cloudflare__vinext/examples/hackernews/lib/time-ago.js

import ms from 'ms'

const map = {
  s: 'seconds',
  ms: 'milliseconds',
  m: 'minutes',
  h: 'hours',
  d: 'days',
}

export default (date) =>
  date ? ms(new Date() - date).replace(/[a-z]+/, (str) => ' ' + map[str]) : ''