Browser runtime

Resume owned behavior

The site package emits complete HTML. The optional client package compiles to WASM and resumes only the stateful boundary marked by the document. It does not hydrate or diff the entire page.

[client]
package = "my-app-client"
wasm_name = "my_app_client"
bindgen_output = "target/my-app-client/pkg"

External adapter contract

export default {
  version: 1,
  mount(context) {
    const instance = createLibrary(context.root, context.props);
    return {
      update(next) { instance.update(next); },
      unmount() { instance.destroy(); }
    };
  }
};

GSAP, Lenis, Three.js, WebGL, and other mature browser libraries remain native JavaScript. PliegoRS owns when they load, which capabilities admit them, and how they are cancelled and cleaned up.

Admission policy

trigger

load, visible, interaction, or explicit intent

capability tier

Device and renderer requirements checked before import

Save-Data

Can deny optional media or runtime work

reduced motion

Preserves content and actions while removing nonessential motion

Cleanup is automatic

Unmount, route replacement, policy changes, aborted imports, and failed updates cannot leave an adapter alive. Async cleanup completes before the next generation mounts.