You've already forked AstralRinth
forked from didirus/AstralRinth
58 lines
1.7 KiB
TypeScript
58 lines
1.7 KiB
TypeScript
/**
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* Human readable elapsed or remaining time (example: 3 minutes ago)
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* @author https://github.com/victornpb
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* @see https://stackoverflow.com/a/67338038/938822
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*/
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export function ago(
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/** A Date object, timestamp or string parsable with Date.parse() */
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date: string | number | Date,
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/** A Date object, timestamp or string parsable with Date.parse() */
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nowDate: string | number | Date = Date.now(),
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/** A Intl formater */
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rft: Intl.RelativeTimeFormat = new Intl.RelativeTimeFormat(undefined, { numeric: 'auto' })
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): string {
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const SECOND = 1000
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const MINUTE = 60 * SECOND
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const HOUR = 60 * MINUTE
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const DAY = 24 * HOUR
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const WEEK = 7 * DAY
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const MONTH = 30 * DAY
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const YEAR = 365 * DAY
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const intervals = [
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{ ge: YEAR, divisor: YEAR, unit: 'year' },
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{ ge: MONTH, divisor: MONTH, unit: 'month' },
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{ ge: WEEK, divisor: WEEK, unit: 'week' },
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{ ge: DAY, divisor: DAY, unit: 'day' },
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{ ge: HOUR, divisor: HOUR, unit: 'hour' },
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{ ge: MINUTE, divisor: MINUTE, unit: 'minute' },
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{ ge: 30 * SECOND, divisor: SECOND, unit: 'seconds' },
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{ ge: 0, divisor: 1, text: 'just now' },
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]
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const now = typeof nowDate === 'object' ? nowDate.getTime() : new Date(nowDate).getTime()
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const diff = now - (typeof date === 'object' ? date : new Date(date)).getTime()
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const diffAbs = Math.abs(diff)
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for (const interval of intervals) {
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if (diffAbs >= interval.ge) {
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const x = Math.round(Math.abs(diff) / interval.divisor)
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const isFuture = diff < 0
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return interval.unit ? rft.format(isFuture ? x : -x, interval.unit as Unit) : interval.text
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}
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}
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}
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type Unit =
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| 'second'
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| 'seconds'
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| 'minute'
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| 'minutes'
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| 'hour'
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| 'hours'
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| 'day'
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| 'days'
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| 'week'
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| 'weeks'
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| 'month'
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| 'months'
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| 'year'
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| 'years'
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