1 files changed, 25 insertions, 0 deletions
diff --git a/src/utils/datetime.ts b/src/utils/datetime.ts
index 3a2cd25..c32fde0 100644
--- a/src/utils/datetime.ts
+++ b/src/utils/datetime.ts
@@ -41,3 +41,28 @@ export function toIso8601FullUTC(date: Date): string {
 }
 
 const pad = (num: number, len = 2) => String(Math.abs(num)).padStart(len, "0");
+
+export function getRelativeTimeUnit(
+  date: Date,
+  now: Date = new Date(),
+): Parameters<Intl.RelativeTimeFormat["format"]> {
+  const diffMs = date.getTime() - now.getTime();
+
+  const seconds = diffMs / 1000;
+  const minutes = seconds / 60;
+  const hours = minutes / 60;
+  const days = hours / 24;
+  const weeks = days / 7;
+  const months = days / 30;
+  const quarters = months / 3;
+  const years = days / 365;
+
+  if (Math.abs(years) >= 1) return [Math.round(years), "year"];
+  if (Math.abs(quarters) >= 1) return [Math.round(quarters), "quarter"];
+  if (Math.abs(months) >= 1) return [Math.round(months), "month"];
+  if (Math.abs(weeks) >= 1) return [Math.round(weeks), "week"];
+  if (Math.abs(days) >= 1) return [Math.round(days), "day"];
+  if (Math.abs(hours) >= 1) return [Math.round(hours), "hour"];
+  if (Math.abs(minutes) >= 1) return [Math.round(minutes), "minute"];
+  return [Math.round(seconds), "second"];
+}