Browser Compatibility

Build Target

The SDK is compiled with ES2020 as the target (configured in tsconfig.json and Vite build settings).

Supported Browsers

Browser	Minimum Version
Chrome	80+
Firefox	80+
Safari	14+
Edge	80+
iOS Safari	14+
Chrome Android	80+

Required Web APIs

The SDK relies on these browser APIs:

API	Purpose	Support
Custom Elements v1	Web Component registration	All modern browsers
Shadow DOM v1	Style isolation	All modern browsers
fetch	API requests	All modern browsers
AbortController	Request cancellation/timeouts	All modern browsers
Optional chaining (?.)	ES2020 syntax	Chrome 80+, Safari 14+, Firefox 80+
Nullish coalescing (??)	ES2020 syntax	Chrome 80+, Safari 14+, Firefox 80+

No Polyfills Required

All required APIs are natively supported in the minimum browser versions listed above. No polyfills are needed.

WebView Environments

Environment	Status	Notes
Electron	Supported	Chromium-based — full compatibility
Capacitor / Cordova	Supported	WebView must support Custom Elements v1
React Native WebView	Partial	Standard Android/iOS WebViews work; older versions may not
In-app browsers	Varies	Social media in-app browsers have limited Web Component support

Known Limitations

• Internet Explorer: Not supported. IE does not implement Custom Elements or Shadow DOM.
• Safari < 14: Missing ES2020 features. Update to Safari 14+.
• Strict CSP environments: If style-src doesn’t allow inline styles, use the csp-nonce attribute. See CSP Guide.