uhrwerk/README.md
2019-12-10 12:21:50 +01:00

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# uhrwerk 🕰
Minimal time duration utility. Replacement for MomentJS Durations. If you are looking into the time component of MomentJS check out this awesome library [dayjs](https://github.com/iamkun/dayjs).
📦 It's **tiny**: [1.6kB](https://bundlephobia.com/result?p=uhrwerk@1.0.0) vs moment js [231.7kb](https://bundlephobia.com/result?p=moment@latest)
**Typescript typings included**
## Quickstart 🚀
```typescript
// Whatever import you prefer
// const { Duration } = require('uhrwerk')
import { Duration } from 'uhrwerk'
const d = new Duration(10, 'days')
d.subtract(1, 'week')
d.add(5, 'minutes')
d.humanize() // '3 days'
d.minutes() // 5
d.asMinute() // 4325
d.subtract(3, 'days')
d.humanize() // 'a few minutes'
```
### Reference 📒
#### `new Duration(amount, interval)`
- amount: number
- interval:
- millisecond, milliseconds, ms
- second, seconds, s
- minute, minutes, m
- hour, hours, h
- day, days, d
- week, weeks, w
- year, years, y
###### Examples
```javascript
const a = new Duration(1, 'day')
const b = new Duration(2, 'days')
const c = new Duration(0.5, 'year')
const d = new Duration (Date.now(), 'ms')
```
#### `.add(amount, interval)`
Adds a specified amount to an existing duration
###### Example
```javascript
const a = new Duration(1, 'day')
a.add(12, 'hours')
a.asHour() // 36
```
#### `.subtract(amount, interval)`
Subtracts a specified amount to an existing duration
###### Example
```javascript
const a = new Duration(1, 'day')
a.subtract(12, 'hours')
a.asHour() // 12
```
#### Getters
Gets the amount of time interval, not the total time
- `.milliseconds()`
- `.seconds()`
- `.minutes()`
- `.hours()`
- `.days()`
- `.weeks()`
- `.years()`
###### Example
```javascript
const a = new Duration(1, 'day')
a.days() // 1
a.add(5, 'minutes')
a.days() // 1
a.add(1, 'year')
a.days() // 1
a.add(24, 'hours')
a.days() // 2
```
#### As interval
Calculates the time duration as a time interval.
- `.asMilliseconds()`
- `.asSeconds()`
- `.asMinutes()`
- `.asHours()`
- `.asDays()`
- `.asWeeks()`
- `.asYears()`
###### Example
```javascript
const a = new Duration(1, 'day')
a.asHours() // 24
```
#### `.humanize()`
This functions takes a duration and tries to make a human readable version out of it.
###### Example
```javascript
const a = new Duration(4, 'seconds')
a.humanize() // 'a moment'
a.add(5, 'minutes')
a.humanize() // 'a few minutes'
```
##### Own rules / i18n
If you want to pass a different humanize function you can.
The order of the array is important. The first match will return, like in a standard server router. The first argument is a function that takes the duration and returns a boolean. The second takes also matched duration and returns a string for the user.
###### Example
```javascript
const humanizer = [
[d => d.days() > 1, d => `${d.days()} days`],
[d => d.days() > 0, d => `1 day`],
[() => true, () => 'catch all, below 1 day'],
]
const a = new Duration(2, 'days')
a.humanize(humanizer) // '2 days'
a.subtract(1, 'day')
a.humanize(humanizer) // '1 day'
a.subtract(12, 'hours')
a.humanize(humanizer) // 'catch all, below 1 day'
```