web-device-info

Find out execution device info, e.g. if executing device has DOM available, or is mobile, tablet or desktop device. Customizable using environment variables.

If using yarn:

yarn add web-device-info

If using npm:

npm install web-device-info

To use in code:

• canUseDOM is a variable which is true if execution device has DOM available.

Declare import { canUseDOM } from 'web-device-info'

Then in code:

if ( canUseDOM ) {}

• isMobileScreenSize() is a function which takes optional isMobileScreenSize check breakpoint. It tells whether execution device current window size is in mobile view range or not.

Declare import { isMobileScreenSize, isTabletScreenSize, isDesktopScreenSize } from 'web-device-info'

Then in code:

if ( isMobileScreenSize(768) ) {}

• isMobile is a variable which returns if execution device is mobile or not.

Declare import { isMobile, isIOS, isMac, isWindows, isLinux } from 'web-device-info'

Then in code:

if ( isMobile ) {}

May support ES5 environment also.

Default device check conditions:

• Mobile < 768px
• >= 768px Tablet <= 1024px
• > 1024px Desktop <= 1200px
• > 1200px Large desktop
• > 1440px Extra large desktop

Customization of default using environment variables (e.g. can be set in .env files in React)

• RESPONSIVE_STRATEGY = 'mobile_first' Default value = 'desktop_first' Possible values are 'mobile_first', 'desktop_first' or 'table_first'

• LARGE_DESKTOP_BREAKPOINT = 1440

• DESKTOP_BREAKPOINT = 1200

• TABLET_BREAKPOINT = 1024

• MOBILE_BREAKPOINT = 768

Editor Configuration

• Editor of your preference. I used some VSCode specific config in .vscode folder and recommend plugins for enhanced experience.

Recommended VSCode Extensions:

• Prettier (Official) - Code formatter
• ESLint (Official) - Real time JS syntax validation

Technologies Used

• Rollup.js
• Typescript + ESM
• Yarn
• Prettier + ESlint
• Jest lint setup, jest can be added
• Built on boilerplate https://github.com/n10l/ts-lib-boilerplate

Available Scripts [For development]

In the project directory, you can run:

yarn build

To build the project

yarn watch

To build with livereload

yarn fix:all

Runs prettier formatter followed by eslint, to format code and fix lint issues. Prettier is not good enough to run alone, must always be followed lint fixes included in this command.