@js-toolkit/web-utils

TypeScript utilities for the browser: media, WebSocket, WebRTC, fullscreen, platform detection, responsive helpers, events, DOM, service workers, and more.

Install

yarn add @js-toolkit/web-utils
# or
npm install @js-toolkit/web-utils

Import

Use subpath imports for tree-shaking:

import{FullscreenController}from'@js-toolkit/web-utils/FullscreenController';import{getRandomID}from'@js-toolkit/web-utils/getRandomID';import{isMobile}from'@js-toolkit/web-utils/platform/isMobile';

API Overview

Media and Video

Module	Description
media/TextTracksController	HTML5 video text tracks management
media/PipController	Picture-in-Picture controller
media/MediaStreamController	MediaStream attach/detach
media/Capabilities	Media type support detection
media/timeRanges	TimeRanges utilities
media/resetMedia	Reset media element and clear decoder buffer
media/getMediaSource	Get MediaSource or ManagedMediaSource
media/getSourceBuffer	Get SourceBuffer or ManagedSourceBuffer
media/parseCueText	WebVTT cue text parser

WebSocket and WebRTC

Module	Description
ws/WSController	WebSocket controller with auto-reconnect
webrtc/PeerConnection	RTCPeerConnection wrapper
webrtc/sdputils	SDP manipulation utilities

Fullscreen

Module	Description
FullscreenController	Fullscreen API controller with fallback
fullscreen	Cross-browser fullscreen utilities
fullscreenUtils	Pseudo-fullscreen helpers

Platform Detection

Module	Description
platform/getPlatformInfo	Browser/platform detection (ua-parser-js)
platform/isSafari, isChrome	Browser detection
platform/isIOS, isAndroid, isMacOS	OS detection
platform/isMobile	Mobile device detection
platform/isTouchSupported	Touch support detection
platform/isMSESupported	Media Source Extensions support
platform/isEMESupported	Encrypted Media Extensions support
platform/isAirPlayAvailable	AirPlay availability
platform/Semver	Semantic version parser

Responsive

Module	Description
responsive/MediaQueryListener	Media query change listener
responsive/MediaQuery	Static media query utilities
responsive/ViewSize	Viewport size enum and helpers

Events

Module	Description
EventEmitterListener	Unified listener for DOM/EventEmitter/EventTarget
EventListeners	Multi-target event listener manager
getEventAwaiter	Promise-based event waiting

DOM

Module	Description
onDOMReady	Execute callback when DOM is ready
onPageReady	Execute callback when page is loaded
getInnerRect	Element inner dimensions
toLocalPoint	Convert coordinates to local element space
loadScript	Dynamic script loading with deduplication
copyToClipboard	Copy text to clipboard

Files and Blobs

Module	Description
saveFileAs	Trigger file download
loadImage	Load image with caching
blobToDataUrl, dataUrlToBlob	Blob/DataURL conversions
toBase64, fromBase64	Unicode-safe base64 encoding
takeScreenshot	Capture screenshot from CanvasImageSource

Animation

Module	Description
createLoop	Interval-based loop with RAF throttling
createRafLoop	RequestAnimationFrame loop

Metrics

Module	Description
metrics/ga/*	Google Analytics helpers
metrics/yandex/*	Yandex Metrica helpers

Other

Module	Description
getRandomID	Random ID via crypto API
getBrowserLanguage	Browser language detection
WakeLockController	Screen wake lock
serviceWorker/ServiceWorkerInstaller	Service worker registration
iframe/*	Iframe parent-child communication
viewableTracker	Element visibility tracking

Usage Examples

FullscreenController

import{FullscreenController}from'@js-toolkit/web-utils/FullscreenController';constcontroller=newFullscreenController(document.getElementById('player')!);awaitcontroller.requestFullscreen();console.log(controller.isFullscreen);

Platform detection

import{isMobile}from'@js-toolkit/web-utils/platform/isMobile';import{isSafari}from'@js-toolkit/web-utils/platform/isSafari';if(isMobile()){// mobile-specific logic}if(isSafari()){// Safari workaround}

Event awaiter

import{getEventAwaiter}from'@js-toolkit/web-utils/getEventAwaiter';constvideo=document.querySelector('video')!;awaitgetEventAwaiter(video,'canplay').wait();video.play();

Dynamic script loading

import{loadScript}from'@js-toolkit/web-utils/loadScript';awaitloadScript('https://cdn.example.com/sdk.js');

Repository

https://github.com/js-toolkit/web-utils