# downtime-detector

> Monitor your favorite services.

Latest version **0.0.3** (published 2022-07-23) · MIT license · 0 weekly downloads

## Install

```sh
npm install downtime-detector
pnpm add downtime-detector
yarn add downtime-detector
bun add downtime-detector
```

## Health

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

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support; pre 1.0.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 0.0.3 |
| Published | 2022-07-23 |
| First published | 2022-06-20 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 1 |
| Unpacked size | 6 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 4 |
| Author | Toxic Dev |
| Maintainers | toxic-dev |
| Keywords | pinger, ping, monitor, monitoring |

## Links

- npm: https://www.npmjs.com/package/downtime-detector
- Repository: https://github.com/TheRealToxicDev/DowntimeDetector
- Homepage: https://github.com/TheRealToxicDev/DowntimeDetector#readme
- Issues: https://github.com/TheRealToxicDev/DowntimeDetector/issues
- npm.io page: https://npm.io/package/downtime-detector

## Dependencies (1)

- [node-fetch](https://npm.io/package/node-fetch.md) ^3.2.6

## Recent versions

- 0.0.3 (latest) — 2022-07-23
- 0.0.2 — 2022-07-23
- 0.0.1 — 2022-06-20

## README

# Downtime Detector
Simple module that allows you to easily monitor websites, and create a status page.

> Still a work in progress and not ready for prod. Check back soon!

## Getting started

### Instalation

With npm :

```sh-session
npm install downtime-detector
```

With yarn :

```sh-session
yarn add downtime-detector
```

## Usage

Import the module :

CommonJS syntax :

```js
const { DownDetector } = require("downtime-detector");
```

Module ES syntax :

```js
import { DownDetector } from "downtime-detector";
```

Create a new DownDetector with an URL (string) as a parameter :

```js
const Monitor = new DownDetector("https://website-example.com", options);
```

### Options

Object

| PARAMETER | TYPE                                   | OPTIONAL | DEFAULT   | DESCRIPTION                                    |
| --------- | -------------------------------------- | -------- | --------- | ---------------------------------------------- |
| interval  | number                                 | ✓        | 3000ms    | Interval for check site                        |
| retries   | number                                 | ✓        | 3         | Retries before create an outage                |
| timeout   | number                                 | ✓        | 3000ms    | Maximum waiting time before creating an outage |
| headers   | { [key: string]: string } \| undefined | ✓        | undefined | Additional headers to be attached to requests  |

## Events

---

### up

Emitted when site is online

Parameter : status

| PROPERTIES | TYPE   | DESCRIPTION               |
| ---------- | ------ | ------------------------- |
| statusCode | number | The response status code  |
| statusText | string | The response status text  |
| url        | string | The url of website        |
| ping       | number | The ping latency (in ms)  |
| Uptime     | number | Availability time (in ms) |

### outage

Emitted when site is have an outage

Parameter : status

| PROPERTIES     | TYPE   | DESCRIPTION                 |
| -------------- | ------ | --------------------------- |
| statusCode     | number | The response status code    |
| statusText     | string | The response status text    |
| url            | string | The url of website          |
| ping           | number | The ping latency (in ms)    |
| unavailability | number | Unavailability time (in ms) |

### error

Emitted when an error occurred

Parameter : error

## Properties

---

### available

Return true if site is available else return false

Return :

Boolean

### ping

Return the last ping (in ms) or null if it doesn't exist

Return :

Number or Null

### uptime

Return the uptime (in ms) or null if it doesn't exist

Return :

Number or Null

### unavailability

Return the unavailability or null if it doesn't exist

Return :

Number or Null

## Methods

---

## start()

Start the monitoring of website

Return :

Boolean

```js
Monitor.start();
```

## restart()

Restart the monitoring of website

Return :

Boolean

```js
Monitor.restart();
```

## stop()

Stop the monitoring of website

Return :

Boolean

```js
Monitor.stop();
```

## setInterval(newInterval)

Change the interval check

Params :

newInterval : The new interval in ms (number)

Return :

Boolean

```js
Monitor.setInterval(200);
```

## setURL(newURL)

Change the ping endpoint

Params :

newURL : The new url (string).

Return :

Boolean

```js
Monitor.setURL("https://www.exempla-website.com");
```

## Example

```js
const { DownDetector } = require("downtime-detector");

const Monitor = new DownDetector("https://website-example.com", {
  interval: 3000,
  timeout: 5000,
});

Monitor.start();
console.log(Monitor.infos);

Monitor.on("outage", (outage) => {
  console.log(outage);
});

Monitor.on("up", (up) => {
  console.log(up);
});
Monitor.on("error", (error) => {
  console.log(error);
});
```

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