Cannot access to values in store of Map in Svelte

I have simple store of new Map() and I like to iterate it in Svelte component. In the {#each} block i can see it iterates as many times as Map has elements but I can't see values.

<script>    import {items} from "./store.js"    $items.set("one", { name: "John", age: 50 })    $items.set("two", { name: "Jack", age: 25 })</script><h1>Hello!</h1>{#each $items as item}<div>name: {item.name}</div>{/each}

// store.jsimport {writable, get} from "svelte/store"export let items = writable(new Map())

Playground.