Bugz

Composable user agent detection using Ramda, powered by ua-parser-js.

Why?

Because browsers have bugs bugz.

MDN offers some good advice about when and when not to use user agent detection.

Yeah, but why another UA library?

Bugz isn't really another library, it's just a lightweight* functional wrapper around ua-parser-js.

* for those already using Ramda.

Install

$ npm install ramda
$ npm install bugz

Ramda is defined as a peer dependency meaning it needs to be defined in your own package.json.

Usage

import { isOSName } from 'bugz';

const isWindows = isOSName('Windows');

if (isWindows(window.navigator.userAgent)) {
    console.log('OS is Windows');
}

import { isOSName, isBrowserName } from 'bugz';
import { allPass } from 'ramda';

const isWindows = isOSName('Windows');
const isFirefox = isBrowserName('Firefox');
const isWindowsFirefox = allPass([
    isWindows,
    isFirefox
]);

if (isWindowsFirefox(window.navigator.userAgent)) {
    console.log('OS is Windows and Browser is Firefox');
}

import { isOSName, isBrowserName, isBrowserVersionLt } from 'bugz';
import { allPass } from 'ramda';

const isWindows = isOSName('Windows');
const isFirefox = isBrowserName('Firefox');
const isBrowserVersionLt3_7 = isBrowserVersionLt('3.7');
const isWindowsFirefoxLt3_7 = allPass([
    isWindows,
    isFirefox,
    isBrowserVersionLt3_7
]);

if (isWindowsFirefoxLt3_7(window.navigator.userAgent)) {
    console.log('OS is Windows and Browser is Firefox < 3.7');
}

API

All functions are curried by default.

about (ua: string) → void
Logs all information obtained from the user agent string to the console.

getBrowser (ua: string) → { name: string, version: string, majorVersion: number }
Returns the browser from the user agent string.

getBrowserName (ua: string) → string
Returns the browser name from the user agent string.

getBrowserVersion (ua: string) → string
Returns the browser version from the user agent string.

getEngine (ua: string) → { name: string, version: string }
Returns the engine from the user agent string.

getEngineName (ua: string) → string
Returns the engine name from the user agent string.

getEngineVersion (ua: string) → string
Returns the engine version from the user agent string.

getOS (ua: string) → { name: string, version: string }
Returns the OS from the user agent string.

getOSName (ua: string) → string
Returns the OS name from the user agent string.

getOSVersion (ua: string) → string
Returns the OS version from the user agent string.

isAndroid (ua: string) → boolean
Returns whether or not the operating system is Android.

isAndroidBrowser (ua: string) → boolean
Returns whether or not the browser is Android Browser.

isBrowserName (name: string) → (ua: string) → boolean
Returns whether or not the browser name is name.

isBrowserVersion (version: string) → (ua: string) → boolean
Returns whether or not the browser version is version.

isBrowserVersionGt (version: string) → (ua: string) → boolean
Returns whether or not the browser version is greater than version.

isBrowserVersionGte (version: string) → (ua: string) → boolean
Returns whether or not the browser version is greater than or equal to version.

isBrowserVersionLt (version: string) → (ua: string) → boolean
Returns whether or not the browser version is less than version.

isBrowserVersionLte (version: string) → (ua: string) → boolean
Returns whether or not the browser version is less than or equal to version.

isChrome (ua: string) → boolean
Returns whether or not the browser is Chrome.

isEdge (ua: string) → boolean
Returns whether or not the browser is Edge.

isEdgeHTML (ua: string) → boolean
Returns whether or not the engine is EdgeHTML.

isEngineName (name: string) → (ua: string) → boolean
Returns whether or not the engine name is name.

isEngineVersion (version: string) → (ua: string) → boolean
Returns whether or not the engine version is version.

isEngineVersionGt (version: string) → (ua: string) → boolean
Returns whether or not the engine version is greater than version.

isEngineVersionGte (version: string) → (ua: string) → boolean
Returns whether or not the engine version is greater than or equal to version.

isEngineVersionLt (version: string) → (ua: string) → boolean
Returns whether or not the engine version is less than version.

isEngineVersionLte (version: string) → (ua: string) → boolean
Returns whether or not the engine version is less than or equal to version.

isFirefox (ua: string) → boolean
Returns whether or not the browser is Firefox.

isGecko (ua: string) → boolean
Returns whether or not the engine is Gecko.

isIE (ua: string) → boolean
Returns whether or not the browser is Internet Explorer.

isIEMobile (ua: string) → boolean
Returns whether or not the browser is Internet Explorer Mobile.

isIOS (ua: string) → boolean
Returns whether or not the operating system is iOS.

isMacOS (ua: string) → boolean
Returns whether or not the operating system is Mac OS.

isMobileSafari (ua: string) → boolean
Returns whether or not the browser is Mobile Safari.

isOSName (name: string) → (ua: string) → boolean
Returns whether or not the OS name is name.

isOSVersion (version: string) → (ua: string) → boolean
Returns whether or not the OS version is version.

isOSVersionGt (version: string) → (ua: string) → boolean
Returns whether or not the OS version is greater than version.

isOSVersionGte (version: string) → (ua: string) → boolean
Returns whether or not the OS version is greater than or equal to version.

isOSVersionLt (version: string) → (ua: string) → boolean
Returns whether or not the OS version is less than version.

isOSVersionLte (version: string) → (ua: string) → boolean
Returns whether or not the OS version is less than or equal to version.

isOpera (ua: string) → boolean
Returns whether or not the browser is Opera.

isOperaMobile (ua: string) → boolean
Returns whether or not the browser is Opera Mobile.

isPresto (ua: string) → boolean
Returns whether or not the engine is Presto.

isSafari (ua: string) → boolean
Returns whether or not the browser is Safari (desktop).

isTrident (ua: string) → boolean
Returns whether or not the engine is Trident.

isWebKit (ua: string) → boolean
Returns whether or not the engine is WebKit.

isWindows (ua: string) → boolean
Returns whether or not the operating system is Windows.

isWindowsPhone (ua: string) → boolean
Returns whether or not the operating system is Windows Phone.

parse (ua: string) → { ua: string, browser: { name: string, version: string, majorVersion: string }, engine: { name: string, version: string }, os: { name: string, version: string }
Returns all information obtained from the user agent string.

Module Formats

ES2015

import { isBrowserName } from 'bugz';

Unfortuantely tree shaking isn't particularly effective on Bugz because most exports are pure curried functions which aren't currently susceptible to dead code elimination. Therefore, a modular CommonJS build is additionally offered.

CommonJS

const bugz = require('bugz');

// Or modular for optimized builds
const isBrowserName = require('bugz/isBrowserName');
const isBrowserVersion = require('bugz/isBrowserVersion');

UMD

<script src="bugz.umd.js"></script>
<script>
    const isBrowserName = Bugz.isBrowserName;
</script>

require(['bugz'], bugz => {});

License

MIT

TODO

• [x] Move Ramda to peer dep.
• [x] Throw if UA is not passed in to parse as ua-parser-js fallsback to window.navigator.userAgent in a browser env.
• [x] Add helper functions for popular browsers.
• [x] Add helper functions for popular engines
• [x] Add helper functions for popular operating systems.
• [x] Document umd, cjs and esmodule builds.
• [x] Document API.
• [x] Provide more examples.
• [ ] Add integration tests to test composability.
• [x] Hook up to Travis and Coveralls.
• [x] Publish.
• [ ] Review whether Ramda indeed does need to be a peerdep, i.e. it doesn't matter that it uses the exact same instance as the host app.