math-interval-2/README.md

Create math intervals like '(-∞, 100]' and test values

## math-interval

Please have look at [wikipedia](https://en.wikipedia.org/wiki/Interval_(mathematics)) if you don't know what it means.

### Install

`yarn add math-interval-2` or `npm install --save math-interval-2`

Big thanks to `@npm` for finding `math-interval` "too similar" to an existing package, that's why I had to suffix `-2`

### Usage

```typescript
import { MathInterval } from 'math-interval-2'

const interval = MathInterval.closedOpen(1, 5);
interval.contains(1) // true
interval.contains(3) // true
interval.contains(5) // false

const another = MathInterval.openClosed(4, 10);

interval.isConnectedTo(another) // true;
interval.encloses(another) // false
iterval.span(another) // [1, 10]
iterval.intersection(another) // (4, 5]
```

For more, please check [tests](./src/index.spec.ts) and [docs](https://harunurhan.github.io/math-interval/classes/_index_.mathinterval.html)

#### Date support

For now you have to convert it to number with `date.getTime()`, see [Date.prototype.getTime()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/getTime), you can track the direct date support via [#5](https://github.com/harunurhan/math-interval/issues/5).