import { render } from "preact";
import { App } from "./App.js";

const root = document.getElementById("root");
if (root) {
  render(<App />, root);
}

// PWA installability — see sw.js's own top comment for
// what it does and does not cache. Feature-detected: older browsers
// without service-worker support just don't get the install affordance,
// nothing here depends on it existing.
if ("serviceWorker" in navigator) {
  window.addEventListener("load", () => {
    navigator.serviceWorker.register("/sw.js").catch((err: unknown) => {
      // Never surfaces to the operator — a failed SW registration means
      // "not installable this session," not "the app is broken."
      console.error("swarm-ui: service worker registration failed", err);
    });
  });
}