Modules

Each browser Web API lives in its own module, published as a subpath export (e.g. @rtorcato/browser-common/clipboard). These pages are hand-written guides — a short description, a runnable example, and links to the underlying spec docs. For exact function signatures and types, see the generated API Reference.

The shared shape

Every module exposes an is<Name>Available() feature check. Most operations degrade gracefully when the API is missing (returning null / false / empty). A few that must return a live object (createBroadcastChannel, getDisplayMedia, createCredential, createURLPattern) or a dialog result (showAlert / showConfirm / showPrompt) throw a clear requires a browser environment error instead — guard those with the feature check first.

Importing any module is always SSR / Node-safe; nothing touches window at module load, so calls simply no-op or throw at call time, never at import.

Support at a glance

One row per module, for the main Web API it wraps. Baseline is the web-features status: Widely available (in every major browser for 30+ months), Newly available (in every major browser, recently), or Limited (missing from at least one). Each module page breaks this down per API, with notes on partial support.

Module	Baseline	Chrome	Edge	Firefox	Safari	iOS Safari
alert	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1+	✅ 1+
backgroundtasks	Limited	✅ 49+	✅ 79+	❌	❌	❌
battery	Limited	✅ 38+	✅ 79+	❌ removed in 52	❌	❌
broadcastchannel	Widely available	✅ 54+	✅ 79+	✅ 38+	✅ 15.4+	✅ 15.4+
canvas	Widely available	✅ 1+	✅ 12+	✅ 1.5+	✅ 2+	✅ 1+
clipboard	Widely available	✅ 66+	✅ 79+	✅ 63+	✅ 13.1+	✅ 13.4+
common	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1+	✅ 1+
cookies	Widely available	✅ 1+	✅ 12+	✅ 68+	✅ 4+	✅ 3.2+
dom	Widely available	✅ 1+	✅ 12+	✅ 3.5+	✅ 3.1+	✅ 2+
draganddrop	Widely available	✅ 3+	✅ 12+	✅ 3.5+	✅ 4+	✅ 3.2+
encodingapis	Widely available	✅ 38+	✅ 79+	✅ 18+	✅ 10.1+	✅ 10.3+
filesystem	Limited	✅ 86+	✅ 86+	❌	❌	❌
focus	Widely available	✅ 1+	✅ 12+	✅ 1.5+	✅ 3+	✅ 1+
forms	Widely available	✅ 5+	✅ 12+	✅ 4+	✅ 5+	✅ 5+
fullscreen	Limited	✅ 71+	✅ 79+	✅ 64+	✅ 16.4+	◐ partial 16.4+
geolocation	Widely available	✅ 5+	✅ 12+	✅ 3.5+	✅ 5+	✅ ≤3+
history	Widely available	✅ 5+	✅ 12+	✅ 4+	✅ 5+	✅ 4+
htmlmedia	Widely available	✅ 3+	✅ 12+	✅ 3.5+	✅ 3.1+	✅ 3+
idle	Limited	✅ 94+	✅ 114+	❌	❌	❌
iframe	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 3+	✅ 1+
intersection	Widely available	✅ 51+	✅ 15+	✅ 55+	✅ 12.1+	✅ 12.2+
keyboard	Widely available	✅ 51+	✅ 12+	✅ 23+	✅ 10.1+	✅ 10.3+
localstorage	Widely available	✅ 4+	✅ 12+	✅ 3.5+	✅ 4+	✅ 3.2+
location	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1+	✅ 1+
mediadevices	Widely available	✅ 53+	✅ 12+	✅ 36+	✅ 11+	✅ 11+
motion	Widely available	✅ 31+	✅ 12+	✅ 6+	✅ 17+	✅ 4.2+
mutationobserver	Widely available	✅ 26+	✅ 12+	✅ 14+	✅ 7+	✅ 7+
notifications	Limited	✅ 20+	✅ 14+	✅ 22+	✅ 7+	◐ partial 16.4+
orientation	Widely available	✅ 7+	✅ 12+	✅ 6+	✅ 17+	✅ 4.2+
performance	Widely available	✅ 28+	✅ 12+	✅ 38+	✅ 11+	✅ 11+
permissions	Widely available	✅ 43+	✅ 79+	✅ 46+	✅ 16+	✅ 16+
pointerevents	Widely available	✅ 55+	✅ 12+	✅ 59+	✅ 13+	✅ 13+
print	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1.1+	✅ 1+
resizeobserver	Widely available	✅ 64+	✅ 79+	✅ 69+	✅ 13.1+	✅ 13.4+
screen	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1+	✅ 1+
screencapture	Limited	✅ 72+	✅ 79+	✅ 66+	✅ 13+	❌
selectionapi	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1.3+	✅ 1+
serviceworkers	Widely available	✅ 40+	✅ 17+	✅ 44+	✅ 11.1+	✅ 11.3+
sessionstorage	Widely available	✅ 4+	✅ 12+	✅ 2+	✅ 4+	✅ 3.2+
touchevents	Limited	✅ 22+	✅ 79+	✅ 52+	❌	✅ 3.2+
urlpattern	Newly available	✅ 95+	✅ 95+	✅ 142+	✅ 26+	✅ 26+
vibrate	Limited	✅ 32+	✅ 79+	❌ removed in 129	❌	❌
viewtransitions	Newly available	✅ 111+	✅ 111+	✅ 144+	✅ 18+	✅ 18+
visualviewport	Widely available	✅ 61+	✅ 79+	✅ 91+	✅ 13+	✅ 13+
webanimations	Widely available	✅ 36+	✅ 79+	✅ 48+	✅ 13.1+	✅ 13.4+
webauthn	Widely available	✅ 67+	✅ 18+	✅ 60+	✅ 13+	✅ 13+
weblocks	Widely available	✅ 69+	✅ 79+	✅ 96+	✅ 15.4+	✅ 15.4+
webshare	Limited	✅ 128+	✅ 93+	❌ flag only	✅ 12.1+	✅ 12.2+
websockets	Widely available	✅ 5+	✅ 12+	✅ 11+	✅ 5+	✅ 4.2+
window	Widely available	✅ 1+	✅ 12+	✅ 1+	✅ 1+	✅ 1+

Reference links

Each module page links two external references:

• 📖 MDN — the developer-facing reference for the underlying Web API.
• 📊 caniuse — the live browser-support table for that API.

For the full support summary across all modules, see the Browser support guide.