# is-defined

> Check if an identifier is defined

Latest version **1.0.0** (published 2015-07-13) · MIT license · 0 weekly downloads

## Install

```sh
npm install is-defined
pnpm add is-defined
yarn add is-defined
bun add is-defined
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.0 |
| Published | 2015-07-13 |
| First published | 2015-07-13 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 0 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 2 |
| Author | Ben Drucker |
| Maintainers | bendrucker |
| Keywords | defined, code, js |

## Links

- npm: https://www.npmjs.com/package/is-defined
- Repository: https://github.com/bendrucker/is-defined
- Homepage: https://github.com/bendrucker/is-defined#readme
- Issues: https://github.com/bendrucker/is-defined/issues
- npm.io page: https://npm.io/package/is-defined

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## Recent versions

- 1.0.0 (latest) — 2015-07-13

## README

# is-defined [![Build Status](https://travis-ci.org/bendrucker/is-defined.svg?branch=master)](https://travis-ci.org/bendrucker/is-defined)

> Check if an identifier is defined


## Install

```
$ npm install --save is-defined
```


## Usage

```js
var isDefined = require('is-defined')

isDefined('window')
//=> typeof window !== 'undefined'
```

## API

#### `isDefined(identifier)` -> `string`

##### identifier

*Required*  
Type: `string`

A JavaScript identifier.


## License

MIT © [Ben Drucker](http://bendrucker.me)

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