# level-concat-iterator

> Concatenate entries from an iterator into an array.

Latest version **3.1.0** (published 2021-11-04) · MIT license · 0 weekly downloads

> **Deprecated.** This package is deprecated.

## Install

```sh
npm install level-concat-iterator
pnpm add level-concat-iterator
yarn add level-concat-iterator
bun add level-concat-iterator
```

## Health

**Score 10/100 (F)** — status: deprecated.

Negative: deprecated.

## Facts

| | |
|---|---|
| Version | 3.1.0 |
| Published | 2021-11-04 |
| First published | 2018-06-23 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Node | >=10 |
| Dependencies | 1 |
| Unpacked size | 8.3 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 4 |
| Author | Lars-Magnus Skog |
| Maintainers | vweevers, juliangruber, ralphtheninja |
| Keywords | level, concatenate, iterator, array |

## Links

- npm: https://www.npmjs.com/package/level-concat-iterator
- Repository: https://github.com/Level/concat-iterator
- Issues: https://github.com/Level/concat-iterator/issues
- npm.io page: https://npm.io/package/level-concat-iterator

## Dependencies (1)

- [catering](https://npm.io/package/catering.md) ^2.1.0

## Recent versions

- 3.1.0 (latest) — 2021-11-04
- 3.0.0 — 2021-04-08
- 2.0.1 — 2019-04-01
- 2.0.0 — 2018-06-27
- 1.0.0 — 2018-06-23

## README

# level-concat-iterator

**Concatenate entries from an iterator into an array.**

[![level badge][level-badge]](https://github.com/Level/awesome)
[![npm](https://img.shields.io/npm/v/level-concat-iterator.svg)](https://www.npmjs.com/package/level-concat-iterator)
[![Node version](https://img.shields.io/node/v/level-concat-iterator.svg)](https://www.npmjs.com/package/level-concat-iterator)
[![Test](https://img.shields.io/github/workflow/status/Level/concat-iterator/Test?label=test)](https://github.com/Level/concat-iterator/actions/workflows/test.yml)
[![Coverage](https://img.shields.io/codecov/c/github/Level/supports?label=&logo=codecov&logoColor=fff)](https://codecov.io/gh/Level/supports)
[![Standard](https://img.shields.io/badge/standard-informational?logo=javascript&logoColor=fff)](https://standardjs.com)
[![Common Changelog](https://common-changelog.org/badge.svg)](https://common-changelog.org)
[![Donate](https://img.shields.io/badge/donate-orange?logo=open-collective&logoColor=fff)](https://opencollective.com/level)

## Usage

```js
const concat = require('level-concat-iterator')
const level = require('level')

const db = level('./db')

db.put('foo', 'bar', function (err) {
  if (err) throw err

  concat(db.iterator(), function (err, entries) {
    if (err) throw err

    // [{ key: 'foo', value: 'bar' }]
    console.log(entries)
  })
})
```

With promises:

```js
await db.put('foo', 'bar')
const entries = await concat(db.iterator())
```

_If you are upgrading: please see [`UPGRADING.md`](UPGRADING.md)._

## API

### `concat(iterator[, callback])`

Takes an `abstract-leveldown` compatible `iterator` as first parameter and calls the `callback` with an array of entries, where each entry is an object in the form `{ key, value }`. Calls the `callback` with an error if `iterator.next()` or `iterator.end()` errors. If no callback is provided, a promise is returned.

## Contributing

[`Level/concat-iterator`](https://github.com/Level/concat-iterator) is an **OPEN Open Source Project**. This means that:

> Individuals making significant and valuable contributions are given commit-access to the project to contribute as they see fit. This project is more like an open wiki than a standard guarded open source project.

See the [Contribution Guide](https://github.com/Level/community/blob/master/CONTRIBUTING.md) for more details.

## Donate

Support us with a monthly donation on [Open Collective](https://opencollective.com/level) and help us continue our work.

## License

[MIT](LICENSE)

[level-badge]: https://leveljs.org/img/badge.svg

---
_Source: https://npm.io/package/level-concat-iterator · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._