| 39 | } |
| 40 | |
| 41 | export function relativeTimeStr( |
| 42 | dateDiff?: number, |
| 43 | locales: string | string[] = 'en', |
| 44 | options?: Intl.RelativeTimeFormatOptions, |
| 45 | ): string { |
| 46 | if (dateDiff == null) { |
| 47 | return ''; |
| 48 | } |
| 49 | |
| 50 | const absDateDiff = Math.abs(dateDiff); |
| 51 | |
| 52 | const rtf = new Intl.RelativeTimeFormat(locales, options); |
| 53 | |
| 54 | if (absDateDiff < 1000) { |
| 55 | return 'now'; |
| 56 | } else if (absDateDiff < 1000 * 60) { |
| 57 | return rtf.format(Math.round(dateDiff / 1000), 'second'); |
| 58 | } else if (absDateDiff < 1000 * 60 * 60) { |
| 59 | return rtf.format(Math.round(dateDiff / (1000 * 60)), 'minute'); |
| 60 | } else if (absDateDiff < 1000 * 60 * 60 * 24) { |
| 61 | return rtf.format(Math.round(dateDiff / (1000 * 60 * 60)), 'hour'); |
| 62 | } else if (absDateDiff < 1000 * 60 * 60 * 24 * 30) { |
| 63 | return rtf.format(Math.round(dateDiff / (1000 * 60 * 60 * 24)), 'day'); |
| 64 | } else if (absDateDiff < 1000 * 60 * 60 * 24 * 30 * 12) { |
| 65 | return rtf.format( |
| 66 | Math.round(dateDiff / (1000 * 60 * 60 * 24 * 30)), |
| 67 | 'month', |
| 68 | ); |
| 69 | } else { |
| 70 | return rtf.format( |
| 71 | Math.round(dateDiff / (1000 * 60 * 60 * 24 * 30 * 12)), |
| 72 | 'year', |
| 73 | ); |
| 74 | } |
| 75 | } |