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

> A tiny (174B) library to detect `offline` status & respond to changes in the browser.

This module exposes three module definitions:

* **ES Module**: `dist/is-offline.es.js`
* **CommonJS**: `dist/is-offline.js`
* **UMD**: `dist/is-offline.min.js`

If using the UMD bundle, the library is exposed as `is-offline` globally.


## Install

```
$ npm install --save is-offline
```


## Usage

```js
import { check, watch } from 'is-offline';

let foobar = bool => console.log('Am I offline?', bool);

// Check if currently offline
check().then(foobar);

// Setup a "watcher" to respond to all online/offline changes
let unwatch = watch(foobar);

// The "watcher" will be active until it's deactivated
unwatch();
```

## API

### isOffline.check()

Returns: `Promise`

Resolves a `Boolean` to indicate offline status. For clarity, `true` means that you are offline.

### isOffline.watch(fn)

Returns: `Function`

Returns a function that is used to disable/unmount the event listeners.

#### fn

Type: `Function`

The function to run whenever the network status changes. It receives a `Boolean` value, just like [`isOffline`](#isofflinecheck).


## License

MIT © [Luke Edwards](https://lukeed.com)


A tiny (174B) library to detect `offline` status & respond to changes in the browser. 

Meet the Socket team at RSAC (April 28 – May 1)

is-offline

A tiny (174B) library to detect `offline` status & respond to changes in the browser.

lukeed

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is-offline

is-offline

Install

Usage

API

isOffline.check()

isOffline.watch(fn)

fn

License

Keywords

Related posts

is-offline

Install

Usage

API

isOffline.check()

isOffline.watch(fn)

fn

License

Keywords

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