Browser Support

Browser Lifecycle uses capability detection instead of user-agent sniffing.

Capability helpers

import {
  detectBrowserLifecycleCapabilities,
  supportsVisibility,
  supportsFocus,
  supportsConnectivity,
  supportsBroadcastChannel,
  supportsPageLifecycle,
  supportsRequestIdleCallback,
  supportsAbortController,
} from "@jayoncode/browser-lifecycle";

const capabilities = detectBrowserLifecycleCapabilities();

Module requirements

Module	Primary APIs	Notes
Visibility	document.visibilityState, visibilitychange	Widely supported
Focus	window focus/blur	Widely supported
Connectivity	navigator.onLine, online/offline	Advisory only
Idle	user input events, timers	Configurable thresholds
Cross Tab	BroadcastChannel	Optional; degrades when unavailable

Disable modules when capabilities are missing rather than branching in application code.

Testing unsupported environments

Use detectBrowserLifecycleCapabilities() in unit tests and mock browser globals in jsdom when needed.

Related documentation

• SSR
• FAQ — Browser Support