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| /** | |
| * Human readable elapsed or remaining time (example: 3 minutes ago) | |
| * @param {Date|Number|String} date A Date object, timestamp or string parsable with Date.parse() | |
| * @return {string} Human readable elapsed or remaining time | |
| * @author github.com/victornpb | |
| */ | |
| function fromNow(date) { | |
| const SECOND = 1000; | |
| const MINUTE = 60 * SECOND; | |
| const HOUR = 60 * MINUTE; | |
| const DAY = 24 * HOUR; | |
| const WEEK = 7 * DAY; | |
| const MONTH = 30 * DAY; | |
| const YEAR = 365 * DAY; | |
| const intervals = [ | |
| { ge: 2 * YEAR, divisor: YEAR, elapsed: '# years ago', remaining: 'in # years' }, | |
| { ge: YEAR, divisor: YEAR, elapsed: 'last year', remaining: 'in a year' }, | |
| { ge: 2 * MONTH, divisor: MONTH, elapsed: '# months ago', remaining: 'in # months' }, | |
| { ge: MONTH, divisor: MONTH, elapsed: 'last month', remaining: 'in a month' }, | |
| { ge: 2 * WEEK, divisor: WEEK, elapsed: '# weeks ago', remaining: 'in # weeks' }, | |
| { ge: WEEK, divisor: WEEK, elapsed: 'last week', remaining: 'in a week' }, | |
| { ge: 2 * DAY, divisor: DAY, elapsed: '# days ago', remaining: 'in # days' }, | |
| { ge: DAY, divisor: DAY, elapsed: 'yesterday', remaining: 'tomorrow', }, | |
| { ge: 2 * HOUR, divisor: HOUR, elapsed: '# hours ago', remaining: 'in # hours' }, | |
| { ge: HOUR, divisor: HOUR, elapsed: 'an hour ago', remaining: 'in an hour' }, | |
| { ge: 2 * MINUTE, divisor: MINUTE, elapsed: '# minutes ago', remaining: 'in # minutes' }, | |
| { ge: MINUTE, divisor: MINUTE, elapsed: 'a minute ago', remaining: 'in a minute' }, | |
| { ge: 30 * SECOND, divisor: SECOND, elapsed: '# seconds ago', remaining: 'in # seconds' }, | |
| { ge: 0, divisor: 1, elapsed: 'just now', remaining: 'just now' }, | |
| ]; | |
| const diff = Date.now() - (typeof date === 'object' ? date : new Date(date)).getTime(); | |
| const diffAbs = Math.abs(diff); | |
| for (const interval of intervals) { | |
| if (diffAbs >= interval.ge) { | |
| const x = Math.round(Math.abs(diff) / interval.divisor); | |
| const isFuture = diff < 0; | |
| return String(isFuture ? interval.remaining : interval.elapsed).replace('#', x); | |
| } | |
| } | |
| } |
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