Languages and frameworks guide

    Choose the right language and UI framework strategy for your extension surfaces, then use Extension.js defaults to keep setup minimal.

    Choose by goal

    GoalStart here
    Strong typing and safer refactorsTypeScript
    Rich UI components with large ecosystemReact
    Smaller React-like runtimePreact
    Vue single-file component workflowVue.js
    Modern module syntaxECMAScript modules
    Scoped styling by defaultCSS modules
    Sass or Less styling workflowsSass, LESS
    Browser-safe Node compatibility decisionsNode APIs in browser extensions
    Performance-heavy wasm workloadsWebAssembly

    Suggested progression

    1. Pick language/runtime (TypeScript, React, Vue, or Preact).
    2. Choose styling model (CSS modules, Sass, or LESS).
    3. Add build/runtime constraints (Node APIs, WebAssembly) only when needed.

    Next steps

    Video walkthrough