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Time Ago.js
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const oneDay = 60 * 60 * 24 * 1000 | |
const weekDays = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday'] | |
const months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'] | |
const getTime = (date: Date) => { | |
const amPM = date.getHours() > 12 ? 'PM' : 'AM' | |
const time = [date.getHours() % 12, String(date.getMinutes()).padStart(2, '0')].join(':') | |
return time + ' ' + amPM | |
} | |
const ordinal = (i) => { | |
const j = i % 10, | |
k = i % 100 | |
if (j == 1 && k != 11) { | |
return i + 'st' | |
} | |
if (j == 2 && k != 12) { | |
return i + 'nd' | |
} | |
if (j == 3 && k != 13) { | |
return i + 'rd' | |
} | |
return i + 'th' | |
} | |
const timeAgo = (date: Date) => { | |
const currentDate = new Date() | |
if (date > currentDate) { | |
throw new Error('errrr') | |
} | |
const diffInDays = (currentDate.getTime() - date.getTime()) / oneDay | |
if (diffInDays < 7) { | |
const time = getTime(date) | |
const actualDays = currentDate.getDay() - date.getDay() | |
const dayOfWeek = date.getDay() % 7 | |
if (actualDays == 0) { | |
return 'Today, ' + time | |
} else if (actualDays == 1) { | |
return 'Yesterday, ' + time | |
} else { | |
return weekDays[dayOfWeek] + ', ' + time | |
} | |
} | |
return [months[date.getMonth()], ordinal(date.getDate())].join(' ') | |
} | |
export default timeAgo |
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