Relative Date

Tiny function that provides relative, human-readable dates.

Installation

npm install tiny-relative-date

Usage

The module returns a relativeDate function with English translations by default.

const relativeDate = require('tiny-relative-date')

The relativeDate function accepts date strings or Date objects.

relativeDate('2017-06-25 09:00') // '12 hours ago'
relativeDate(new Date()) // 'just now'

The value of "now" can also be passed as a second parameter.

const now = new Date('2017-06-25 08:00:00')
const date = new Date('2017-06-25 07:00:00')

relativeDate(date, now) // 'an hour ago'

Using a non-English locale

The tiny-relative-date module can be initialised with a locale. See the translations directory for a list of available locales.

const relativeDateFactory = require('tiny-relative-date/lib/factory')
const deTranslations = require('tiny-relative-date/translations/de')
const relativeDate = relativeDateFactory(deTranslations)

relativeDate(new Date()) // 'gerade eben'

Using a custom locale

You can also use a completely custom locale by passing a translations object instead of a locale string. Translations can be plain strings with a {{time}} placeholder, or they can be functions. See the Adding new locales section below for a list of translation keys.

const relativeDateFactory = require('tiny-relative-date/lib/factory')
const relativeDate = relativeDateFactory({
  hoursAgo: '{{time}}h ago',
  daysAgo: (days) => `${days * 24}h ago`
})

relativeDate('2017-06-25 07:00:00') // '2h ago'
relativeDate('2017-06-24 06:00:00') // '27h ago'

Contributing

Contributions are welcome! Running this project locally requires Git and Node.js.

git clone [email protected]:wildlyinaccurate/tiny-relative-date.git
cd tiny-relative-date/
npm install

Once you are set up, you can make changes to files in the src/, spec/ and translations/ directories. Build any changes you make by running

npm run build

And run the tests with

npm run test

Adding new locales

If you would like to add a new locale, please create a JSON file in the translations directory and ensure it has the following keys:

| Key | Default value ("en" locale) | |------------------------|-----------------------------| | justNow | just now | | secondsAgo | {{time}} seconds ago | | aMinuteAgo | a minute ago | | minutesAgo | {{time}} minutes ago | | anHourAgo | an hour ago | | hoursAgo | {{time}} hours ago | | aDayAgo | yesterday | | daysAgo | {{time}} days ago | | aWeekAgo | a week ago | | weeksAgo | {{time}} weeks ago | | aMonthAgo | a month ago | | monthsAgo | {{time}} months ago | | aYearAgo | a year ago | | yearsAgo | {{time}} years ago | | overAYearAgo | over a year ago | | secondsFromNow | {{time}} seconds from now | | aMinuteFromNow | a minute from now | | minutesFromNow | {{time}} minutes from now | | anHourFromNow | an hour from now | | hoursFromNow | {{time}} hours from now | | aDayFromNow | tomorrow | | daysFromNow | {{time}} days from now | | aWeekFromNow | a week from now | | weeksFromNow | {{time}} weeks from now | | aMonthFromNow | a month from now | | monthsFromNow | {{time}} months from now | | aYearFromNow | a year from now | | yearsFromNow | {{time}} years from now | | overAYearFromNow | over a year from now |