org
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TypeScript
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990const DIVISIONS: { amount: number; unit: Intl.RelativeTimeFormatUnit }[] = [ { amount: 60, unit: "seconds" }, { amount: 60, unit: "minutes" }, { amount: 24, unit: "hours" }, { amount: 7, unit: "days" }, { amount: 4.34524, unit: "weeks" }, { amount: 12, unit: "months" }, { amount: Number.POSITIVE_INFINITY, unit: "years" }];
const rtf = new Intl.RelativeTimeFormat("en", { numeric: "auto" });const dtf = new Intl.DateTimeFormat("en", { year: "numeric", month: "short", day: "numeric" });// the appview's longTimeFmt ("Jan 2, 2006, 3:04 PM MST")const dtfFull = new Intl.DateTimeFormat("en", { year: "numeric", month: "short", day: "numeric", hour: "numeric", minute: "2-digit", timeZoneName: "short"});
// "3 days ago", "in 2 hours", etc.export const relativeTime = (input: string | Date, now: Date = new Date()): string => { const date = typeof input === "string" ? new Date(input) : input; if (Number.isNaN(date.getTime())) return ""; let duration = (date.getTime() - now.getTime()) / 1000; for (const division of DIVISIONS) { if (Math.abs(duration) < division.amount) return rtf.format(Math.round(duration), division.unit); duration /= division.amount; } return rtf.format(Math.round(duration), "years");};export const compactRelativeTime = (input: string | Date, now: Date = new Date()): string => { const date = typeof input === "string" ? new Date(input) : input; if (Number.isNaN(date.getTime())) return ""; let duration = Math.abs((now.getTime() - date.getTime()) / 1000); const suffix = date.getTime() > now.getTime() ? "from now" : "ago";
if (duration < 60) return `${Math.floor(duration)}s ${suffix}`; duration /= 60; if (duration < 60) return `${Math.floor(duration)}m ${suffix}`; duration /= 60; if (duration < 24) return `${Math.floor(duration)}h ${suffix}`; duration /= 24; if (duration < 7) return `${Math.floor(duration)}d ${suffix}`; duration /= 7; if (duration < 4.34524) return `${Math.floor(duration)}w ${suffix}`; duration /= 4.34524; if (duration < 12) return `${Math.floor(duration)}mo ${suffix}`; duration /= 12; return `${Math.floor(duration)}y ${suffix}`;};
// mirrors the appview's durationFmt.// under a second reads "0s", so an instant run still differs from one that never ran.export const formatDuration = (ms: number): string => { if (!Number.isFinite(ms) || ms < 0) return ""; const total = Math.floor(ms / 1000); const chunks: [number, string][] = [ [Math.floor(total / 86400), "d"], [Math.floor(total / 3600) % 24, "h"], [Math.floor(total / 60) % 60, "m"], [total % 60, "s"] ]; const parts = chunks .filter(([amount]) => amount !== 0) .map(([amount, unit]) => `${amount}${unit}`); return parts.length > 0 ? parts.join(" ") : "0s";};
export const formatDate = (input: string | Date): string => { const date = typeof input === "string" ? new Date(input) : input; return Number.isNaN(date.getTime()) ? "" : dtf.format(date);};
export const formatDateTime = (input: string | Date): string => { const date = typeof input === "string" ? new Date(input) : input; return Number.isNaN(date.getTime()) ? "" : dtfFull.format(date);};
export const formatCount = (n: number | undefined | null): string => { if (n == null) return ""; if (n < 1000) return String(n); const [scaled, suffix] = n < 1_000_000 ? [n / 1000, "k"] : [n / 1_000_000, "m"]; // truncate so 999,999 reads as 999.9k rather than rounding up to 1000k return `${Math.floor(scaled * 10) / 10}${suffix}`;};