webf-api-compatibility

SKILL.md

Note: WebF development is nearly identical to web development - you use the same tools (Vite, npm, Vitest), same frameworks (React, Vue, Svelte), and same deployment services (Vercel, Netlify). This skill covers one of the 3 key differences: checking API and CSS compatibility before implementation. The other two differences are async rendering and routing.

WebF is NOT a browser - it's a Flutter application runtime that implements W3C/WHATWG web standards. This means some browser APIs are not available, and some CSS features work differently.

This skill helps you quickly check what's supported and find alternatives for unsupported features.

Check Web API and CSS feature compatibility in WebF - determine what JavaScript APIs, DOM methods, CSS properties, and layout modes are supported. Use when planning features, debugging why APIs don't work, or finding alternatives for unsupported features like IndexedDB, WebGL, float layout, or CSS Grid. Source: openwebf/webf.

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