timeAgo.ts

// Copyright 2024 the JSR authors. All rights reserved. MIT license.
export function timeAgo(date: Date | string): string {
  const now = new Date();
  const past = new Date(date);
  const diff = Math.abs(now.getTime() - past.getTime());

  const duration = {
    years: Math.floor(diff / (1000 * 60 * 60 * 24 * 365)),
    months: Math.floor(
      (diff % (1000 * 60 * 60 * 24 * 365)) / (1000 * 60 * 60 * 24 * 30),
    ),
    days: Math.floor(
      (diff % (1000 * 60 * 60 * 24 * 30)) / (1000 * 60 * 60 * 24),
    ),
    hours: Math.floor((diff % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)),
    minutes: Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60)),
    seconds: Math.floor((diff % (1000 * 60)) / 1000),
  };

  // Force english because JSR is an English-only project
  // @ts-ignore - TS doesn't know about this API yet
  const formatter = new Intl.DurationFormat("en", { style: "long" });
  return formatter.format(duration) + " ago";
}