---
description: Get the next value of an iterator
---

# next

```erlang
next :: Iterator iterator => Any value
```

## description

Returns the next value of an [`Iterator`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterator_protocol). It's functionnally equivalent to `iterator => iterator.next().value`.

## example

```javascript
import { next } from 'conductor'

const iterator = new Set([3, 1, 4]).values()
next(numbers) // 3
next(numbers) // 1
next(numbers) // 4
next(numbers) // undefined
```