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A TypeScript module for handling device detection and status classes.
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Device Manager

A TypeScript module for handling device detection and status classes.


Download Device Manager via NPM:

npm i --save @pageworks/device-manager

Once the package is installed import the package:

import DeviceManager from '@pageworks/device-manager';

Using Device Manager

Start by instantiating a new DeviceManager class with new DeviceManager();. The Device Manager class take two optional parameters. First is a boolean for enabling debug mode, by default this value is false. The second value is a boolean telling Device Manager if you want the status classes added to the document, the default value is false.

Device Manager offers several static functions that can be called to check the users' browser agent. To use these functions combine DeviceManager with one of the function names from the table below. (ex: DeviceManager.isIE).

Function Return Default
isChrome boolean false
isIE boolean false
isEdge boolean false
isSafari boolean false
isFirefox boolean false
isOpera boolean false
isBlinkEngine boolean false
connection NetworkInformation undefined

Using The Custom Touch Class

In order to fix the annoying sticky :hover status on mobile/touch devices Device Manager offers a simple way to track touch classes. To see the custom touch classes in action view the demo on a device that supports touch input.

Working With Custom Touch

To add the custom touch status tracking to any element just add the js-touch class.

<div class="js-touch">
    <span>Touch Me!</span>

Styling Raw Touch

Any element with js-touch will toggle the is-touching status class when the element is being touched by the user. You could style elements yourself using the example below.

    border: 2px solid red;
    border-color: blue;

SASS Mixin

The mixin below allows you to easily manage the style of elements only when they're being touched.

@mixin touch{

In order to prevent the sticky status you could also use two other mixins for only applying :hover CSS when the user is not using a touch device or if the device supports touch but the user isn't using touch.

@mixin hover{
    &:hover{ & {
        } & {

@mixin active{
    &:active{ & {

Experimental NetworkInformation API

PLEASE NOTE: The NetworkInformation API is still in the initial draft stage but is supported on the majority of mobile browsers. Use on production at your own risk.

The safest way to work the NetworkInformation API in it's current (draft) stage is to use it to restrict features when needed. You should always assume that the NetworkInformation will be undefined. As an example let's say you have an auto-playing background video on the page. The videos load() method should fire if the NetworkInformation is undefined or if the effectiveType is 4g. If the type is 3g, 2g, or slow-2g you could use a background image instead. This won't prevent you from wasting mobile users date since LTE connections are 4g and any device connected via WIFI are also 4g you'll need to assume someone on 4g is connected via WIFI and data isn't that big of an issue.

Suggested Uses:

  • Always assume NetworkInformation will return undefined
  • Only use NetworkInformation to optimize the loading speed of your website/application
  • Assume any device on a 4g connection is using WIFI
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