如何在路由变化时保持svelte存储状态？

npm install --save svelte-routing

<script>
  import { Route } from "svelte-routing";
  import { page } from "./stores";

  import Home from "./components/Home.svelte";
  import About from "./components/About.svelte";

  const routes = [
    {
      path: "/",
      component: Home
    },
    {
      path: "/about",
      component: About
    }
  ];
</script>

<main>
  <Route {routes} />
</main>

<script>
  import { page } from "../stores";

  page.set("home");
</script>

<h1>Home</h1>

<script>
  import { page } from "../stores";

  page.set("about");
</script>

<h1>About</h1>