AFK.js
A library to tell whether your user is active or not and when they were last active.
Relies on jQuery for event emitting: use another library (probably using EventEmitter) if your project doesn't already contain jQuery.
Install
$ npm install --save afk.js
Usage
afk; afk; // Time the user was last active (or -1)afk; // Pretty descriptive, returns boolean
The active event won't fire multiple times in a row, the inactive event has to fire before it fires again.
Config
afkconfigactiveTime = 10000;
The number of ms until the user is considered inactive.
afkconfigvisibility = true;
If true, the page visibility API will be used to set the user inactive if the page goes out of focus (e.g. the user changes to a different tab).
License
Released under the MIT license.